/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.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:04:25,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:04:25,823 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:04:25,831 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:04:25,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:04:25,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:04:25,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:04:25,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:04:25,853 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:04:25,856 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:04:25,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:04:25,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:04:25,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:04:25,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:04:25,859 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:04:25,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:04:25,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:04:25,859 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:04:25,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:04:25,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:04:25,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:04:25,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:04:25,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:04:25,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:04:25,861 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:04:25,861 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:04:25,861 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:04:25,862 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:04:25,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:04:25,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:04:25,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:04:25,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:04:25,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:04:25,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:04:25,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:04:25,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:04:25,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:04:25,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:04:25,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:04:25,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:04:25,864 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:04:25,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:04:25,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:04:25,864 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:04:26,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:04:26,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:04:26,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:04:26,090 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:04:26,090 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:04:26,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2023-12-15 18:04:27,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:04:27,410 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:04:27,411 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2023-12-15 18:04:27,427 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b023be7/8816f4808b60454db504755b653d997b/FLAG76665458f [2023-12-15 18:04:27,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b023be7/8816f4808b60454db504755b653d997b [2023-12-15 18:04:27,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:04:27,441 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:04:27,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:04:27,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:04:27,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:04:27,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb23f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27, skipping insertion in model container [2023-12-15 18:04:27,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,483 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:04:27,600 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.06.cil-2.c[913,926] [2023-12-15 18:04:27,638 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.06.cil-2.c[5977,5990] [2023-12-15 18:04:27,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:04:27,715 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:04:27,724 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.06.cil-2.c[913,926] [2023-12-15 18:04:27,734 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[5977,5990] [2023-12-15 18:04:27,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:04:27,813 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:04:27,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27 WrapperNode [2023-12-15 18:04:27,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:04:27,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:04:27,814 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:04:27,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:04:27,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,861 INFO L138 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 723 [2023-12-15 18:04:27,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:04:27,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:04:27,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:04:27,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:04:27,875 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,891 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:04:27,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:04:27,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:04:27,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:04:27,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:04:27,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (1/1) ... [2023-12-15 18:04:27,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:04:27,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:27,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:04:27,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:04:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:04:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:04:27,998 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:04:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-15 18:04:27,998 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-15 18:04:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:04:27,998 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:04:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:04:27,998 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:04:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:04:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:04:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:04:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:04:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:04:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:04:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:04:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:04:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:04:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:04:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:04:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:04:28,000 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:04:28,081 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:04:28,083 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:04:28,577 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:04:28,678 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:04:28,679 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-15 18:04:28,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:04:28 BoogieIcfgContainer [2023-12-15 18:04:28,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:04:28,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:04:28,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:04:28,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:04:28,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:04:27" (1/3) ... [2023-12-15 18:04:28,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd023f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:04:28, skipping insertion in model container [2023-12-15 18:04:28,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:27" (2/3) ... [2023-12-15 18:04:28,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd023f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:04:28, skipping insertion in model container [2023-12-15 18:04:28,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:04:28" (3/3) ... [2023-12-15 18:04:28,688 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2023-12-15 18:04:28,700 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:04:28,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:04:28,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:04:28,760 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;@2182be27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:04:28,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:04:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 273 states, 235 states have (on average 1.6978723404255318) internal successors, (399), 240 states have internal predecessors, (399), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-15 18:04:28,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 18:04:28,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:28,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:28,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:28,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1695367655, now seen corresponding path program 1 times [2023-12-15 18:04:28,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:28,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796197968] [2023-12-15 18:04:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:28,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:29,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:29,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:29,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:29,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796197968] [2023-12-15 18:04:29,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796197968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:29,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:29,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:29,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660086587] [2023-12-15 18:04:29,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:29,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:29,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:29,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:29,098 INFO L87 Difference]: Start difference. First operand has 273 states, 235 states have (on average 1.6978723404255318) internal successors, (399), 240 states have internal predecessors, (399), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) 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) [2023-12-15 18:04:29,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:29,550 INFO L93 Difference]: Finished difference Result 593 states and 978 transitions. [2023-12-15 18:04:29,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:29,553 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 [2023-12-15 18:04:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:29,567 INFO L225 Difference]: With dead ends: 593 [2023-12-15 18:04:29,567 INFO L226 Difference]: Without dead ends: 331 [2023-12-15 18:04:29,574 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 [2023-12-15 18:04:29,576 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 544 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:29,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 499 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-15 18:04:29,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 325. [2023-12-15 18:04:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 282 states have (on average 1.5460992907801419) internal successors, (436), 286 states have internal predecessors, (436), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-12-15 18:04:29,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 500 transitions. [2023-12-15 18:04:29,647 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 500 transitions. Word has length 37 [2023-12-15 18:04:29,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:29,647 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 500 transitions. [2023-12-15 18:04:29,648 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) [2023-12-15 18:04:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 500 transitions. [2023-12-15 18:04:29,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 18:04:29,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:29,655 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] [2023-12-15 18:04:29,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:04:29,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:29,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1778259796, now seen corresponding path program 1 times [2023-12-15 18:04:29,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:29,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344550000] [2023-12-15 18:04:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:04:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:29,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:29,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344550000] [2023-12-15 18:04:29,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344550000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:29,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:29,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:29,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260551719] [2023-12-15 18:04:29,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:29,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:29,775 INFO L87 Difference]: Start difference. First operand 325 states and 500 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) [2023-12-15 18:04:30,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:30,088 INFO L93 Difference]: Finished difference Result 559 states and 844 transitions. [2023-12-15 18:04:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:30,088 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 [2023-12-15 18:04:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:30,093 INFO L225 Difference]: With dead ends: 559 [2023-12-15 18:04:30,093 INFO L226 Difference]: Without dead ends: 448 [2023-12-15 18:04:30,094 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 [2023-12-15 18:04:30,095 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 557 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:30,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 493 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:30,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-15 18:04:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 425. [2023-12-15 18:04:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 369 states have (on average 1.5013550135501355) internal successors, (554), 374 states have internal predecessors, (554), 38 states have call successors, (38), 15 states have call predecessors, (38), 16 states have return successors, (48), 36 states have call predecessors, (48), 36 states have call successors, (48) [2023-12-15 18:04:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 640 transitions. [2023-12-15 18:04:30,127 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 640 transitions. Word has length 38 [2023-12-15 18:04:30,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:30,128 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 640 transitions. [2023-12-15 18:04:30,128 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) [2023-12-15 18:04:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 640 transitions. [2023-12-15 18:04:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 18:04:30,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:30,129 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] [2023-12-15 18:04:30,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:04:30,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:30,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:30,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1372382596, now seen corresponding path program 1 times [2023-12-15 18:04:30,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:30,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757398218] [2023-12-15 18:04:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:30,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:04:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:30,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:30,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757398218] [2023-12-15 18:04:30,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757398218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:30,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:30,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:30,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907663026] [2023-12-15 18:04:30,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:30,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:30,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:30,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:30,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:30,203 INFO L87 Difference]: Start difference. First operand 425 states and 640 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) [2023-12-15 18:04:30,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:30,500 INFO L93 Difference]: Finished difference Result 845 states and 1221 transitions. [2023-12-15 18:04:30,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:30,500 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 [2023-12-15 18:04:30,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:30,503 INFO L225 Difference]: With dead ends: 845 [2023-12-15 18:04:30,503 INFO L226 Difference]: Without dead ends: 634 [2023-12-15 18:04:30,504 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 [2023-12-15 18:04:30,504 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 232 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:30,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 681 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-12-15 18:04:30,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 530. [2023-12-15 18:04:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 462 states have (on average 1.4783549783549783) internal successors, (683), 469 states have internal predecessors, (683), 44 states have call successors, (44), 21 states have call predecessors, (44), 22 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-12-15 18:04:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 781 transitions. [2023-12-15 18:04:30,533 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 781 transitions. Word has length 39 [2023-12-15 18:04:30,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:30,533 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 781 transitions. [2023-12-15 18:04:30,533 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) [2023-12-15 18:04:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 781 transitions. [2023-12-15 18:04:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 18:04:30,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:30,548 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] [2023-12-15 18:04:30,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:04:30,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:30,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:30,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1200848462, now seen corresponding path program 1 times [2023-12-15 18:04:30,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:30,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118170258] [2023-12-15 18:04:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:30,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-15 18:04:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:04:30,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:30,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118170258] [2023-12-15 18:04:30,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118170258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:30,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:30,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:30,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834765158] [2023-12-15 18:04:30,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:30,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:30,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:30,623 INFO L87 Difference]: Start difference. First operand 530 states and 781 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) [2023-12-15 18:04:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:30,917 INFO L93 Difference]: Finished difference Result 1046 states and 1498 transitions. [2023-12-15 18:04:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:30,918 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 [2023-12-15 18:04:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:30,921 INFO L225 Difference]: With dead ends: 1046 [2023-12-15 18:04:30,921 INFO L226 Difference]: Without dead ends: 730 [2023-12-15 18:04:30,921 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 [2023-12-15 18:04:30,922 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 217 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:30,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 725 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-15 18:04:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 696. [2023-12-15 18:04:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 604 states have (on average 1.4221854304635762) internal successors, (859), 613 states have internal predecessors, (859), 58 states have call successors, (58), 29 states have call predecessors, (58), 32 states have return successors, (78), 54 states have call predecessors, (78), 56 states have call successors, (78) [2023-12-15 18:04:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 995 transitions. [2023-12-15 18:04:30,946 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 995 transitions. Word has length 54 [2023-12-15 18:04:30,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:30,947 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 995 transitions. [2023-12-15 18:04:30,947 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) [2023-12-15 18:04:30,947 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 995 transitions. [2023-12-15 18:04:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:04:30,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:30,948 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] [2023-12-15 18:04:30,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:04:30,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:30,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:30,949 INFO L85 PathProgramCache]: Analyzing trace with hash 456550865, now seen corresponding path program 1 times [2023-12-15 18:04:30,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:30,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491487634] [2023-12-15 18:04:30,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:30,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:04:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:04:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:04:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:30,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491487634] [2023-12-15 18:04:30,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491487634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:30,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:30,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:30,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309476207] [2023-12-15 18:04:30,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:30,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:30,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:30,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:30,995 INFO L87 Difference]: Start difference. First operand 696 states and 995 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) [2023-12-15 18:04:31,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:31,230 INFO L93 Difference]: Finished difference Result 1275 states and 1774 transitions. [2023-12-15 18:04:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:31,230 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 [2023-12-15 18:04:31,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:31,234 INFO L225 Difference]: With dead ends: 1275 [2023-12-15 18:04:31,234 INFO L226 Difference]: Without dead ends: 873 [2023-12-15 18:04:31,235 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 [2023-12-15 18:04:31,235 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 543 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:31,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 505 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:04:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-12-15 18:04:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 824. [2023-12-15 18:04:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 716 states have (on average 1.388268156424581) internal successors, (994), 727 states have internal predecessors, (994), 66 states have call successors, (66), 35 states have call predecessors, (66), 40 states have return successors, (92), 62 states have call predecessors, (92), 64 states have call successors, (92) [2023-12-15 18:04:31,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1152 transitions. [2023-12-15 18:04:31,288 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1152 transitions. Word has length 59 [2023-12-15 18:04:31,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:31,289 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1152 transitions. [2023-12-15 18:04:31,289 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) [2023-12-15 18:04:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1152 transitions. [2023-12-15 18:04:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:04:31,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:31,290 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] [2023-12-15 18:04:31,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:04:31,291 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:31,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1103850820, now seen corresponding path program 1 times [2023-12-15 18:04:31,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:31,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829227390] [2023-12-15 18:04:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:31,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:31,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:31,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829227390] [2023-12-15 18:04:31,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829227390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:31,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:31,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:04:31,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787000625] [2023-12-15 18:04:31,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:31,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:04:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:04:31,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:31,354 INFO L87 Difference]: Start difference. First operand 824 states and 1152 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) [2023-12-15 18:04:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:31,724 INFO L93 Difference]: Finished difference Result 1310 states and 1814 transitions. [2023-12-15 18:04:31,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:31,724 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 [2023-12-15 18:04:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:31,727 INFO L225 Difference]: With dead ends: 1310 [2023-12-15 18:04:31,727 INFO L226 Difference]: Without dead ends: 772 [2023-12-15 18:04:31,728 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 [2023-12-15 18:04:31,729 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 169 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:31,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 879 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:31,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-12-15 18:04:31,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 699. [2023-12-15 18:04:31,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 608 states have (on average 1.393092105263158) internal successors, (847), 618 states have internal predecessors, (847), 56 states have call successors, (56), 29 states have call predecessors, (56), 33 states have return successors, (74), 52 states have call predecessors, (74), 54 states have call successors, (74) [2023-12-15 18:04:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 977 transitions. [2023-12-15 18:04:31,750 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 977 transitions. Word has length 60 [2023-12-15 18:04:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:31,751 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 977 transitions. [2023-12-15 18:04:31,751 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) [2023-12-15 18:04:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 977 transitions. [2023-12-15 18:04:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:04:31,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:31,752 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] [2023-12-15 18:04:31,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:04:31,753 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:31,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:31,753 INFO L85 PathProgramCache]: Analyzing trace with hash 693788796, now seen corresponding path program 1 times [2023-12-15 18:04:31,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:31,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4163493] [2023-12-15 18:04:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:31,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:04:31,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:31,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4163493] [2023-12-15 18:04:31,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4163493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:31,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839547163] [2023-12-15 18:04:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:31,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:31,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:31,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:04:31,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:04:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:04:32,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:32,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:04:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:32,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839547163] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:32,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 18:04:32,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-15 18:04:32,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241470361] [2023-12-15 18:04:32,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:32,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:32,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:32,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:32,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:32,096 INFO L87 Difference]: Start difference. First operand 699 states and 977 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) [2023-12-15 18:04:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:32,216 INFO L93 Difference]: Finished difference Result 748 states and 1038 transitions. [2023-12-15 18:04:32,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:04:32,217 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 [2023-12-15 18:04:32,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:32,220 INFO L225 Difference]: With dead ends: 748 [2023-12-15 18:04:32,221 INFO L226 Difference]: Without dead ends: 745 [2023-12-15 18:04:32,221 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 [2023-12-15 18:04:32,221 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 736 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:32,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 455 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:04:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2023-12-15 18:04:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 698. [2023-12-15 18:04:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 608 states have (on average 1.3898026315789473) internal successors, (845), 617 states have internal predecessors, (845), 55 states have call successors, (55), 29 states have call predecessors, (55), 33 states have return successors, (74), 52 states have call predecessors, (74), 54 states have call successors, (74) [2023-12-15 18:04:32,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 974 transitions. [2023-12-15 18:04:32,247 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 974 transitions. Word has length 60 [2023-12-15 18:04:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:32,248 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 974 transitions. [2023-12-15 18:04:32,248 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) [2023-12-15 18:04:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 974 transitions. [2023-12-15 18:04:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 18:04:32,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:32,250 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] [2023-12-15 18:04:32,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:32,456 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 [2023-12-15 18:04:32,456 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:32,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:32,458 INFO L85 PathProgramCache]: Analyzing trace with hash 31656564, now seen corresponding path program 1 times [2023-12-15 18:04:32,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:32,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88305301] [2023-12-15 18:04:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:04:32,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88305301] [2023-12-15 18:04:32,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88305301] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763970952] [2023-12-15 18:04:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:32,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:32,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:32,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:04:32,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:04:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:04:32,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:32,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:04:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763970952] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:04:32,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:04:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-15 18:04:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643681522] [2023-12-15 18:04:32,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:04:32,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:04:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:04:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:04:32,883 INFO L87 Difference]: Start difference. First operand 698 states and 974 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) [2023-12-15 18:04:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:33,688 INFO L93 Difference]: Finished difference Result 1934 states and 2626 transitions. [2023-12-15 18:04:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 18:04:33,688 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 [2023-12-15 18:04:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:33,693 INFO L225 Difference]: With dead ends: 1934 [2023-12-15 18:04:33,693 INFO L226 Difference]: Without dead ends: 1536 [2023-12-15 18:04:33,694 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 [2023-12-15 18:04:33,694 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 769 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:33,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1816 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:04:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2023-12-15 18:04:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1027. [2023-12-15 18:04:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 900 states have (on average 1.3544444444444443) internal successors, (1219), 916 states have internal predecessors, (1219), 74 states have call successors, (74), 42 states have call predecessors, (74), 51 states have return successors, (105), 69 states have call predecessors, (105), 73 states have call successors, (105) [2023-12-15 18:04:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1398 transitions. [2023-12-15 18:04:33,727 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1398 transitions. Word has length 61 [2023-12-15 18:04:33,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:33,728 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1398 transitions. [2023-12-15 18:04:33,728 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) [2023-12-15 18:04:33,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1398 transitions. [2023-12-15 18:04:33,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 18:04:33,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:33,729 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] [2023-12-15 18:04:33,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 18:04:33,935 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 [2023-12-15 18:04:33,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:33,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:33,935 INFO L85 PathProgramCache]: Analyzing trace with hash 447226569, now seen corresponding path program 1 times [2023-12-15 18:04:33,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:33,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516780516] [2023-12-15 18:04:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:33,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:33,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 18:04:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 18:04:33,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:33,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516780516] [2023-12-15 18:04:33,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516780516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:33,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:33,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:33,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460091532] [2023-12-15 18:04:33,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:33,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:33,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:33,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:33,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:33,976 INFO L87 Difference]: Start difference. First operand 1027 states and 1398 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) [2023-12-15 18:04:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:34,239 INFO L93 Difference]: Finished difference Result 1661 states and 2221 transitions. [2023-12-15 18:04:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:34,240 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 [2023-12-15 18:04:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:34,242 INFO L225 Difference]: With dead ends: 1661 [2023-12-15 18:04:34,243 INFO L226 Difference]: Without dead ends: 996 [2023-12-15 18:04:34,243 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 [2023-12-15 18:04:34,244 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 556 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:34,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 521 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:04:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2023-12-15 18:04:34,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 919. [2023-12-15 18:04:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 805 states have (on average 1.35527950310559) internal successors, (1091), 821 states have internal predecessors, (1091), 67 states have call successors, (67), 37 states have call predecessors, (67), 45 states have return successors, (94), 61 states have call predecessors, (94), 66 states have call successors, (94) [2023-12-15 18:04:34,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1252 transitions. [2023-12-15 18:04:34,269 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1252 transitions. Word has length 78 [2023-12-15 18:04:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:34,269 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1252 transitions. [2023-12-15 18:04:34,269 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) [2023-12-15 18:04:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1252 transitions. [2023-12-15 18:04:34,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 18:04:34,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:34,271 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] [2023-12-15 18:04:34,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:04:34,271 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:34,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:34,272 INFO L85 PathProgramCache]: Analyzing trace with hash 48056276, now seen corresponding path program 1 times [2023-12-15 18:04:34,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:34,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987708910] [2023-12-15 18:04:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:34,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-15 18:04:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 18:04:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 18:04:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 18:04:34,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:34,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987708910] [2023-12-15 18:04:34,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987708910] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:34,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808210399] [2023-12-15 18:04:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:34,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:34,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:34,345 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) [2023-12-15 18:04:34,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:04:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:04:34,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:04:34,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:34,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808210399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:34,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:34,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 18:04:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490531853] [2023-12-15 18:04:34,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:34,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:34,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:34,457 INFO L87 Difference]: Start difference. First operand 919 states and 1252 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) [2023-12-15 18:04:34,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:34,512 INFO L93 Difference]: Finished difference Result 1204 states and 1610 transitions. [2023-12-15 18:04:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:34,513 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 [2023-12-15 18:04:34,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:34,513 INFO L225 Difference]: With dead ends: 1204 [2023-12-15 18:04:34,514 INFO L226 Difference]: Without dead ends: 209 [2023-12-15 18:04:34,515 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 [2023-12-15 18:04:34,515 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 55 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:34,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 776 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-15 18:04:34,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-12-15 18:04:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 182 states have (on average 1.598901098901099) internal successors, (291), 183 states have internal predecessors, (291), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 18:04:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 331 transitions. [2023-12-15 18:04:34,522 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 331 transitions. Word has length 92 [2023-12-15 18:04:34,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:34,522 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 331 transitions. [2023-12-15 18:04:34,522 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) [2023-12-15 18:04:34,522 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 331 transitions. [2023-12-15 18:04:34,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:34,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:34,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:34,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:34,728 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 [2023-12-15 18:04:34,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:34,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash -9347914, now seen corresponding path program 1 times [2023-12-15 18:04:34,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:34,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755430434] [2023-12-15 18:04:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:34,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:34,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755430434] [2023-12-15 18:04:34,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755430434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:34,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:34,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:04:34,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644890573] [2023-12-15 18:04:34,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:34,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:04:34,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:34,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:04:34,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:34,806 INFO L87 Difference]: Start difference. First operand 209 states and 331 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:35,499 INFO L93 Difference]: Finished difference Result 480 states and 774 transitions. [2023-12-15 18:04:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 18:04:35,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-15 18:04:35,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:35,501 INFO L225 Difference]: With dead ends: 480 [2023-12-15 18:04:35,501 INFO L226 Difference]: Without dead ends: 279 [2023-12-15 18:04:35,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:04:35,502 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 552 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:35,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 376 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:04:35,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-15 18:04:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 209. [2023-12-15 18:04:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 182 states have (on average 1.5934065934065933) internal successors, (290), 183 states have internal predecessors, (290), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 18:04:35,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 330 transitions. [2023-12-15 18:04:35,514 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 330 transitions. Word has length 101 [2023-12-15 18:04:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:35,514 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 330 transitions. [2023-12-15 18:04:35,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 330 transitions. [2023-12-15 18:04:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:35,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:35,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:35,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:04:35,516 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:35,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:35,516 INFO L85 PathProgramCache]: Analyzing trace with hash 19152376, now seen corresponding path program 1 times [2023-12-15 18:04:35,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:35,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102982506] [2023-12-15 18:04:35,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:35,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:35,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:35,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102982506] [2023-12-15 18:04:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102982506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:35,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:35,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:04:35,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144519494] [2023-12-15 18:04:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:35,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:04:35,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:04:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:35,639 INFO L87 Difference]: Start difference. First operand 209 states and 330 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-12-15 18:04:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:36,855 INFO L93 Difference]: Finished difference Result 748 states and 1212 transitions. [2023-12-15 18:04:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:04:36,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:36,858 INFO L225 Difference]: With dead ends: 748 [2023-12-15 18:04:36,858 INFO L226 Difference]: Without dead ends: 552 [2023-12-15 18:04:36,859 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 [2023-12-15 18:04:36,859 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 823 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:36,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 631 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:04:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-15 18:04:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 413. [2023-12-15 18:04:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 364 states have (on average 1.6043956043956045) internal successors, (584), 366 states have internal predecessors, (584), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2023-12-15 18:04:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 657 transitions. [2023-12-15 18:04:36,878 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 657 transitions. Word has length 101 [2023-12-15 18:04:36,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:36,878 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 657 transitions. [2023-12-15 18:04:36,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-12-15 18:04:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 657 transitions. [2023-12-15 18:04:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:36,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:36,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:36,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:04:36,880 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:36,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:36,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1939422410, now seen corresponding path program 1 times [2023-12-15 18:04:36,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:36,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757769507] [2023-12-15 18:04:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:36,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:37,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:37,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757769507] [2023-12-15 18:04:37,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757769507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:37,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:37,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:37,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718669021] [2023-12-15 18:04:37,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:37,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:37,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:37,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:37,057 INFO L87 Difference]: Start difference. First operand 413 states and 657 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:38,629 INFO L93 Difference]: Finished difference Result 1233 states and 1994 transitions. [2023-12-15 18:04:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:04:38,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:38,633 INFO L225 Difference]: With dead ends: 1233 [2023-12-15 18:04:38,633 INFO L226 Difference]: Without dead ends: 833 [2023-12-15 18:04:38,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:04:38,634 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 844 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:38,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1186 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:04:38,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-12-15 18:04:38,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 602. [2023-12-15 18:04:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 531 states have (on average 1.5969868173258004) internal successors, (848), 534 states have internal predecessors, (848), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-12-15 18:04:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 953 transitions. [2023-12-15 18:04:38,673 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 953 transitions. Word has length 101 [2023-12-15 18:04:38,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:38,673 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 953 transitions. [2023-12-15 18:04:38,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 953 transitions. [2023-12-15 18:04:38,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:38,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:38,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:38,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:04:38,674 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:38,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:38,675 INFO L85 PathProgramCache]: Analyzing trace with hash -62939592, now seen corresponding path program 1 times [2023-12-15 18:04:38,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:38,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361994433] [2023-12-15 18:04:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:38,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361994433] [2023-12-15 18:04:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361994433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:38,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:38,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:38,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453149977] [2023-12-15 18:04:38,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:38,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:38,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:38,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:38,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:38,810 INFO L87 Difference]: Start difference. First operand 602 states and 953 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:39,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:39,600 INFO L93 Difference]: Finished difference Result 1428 states and 2308 transitions. [2023-12-15 18:04:39,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:39,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:39,604 INFO L225 Difference]: With dead ends: 1428 [2023-12-15 18:04:39,604 INFO L226 Difference]: Without dead ends: 839 [2023-12-15 18:04:39,606 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 [2023-12-15 18:04:39,606 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 613 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:39,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 602 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:04:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-12-15 18:04:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 602. [2023-12-15 18:04:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 531 states have (on average 1.591337099811676) internal successors, (845), 534 states have internal predecessors, (845), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-12-15 18:04:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 950 transitions. [2023-12-15 18:04:39,632 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 950 transitions. Word has length 101 [2023-12-15 18:04:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:39,632 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 950 transitions. [2023-12-15 18:04:39,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 950 transitions. [2023-12-15 18:04:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:39,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:39,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:39,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:04:39,633 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:39,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1261916602, now seen corresponding path program 1 times [2023-12-15 18:04:39,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:39,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748052268] [2023-12-15 18:04:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:39,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:39,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:39,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748052268] [2023-12-15 18:04:39,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748052268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:39,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:39,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:39,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707101128] [2023-12-15 18:04:39,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:39,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:39,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:39,743 INFO L87 Difference]: Start difference. First operand 602 states and 950 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:40,461 INFO L93 Difference]: Finished difference Result 1424 states and 2291 transitions. [2023-12-15 18:04:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:40,467 INFO L225 Difference]: With dead ends: 1424 [2023-12-15 18:04:40,467 INFO L226 Difference]: Without dead ends: 835 [2023-12-15 18:04:40,470 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 [2023-12-15 18:04:40,471 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 697 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:40,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 505 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:04:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-12-15 18:04:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 602. [2023-12-15 18:04:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 531 states have (on average 1.5856873822975517) internal successors, (842), 534 states have internal predecessors, (842), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-12-15 18:04:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 947 transitions. [2023-12-15 18:04:40,502 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 947 transitions. Word has length 101 [2023-12-15 18:04:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:40,502 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 947 transitions. [2023-12-15 18:04:40,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 947 transitions. [2023-12-15 18:04:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:40,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:40,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:40,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:04:40,503 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:40,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:40,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1466292744, now seen corresponding path program 1 times [2023-12-15 18:04:40,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:40,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482091598] [2023-12-15 18:04:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:40,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:40,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:40,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482091598] [2023-12-15 18:04:40,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482091598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:40,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:40,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:40,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988301271] [2023-12-15 18:04:40,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:40,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:40,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:40,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:40,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:40,626 INFO L87 Difference]: Start difference. First operand 602 states and 947 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:41,317 INFO L93 Difference]: Finished difference Result 1420 states and 2274 transitions. [2023-12-15 18:04:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:41,321 INFO L225 Difference]: With dead ends: 1420 [2023-12-15 18:04:41,321 INFO L226 Difference]: Without dead ends: 831 [2023-12-15 18:04:41,322 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 [2023-12-15 18:04:41,323 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 695 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:41,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 505 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:04:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2023-12-15 18:04:41,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 602. [2023-12-15 18:04:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 531 states have (on average 1.5800376647834276) internal successors, (839), 534 states have internal predecessors, (839), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-12-15 18:04:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 944 transitions. [2023-12-15 18:04:41,383 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 944 transitions. Word has length 101 [2023-12-15 18:04:41,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:41,384 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 944 transitions. [2023-12-15 18:04:41,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:41,384 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 944 transitions. [2023-12-15 18:04:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:41,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:41,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:41,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:04:41,385 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:41,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1770836474, now seen corresponding path program 1 times [2023-12-15 18:04:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:41,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590190375] [2023-12-15 18:04:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:41,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:41,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590190375] [2023-12-15 18:04:41,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590190375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:41,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:41,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:41,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937529068] [2023-12-15 18:04:41,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:41,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:41,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:41,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:41,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:41,521 INFO L87 Difference]: Start difference. First operand 602 states and 944 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:43,066 INFO L93 Difference]: Finished difference Result 1930 states and 3068 transitions. [2023-12-15 18:04:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:04:43,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:43,071 INFO L225 Difference]: With dead ends: 1930 [2023-12-15 18:04:43,071 INFO L226 Difference]: Without dead ends: 1341 [2023-12-15 18:04:43,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:04:43,073 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 817 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:43,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1184 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:04:43,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2023-12-15 18:04:43,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 993. [2023-12-15 18:04:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 878 states have (on average 1.571753986332574) internal successors, (1380), 883 states have internal predecessors, (1380), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-15 18:04:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1553 transitions. [2023-12-15 18:04:43,168 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1553 transitions. Word has length 101 [2023-12-15 18:04:43,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:43,169 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1553 transitions. [2023-12-15 18:04:43,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1553 transitions. [2023-12-15 18:04:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:43,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:43,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:04:43,170 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:43,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash 628334008, now seen corresponding path program 1 times [2023-12-15 18:04:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:43,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392790578] [2023-12-15 18:04:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:43,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:43,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392790578] [2023-12-15 18:04:43,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392790578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:43,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:43,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:43,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329857102] [2023-12-15 18:04:43,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:43,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:43,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:43,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:43,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:43,287 INFO L87 Difference]: Start difference. First operand 993 states and 1553 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:45,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:45,085 INFO L93 Difference]: Finished difference Result 3621 states and 5739 transitions. [2023-12-15 18:04:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:45,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:45,109 INFO L225 Difference]: With dead ends: 3621 [2023-12-15 18:04:45,109 INFO L226 Difference]: Without dead ends: 2641 [2023-12-15 18:04:45,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:04:45,112 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 872 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:45,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1177 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:04:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2023-12-15 18:04:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 1762. [2023-12-15 18:04:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1563 states have (on average 1.564939219449776) internal successors, (2446), 1572 states have internal predecessors, (2446), 136 states have call successors, (136), 54 states have call predecessors, (136), 62 states have return successors, (171), 143 states have call predecessors, (171), 136 states have call successors, (171) [2023-12-15 18:04:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2753 transitions. [2023-12-15 18:04:45,196 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2753 transitions. Word has length 101 [2023-12-15 18:04:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:45,196 INFO L495 AbstractCegarLoop]: Abstraction has 1762 states and 2753 transitions. [2023-12-15 18:04:45,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2753 transitions. [2023-12-15 18:04:45,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:45,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:45,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:45,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:04:45,198 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:45,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:45,199 INFO L85 PathProgramCache]: Analyzing trace with hash 868573754, now seen corresponding path program 1 times [2023-12-15 18:04:45,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:45,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251327911] [2023-12-15 18:04:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:45,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:45,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:45,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251327911] [2023-12-15 18:04:45,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251327911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:45,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:45,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:45,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695006707] [2023-12-15 18:04:45,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:45,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:45,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:45,317 INFO L87 Difference]: Start difference. First operand 1762 states and 2753 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:46,644 INFO L93 Difference]: Finished difference Result 6564 states and 10393 transitions. [2023-12-15 18:04:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:46,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:46,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:46,663 INFO L225 Difference]: With dead ends: 6564 [2023-12-15 18:04:46,664 INFO L226 Difference]: Without dead ends: 4815 [2023-12-15 18:04:46,670 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 [2023-12-15 18:04:46,670 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1051 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:46,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 820 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:04:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4815 states. [2023-12-15 18:04:46,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4815 to 3259. [2023-12-15 18:04:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 2896 states have (on average 1.5607734806629834) internal successors, (4520), 2913 states have internal predecessors, (4520), 244 states have call successors, (244), 102 states have call predecessors, (244), 118 states have return successors, (341), 259 states have call predecessors, (341), 244 states have call successors, (341) [2023-12-15 18:04:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 5105 transitions. [2023-12-15 18:04:46,869 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 5105 transitions. Word has length 101 [2023-12-15 18:04:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:46,869 INFO L495 AbstractCegarLoop]: Abstraction has 3259 states and 5105 transitions. [2023-12-15 18:04:46,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:46,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 5105 transitions. [2023-12-15 18:04:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:46,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:46,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:46,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:04:46,872 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:46,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:46,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1707607416, now seen corresponding path program 1 times [2023-12-15 18:04:46,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:46,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818509814] [2023-12-15 18:04:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:46,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:46,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:46,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818509814] [2023-12-15 18:04:46,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818509814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:46,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:46,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:46,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234444764] [2023-12-15 18:04:46,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:46,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:46,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:46,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:46,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:46,977 INFO L87 Difference]: Start difference. First operand 3259 states and 5105 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:47,649 INFO L93 Difference]: Finished difference Result 7468 states and 11865 transitions. [2023-12-15 18:04:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:47,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:47,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:47,677 INFO L225 Difference]: With dead ends: 7468 [2023-12-15 18:04:47,677 INFO L226 Difference]: Without dead ends: 4222 [2023-12-15 18:04:47,687 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 [2023-12-15 18:04:47,687 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 700 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:47,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 504 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:04:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4222 states. [2023-12-15 18:04:47,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4222 to 3259. [2023-12-15 18:04:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 2896 states have (on average 1.554903314917127) internal successors, (4503), 2913 states have internal predecessors, (4503), 244 states have call successors, (244), 102 states have call predecessors, (244), 118 states have return successors, (341), 259 states have call predecessors, (341), 244 states have call successors, (341) [2023-12-15 18:04:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 5088 transitions. [2023-12-15 18:04:47,898 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 5088 transitions. Word has length 101 [2023-12-15 18:04:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:47,899 INFO L495 AbstractCegarLoop]: Abstraction has 3259 states and 5088 transitions. [2023-12-15 18:04:47,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 5088 transitions. [2023-12-15 18:04:47,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:47,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:47,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:47,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:04:47,901 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:47,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1734673018, now seen corresponding path program 1 times [2023-12-15 18:04:47,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:47,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688355645] [2023-12-15 18:04:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:47,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:47,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:47,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:48,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:48,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688355645] [2023-12-15 18:04:48,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688355645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:48,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:48,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:48,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351417837] [2023-12-15 18:04:48,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:48,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:48,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:48,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:48,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:48,011 INFO L87 Difference]: Start difference. First operand 3259 states and 5088 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:49,626 INFO L93 Difference]: Finished difference Result 11799 states and 18643 transitions. [2023-12-15 18:04:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:49,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:49,662 INFO L225 Difference]: With dead ends: 11799 [2023-12-15 18:04:49,662 INFO L226 Difference]: Without dead ends: 8553 [2023-12-15 18:04:49,673 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 [2023-12-15 18:04:49,674 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 893 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:49,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1177 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1905 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:04:49,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8553 states. [2023-12-15 18:04:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8553 to 6326. [2023-12-15 18:04:50,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6326 states, 5643 states have (on average 1.553251816409711) internal successors, (8765), 5676 states have internal predecessors, (8765), 452 states have call successors, (452), 198 states have call predecessors, (452), 230 states have return successors, (727), 483 states have call predecessors, (727), 452 states have call successors, (727) [2023-12-15 18:04:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6326 states to 6326 states and 9944 transitions. [2023-12-15 18:04:50,039 INFO L78 Accepts]: Start accepts. Automaton has 6326 states and 9944 transitions. Word has length 101 [2023-12-15 18:04:50,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:50,039 INFO L495 AbstractCegarLoop]: Abstraction has 6326 states and 9944 transitions. [2023-12-15 18:04:50,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:50,040 INFO L276 IsEmpty]: Start isEmpty. Operand 6326 states and 9944 transitions. [2023-12-15 18:04:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:50,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:50,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:50,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:04:50,044 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:50,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash -826189828, now seen corresponding path program 1 times [2023-12-15 18:04:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:50,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689667973] [2023-12-15 18:04:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:50,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:50,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689667973] [2023-12-15 18:04:50,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689667973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:50,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:50,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:50,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139453650] [2023-12-15 18:04:50,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:50,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:50,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:50,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:50,149 INFO L87 Difference]: Start difference. First operand 6326 states and 9944 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:51,093 INFO L93 Difference]: Finished difference Result 14300 states and 22764 transitions. [2023-12-15 18:04:51,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:51,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:51,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:51,116 INFO L225 Difference]: With dead ends: 14300 [2023-12-15 18:04:51,116 INFO L226 Difference]: Without dead ends: 7987 [2023-12-15 18:04:51,129 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 [2023-12-15 18:04:51,130 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 697 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:51,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 504 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:04:51,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7987 states. [2023-12-15 18:04:51,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7987 to 6326. [2023-12-15 18:04:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6326 states, 5643 states have (on average 1.547403863193337) internal successors, (8732), 5676 states have internal predecessors, (8732), 452 states have call successors, (452), 198 states have call predecessors, (452), 230 states have return successors, (727), 483 states have call predecessors, (727), 452 states have call successors, (727) [2023-12-15 18:04:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6326 states to 6326 states and 9911 transitions. [2023-12-15 18:04:51,493 INFO L78 Accepts]: Start accepts. Automaton has 6326 states and 9911 transitions. Word has length 101 [2023-12-15 18:04:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:51,493 INFO L495 AbstractCegarLoop]: Abstraction has 6326 states and 9911 transitions. [2023-12-15 18:04:51,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 6326 states and 9911 transitions. [2023-12-15 18:04:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:51,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:51,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:51,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:04:51,498 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:51,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash 61033018, now seen corresponding path program 1 times [2023-12-15 18:04:51,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:51,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512406756] [2023-12-15 18:04:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:51,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:51,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512406756] [2023-12-15 18:04:51,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512406756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:51,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:51,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:51,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852671672] [2023-12-15 18:04:51,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:51,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:51,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:51,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:51,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:51,603 INFO L87 Difference]: Start difference. First operand 6326 states and 9911 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:53,750 INFO L93 Difference]: Finished difference Result 22174 states and 35109 transitions. [2023-12-15 18:04:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:53,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:53,850 INFO L225 Difference]: With dead ends: 22174 [2023-12-15 18:04:53,850 INFO L226 Difference]: Without dead ends: 15861 [2023-12-15 18:04:53,877 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 [2023-12-15 18:04:53,878 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 812 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:53,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1177 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:04:53,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15861 states. [2023-12-15 18:04:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15861 to 12488. [2023-12-15 18:04:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12488 states, 11181 states have (on average 1.5454789374832305) internal successors, (17280), 11246 states have internal predecessors, (17280), 852 states have call successors, (852), 390 states have call predecessors, (852), 454 states have return successors, (1645), 915 states have call predecessors, (1645), 852 states have call successors, (1645) [2023-12-15 18:04:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12488 states to 12488 states and 19777 transitions. [2023-12-15 18:04:54,567 INFO L78 Accepts]: Start accepts. Automaton has 12488 states and 19777 transitions. Word has length 101 [2023-12-15 18:04:54,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:54,567 INFO L495 AbstractCegarLoop]: Abstraction has 12488 states and 19777 transitions. [2023-12-15 18:04:54,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 12488 states and 19777 transitions. [2023-12-15 18:04:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:54,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:54,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:54,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:04:54,575 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:54,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:54,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1850009540, now seen corresponding path program 1 times [2023-12-15 18:04:54,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:54,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785312539] [2023-12-15 18:04:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:54,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:54,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:54,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785312539] [2023-12-15 18:04:54,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785312539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:54,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:54,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:04:54,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188787877] [2023-12-15 18:04:54,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:54,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:04:54,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:54,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:04:54,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:54,697 INFO L87 Difference]: Start difference. First operand 12488 states and 19777 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-12-15 18:04:56,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:56,126 INFO L93 Difference]: Finished difference Result 30075 states and 47821 transitions. [2023-12-15 18:04:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 18:04:56,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-15 18:04:56,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:56,186 INFO L225 Difference]: With dead ends: 30075 [2023-12-15 18:04:56,186 INFO L226 Difference]: Without dead ends: 17601 [2023-12-15 18:04:56,219 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 [2023-12-15 18:04:56,220 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 374 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:56,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 678 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:04:56,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17601 states. [2023-12-15 18:04:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17601 to 12618. [2023-12-15 18:04:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12618 states, 11311 states have (on average 1.5392096189549995) internal successors, (17410), 11376 states have internal predecessors, (17410), 852 states have call successors, (852), 390 states have call predecessors, (852), 454 states have return successors, (1645), 915 states have call predecessors, (1645), 852 states have call successors, (1645) [2023-12-15 18:04:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 19907 transitions. [2023-12-15 18:04:56,859 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 19907 transitions. Word has length 101 [2023-12-15 18:04:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:56,859 INFO L495 AbstractCegarLoop]: Abstraction has 12618 states and 19907 transitions. [2023-12-15 18:04:56,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-12-15 18:04:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 19907 transitions. [2023-12-15 18:04:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:04:56,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:56,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:56,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:04:56,868 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:56,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:56,868 INFO L85 PathProgramCache]: Analyzing trace with hash 758777918, now seen corresponding path program 1 times [2023-12-15 18:04:56,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971824411] [2023-12-15 18:04:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:57,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:57,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971824411] [2023-12-15 18:04:57,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971824411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:57,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:57,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:57,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316323937] [2023-12-15 18:04:57,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:57,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:57,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:57,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:57,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:57,003 INFO L87 Difference]: Start difference. First operand 12618 states and 19907 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:05:00,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:00,550 INFO L93 Difference]: Finished difference Result 57637 states and 92903 transitions. [2023-12-15 18:05:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 18:05:00,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-12-15 18:05:00,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:00,693 INFO L225 Difference]: With dead ends: 57637 [2023-12-15 18:05:00,693 INFO L226 Difference]: Without dead ends: 45033 [2023-12-15 18:05:00,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-15 18:05:00,728 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 2180 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:00,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2201 Valid, 1009 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:05:00,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45033 states. [2023-12-15 18:05:02,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45033 to 36903. [2023-12-15 18:05:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36903 states, 33036 states have (on average 1.5309662186705413) internal successors, (50577), 33328 states have internal predecessors, (50577), 2498 states have call successors, (2498), 1176 states have call predecessors, (2498), 1368 states have return successors, (5226), 2462 states have call predecessors, (5226), 2498 states have call successors, (5226) [2023-12-15 18:05:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36903 states to 36903 states and 58301 transitions. [2023-12-15 18:05:02,866 INFO L78 Accepts]: Start accepts. Automaton has 36903 states and 58301 transitions. Word has length 101 [2023-12-15 18:05:02,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:02,866 INFO L495 AbstractCegarLoop]: Abstraction has 36903 states and 58301 transitions. [2023-12-15 18:05:02,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:05:02,867 INFO L276 IsEmpty]: Start isEmpty. Operand 36903 states and 58301 transitions. [2023-12-15 18:05:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-15 18:05:03,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:03,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:03,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:05:03,016 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:03,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:03,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2053074634, now seen corresponding path program 1 times [2023-12-15 18:05:03,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:03,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894375800] [2023-12-15 18:05:03,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:03,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:03,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:05:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:05:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:05:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:05:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-15 18:05:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:05:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:03,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-15 18:05:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-15 18:05:03,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:03,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894375800] [2023-12-15 18:05:03,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894375800] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:03,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645695436] [2023-12-15 18:05:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:03,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:03,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:03,128 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) [2023-12-15 18:05:03,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 18:05:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:03,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:05:03,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:05:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 18:05:03,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:05:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645695436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:05:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:05:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586516667] [2023-12-15 18:05:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:03,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:05:03,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:03,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:05:03,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:03,406 INFO L87 Difference]: Start difference. First operand 36903 states and 58301 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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) [2023-12-15 18:05:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:06,511 INFO L93 Difference]: Finished difference Result 109896 states and 175258 transitions. [2023-12-15 18:05:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:05:06,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 163 [2023-12-15 18:05:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:06,762 INFO L225 Difference]: With dead ends: 109896 [2023-12-15 18:05:06,762 INFO L226 Difference]: Without dead ends: 73007 [2023-12-15 18:05:06,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:06,829 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 273 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:06,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 566 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:05:06,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73007 states. [2023-12-15 18:05:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73007 to 72809. [2023-12-15 18:05:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72809 states, 65276 states have (on average 1.5283411973772902) internal successors, (99764), 65859 states have internal predecessors, (99764), 4796 states have call successors, (4796), 2352 states have call predecessors, (4796), 2736 states have return successors, (10090), 4661 states have call predecessors, (10090), 4796 states have call successors, (10090) [2023-12-15 18:05:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72809 states to 72809 states and 114650 transitions. [2023-12-15 18:05:10,809 INFO L78 Accepts]: Start accepts. Automaton has 72809 states and 114650 transitions. Word has length 163 [2023-12-15 18:05:10,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:10,809 INFO L495 AbstractCegarLoop]: Abstraction has 72809 states and 114650 transitions. [2023-12-15 18:05:10,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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) [2023-12-15 18:05:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 72809 states and 114650 transitions. [2023-12-15 18:05:11,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-15 18:05:11,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:11,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:11,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 18:05:11,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 18:05:11,216 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:11,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:11,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1087237674, now seen corresponding path program 1 times [2023-12-15 18:05:11,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:11,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246628917] [2023-12-15 18:05:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:11,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:05:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:05:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:05:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:05:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-15 18:05:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:05:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-15 18:05:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-15 18:05:11,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:11,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246628917] [2023-12-15 18:05:11,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246628917] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:11,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096587048] [2023-12-15 18:05:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:11,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:11,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:11,409 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) [2023-12-15 18:05:11,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 18:05:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:05:11,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:05:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 18:05:11,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:05:11,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096587048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:11,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:05:11,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:05:11,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354782041] [2023-12-15 18:05:11,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:11,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:05:11,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:05:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:11,593 INFO L87 Difference]: Start difference. First operand 72809 states and 114650 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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) [2023-12-15 18:05:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:18,249 INFO L93 Difference]: Finished difference Result 217214 states and 345435 transitions. [2023-12-15 18:05:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:05:18,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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 163 [2023-12-15 18:05:18,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:18,921 INFO L225 Difference]: With dead ends: 217214 [2023-12-15 18:05:18,922 INFO L226 Difference]: Without dead ends: 144419 [2023-12-15 18:05:19,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:19,065 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 253 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:19,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 566 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:05:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144419 states. [2023-12-15 18:05:25,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144419 to 144025. [2023-12-15 18:05:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144025 states, 129164 states have (on average 1.5248676101700165) internal successors, (196958), 130329 states have internal predecessors, (196958), 9388 states have call successors, (9388), 4704 states have call predecessors, (9388), 5472 states have return successors, (19811), 9055 states have call predecessors, (19811), 9388 states have call successors, (19811) [2023-12-15 18:05:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144025 states to 144025 states and 226157 transitions. [2023-12-15 18:05:26,687 INFO L78 Accepts]: Start accepts. Automaton has 144025 states and 226157 transitions. Word has length 163 [2023-12-15 18:05:26,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:26,687 INFO L495 AbstractCegarLoop]: Abstraction has 144025 states and 226157 transitions. [2023-12-15 18:05:26,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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) [2023-12-15 18:05:26,687 INFO L276 IsEmpty]: Start isEmpty. Operand 144025 states and 226157 transitions. Received shutdown request... [2023-12-15 18:05:26,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 18:05:26,831 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:05:26,838 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:05:26,992 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,SelfDestructingSolverStorable26 [2023-12-15 18:05:26,992 WARN L619 AbstractCegarLoop]: Verification canceled: while IsEmpty was searching accepting run (input had 144025 states). [2023-12-15 18:05:26,994 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:05:26,995 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:05:26,997 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:26,999 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:05:27,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:05:27 BoogieIcfgContainer [2023-12-15 18:05:27,001 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:05:27,002 INFO L158 Benchmark]: Toolchain (without parser) took 59560.58ms. Allocated memory was 276.8MB in the beginning and 6.2GB in the end (delta: 5.9GB). Free memory was 227.3MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 18:05:27,002 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory was 126.7MB in the beginning and 126.6MB in the end (delta: 85.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:05:27,002 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.63ms. Allocated memory is still 276.8MB. Free memory was 227.3MB in the beginning and 205.8MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-15 18:05:27,002 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.01ms. Allocated memory is still 276.8MB. Free memory was 205.8MB in the beginning and 202.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:05:27,002 INFO L158 Benchmark]: Boogie Preprocessor took 55.77ms. Allocated memory is still 276.8MB. Free memory was 202.2MB in the beginning and 198.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:05:27,004 INFO L158 Benchmark]: RCFGBuilder took 756.23ms. Allocated memory is still 276.8MB. Free memory was 198.0MB in the beginning and 234.0MB in the end (delta: -36.0MB). Peak memory consumption was 47.9MB. Max. memory is 8.0GB. [2023-12-15 18:05:27,004 INFO L158 Benchmark]: TraceAbstraction took 58320.53ms. Allocated memory was 276.8MB in the beginning and 6.2GB in the end (delta: 5.9GB). Free memory was 233.5MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 18:05:27,007 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory was 126.7MB in the beginning and 126.6MB in the end (delta: 85.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 371.63ms. Allocated memory is still 276.8MB. Free memory was 227.3MB in the beginning and 205.8MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.01ms. Allocated memory is still 276.8MB. Free memory was 205.8MB in the beginning and 202.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.77ms. Allocated memory is still 276.8MB. Free memory was 202.2MB in the beginning and 198.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 756.23ms. Allocated memory is still 276.8MB. Free memory was 198.0MB in the beginning and 234.0MB in the end (delta: -36.0MB). Peak memory consumption was 47.9MB. Max. memory is 8.0GB. * TraceAbstraction took 58320.53ms. Allocated memory was 276.8MB in the beginning and 6.2GB in the end (delta: 5.9GB). Free memory was 233.5MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 390]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 390). Cancelled while IsEmpty was searching accepting run (input had 144025 states). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while IsEmpty was searching accepting run (input had 144025 states). - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 273 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 58.3s, OverallIterations: 27, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 35.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17857 SdHoareTripleChecker+Valid, 16.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17524 mSDsluCounter, 20517 SdHoareTripleChecker+Invalid, 13.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13737 mSDsCounter, 1486 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25618 IncrementalHoareTripleChecker+Invalid, 27104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1486 mSolverCounterUnsat, 6780 mSDtfsCounter, 25618 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1216 GetRequests, 974 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144025occurred in iteration=27, InterpolantAutomatonStates: 242, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.8s AutomataMinimizationTime, 27 MinimizatonAttempts, 26773 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2958 NumberOfCodeBlocks, 2958 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 3045 ConstructedInterpolants, 0 QuantifiedInterpolants, 7555 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2478 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 34 InterpolantComputations, 26 PerfectInterpolantSequences, 366/463 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown