/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/Problem05_label49+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:33:59,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:33:59,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:33:59,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:33:59,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:33:59,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:33:59,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:33:59,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:33:59,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:33:59,597 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:33:59,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:33:59,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:33:59,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:33:59,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:33:59,599 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:33:59,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:33:59,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:33:59,600 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:33:59,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:33:59,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:33:59,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:33:59,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:33:59,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:33:59,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:33:59,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:33:59,602 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:33:59,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:33:59,602 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:33:59,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:33:59,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:33:59,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:33:59,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:33:59,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:33:59,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:33:59,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:33:59,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:33:59,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:33:59,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:33:59,604 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:33:59,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:33:59,605 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:33:59,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:33:59,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:33:59,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:33:59,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:33:59,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:33:59,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:33:59,816 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:33:59,817 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:33:59,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.04.cil-1.c [2023-12-18 22:34:00,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:34:01,399 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:34:01,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.04.cil-1.c [2023-12-18 22:34:01,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ee5e1fc/cbeaa3c1fe034468a4960ba072b5ebd6/FLAG0b6c22f99 [2023-12-18 22:34:01,463 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ee5e1fc/cbeaa3c1fe034468a4960ba072b5ebd6 [2023-12-18 22:34:01,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:34:01,467 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:34:01,469 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:34:01,469 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:34:01,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:34:01,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:34:01" (1/1) ... [2023-12-18 22:34:01,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76082808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:01, skipping insertion in model container [2023-12-18 22:34:01,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:34:01" (1/1) ... [2023-12-18 22:34:01,684 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:34:02,900 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/Problem05_label49+token_ring.04.cil-1.c[380593,380606] [2023-12-18 22:34:02,924 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/Problem05_label49+token_ring.04.cil-1.c[383339,383352] [2023-12-18 22:34:03,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:34:03,088 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:34:03,763 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/Problem05_label49+token_ring.04.cil-1.c[380593,380606] [2023-12-18 22:34:03,770 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/Problem05_label49+token_ring.04.cil-1.c[383339,383352] [2023-12-18 22:34:03,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:34:03,846 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:34:03,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03 WrapperNode [2023-12-18 22:34:03,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:34:03,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:34:03,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:34:03,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:34:03,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:03,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,299 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12753 [2023-12-18 22:34:04,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:34:04,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:34:04,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:34:04,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:34:04,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,469 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]. [2023-12-18 22:34:04,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:34:04,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:34:04,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:34:04,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:34:04,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (1/1) ... [2023-12-18 22:34:04,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:34:04,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:34:04,795 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) [2023-12-18 22:34:04,817 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 [2023-12-18 22:34:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:34:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:34:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:34:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:34:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:34:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:34:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:34:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:34:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:34:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:34:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:34:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:34:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:34:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:34:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:34:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:34:04,937 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:34:04,939 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:34:10,558 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:34:10,658 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:34:10,658 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-18 22:34:10,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:34:10 BoogieIcfgContainer [2023-12-18 22:34:10,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:34:10,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:34:10,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:34:10,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:34:10,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:34:01" (1/3) ... [2023-12-18 22:34:10,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cff922c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:34:10, skipping insertion in model container [2023-12-18 22:34:10,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:34:03" (2/3) ... [2023-12-18 22:34:10,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cff922c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:34:10, skipping insertion in model container [2023-12-18 22:34:10,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:34:10" (3/3) ... [2023-12-18 22:34:10,665 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.04.cil-1.c [2023-12-18 22:34:10,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:34:10,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:34:10,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:34:10,738 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;@76f1c864, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:34:10,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:34:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 2287 states, 2260 states have (on average 1.8836283185840708) internal successors, (4257), 2263 states have internal predecessors, (4257), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-18 22:34:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:10,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:10,758 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] [2023-12-18 22:34:10,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:10,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash 970558470, now seen corresponding path program 1 times [2023-12-18 22:34:10,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:10,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347915894] [2023-12-18 22:34:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:10,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:11,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:11,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347915894] [2023-12-18 22:34:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347915894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:11,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:11,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:34:11,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195544342] [2023-12-18 22:34:11,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:11,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:34:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:11,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:34:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:34:11,153 INFO L87 Difference]: Start difference. First operand has 2287 states, 2260 states have (on average 1.8836283185840708) internal successors, (4257), 2263 states have internal predecessors, (4257), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 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) [2023-12-18 22:34:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:11,803 INFO L93 Difference]: Finished difference Result 4620 states and 8666 transitions. [2023-12-18 22:34:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:34:11,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:11,823 INFO L225 Difference]: With dead ends: 4620 [2023-12-18 22:34:11,823 INFO L226 Difference]: Without dead ends: 2333 [2023-12-18 22:34:11,831 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 [2023-12-18 22:34:11,834 INFO L413 NwaCegarLoop]: 4105 mSDtfsCounter, 411 mSDsluCounter, 12028 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 16133 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:11,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 16133 Invalid, 486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 22:34:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2023-12-18 22:34:11,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2283. [2023-12-18 22:34:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2257 states have (on average 1.8489144882587505) internal successors, (4173), 2259 states have internal predecessors, (4173), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-18 22:34:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 4209 transitions. [2023-12-18 22:34:11,933 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 4209 transitions. Word has length 81 [2023-12-18 22:34:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:11,934 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 4209 transitions. [2023-12-18 22:34:11,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 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) [2023-12-18 22:34:11,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 4209 transitions. [2023-12-18 22:34:11,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:11,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:11,937 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] [2023-12-18 22:34:11,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:34:11,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:11,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash 83335624, now seen corresponding path program 1 times [2023-12-18 22:34:11,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314478243] [2023-12-18 22:34:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:11,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:12,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:12,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:12,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:12,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:12,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:12,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314478243] [2023-12-18 22:34:12,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314478243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:12,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:12,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:34:12,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353901712] [2023-12-18 22:34:12,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:12,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:34:12,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:12,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:34:12,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:34:12,106 INFO L87 Difference]: Start difference. First operand 2283 states and 4209 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-18 22:34:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:13,156 INFO L93 Difference]: Finished difference Result 2690 states and 4863 transitions. [2023-12-18 22:34:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:34:13,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:13,166 INFO L225 Difference]: With dead ends: 2690 [2023-12-18 22:34:13,166 INFO L226 Difference]: Without dead ends: 2538 [2023-12-18 22:34:13,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:34:13,168 INFO L413 NwaCegarLoop]: 4086 mSDtfsCounter, 4562 mSDsluCounter, 12233 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4573 SdHoareTripleChecker+Valid, 16319 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:13,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4573 Valid, 16319 Invalid, 1022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 22:34:13,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2023-12-18 22:34:13,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2439. [2023-12-18 22:34:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2393 states have (on average 1.8340994567488509) internal successors, (4389), 2396 states have internal predecessors, (4389), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-12-18 22:34:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 4454 transitions. [2023-12-18 22:34:13,222 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 4454 transitions. Word has length 81 [2023-12-18 22:34:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:13,223 INFO L495 AbstractCegarLoop]: Abstraction has 2439 states and 4454 transitions. [2023-12-18 22:34:13,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-18 22:34:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 4454 transitions. [2023-12-18 22:34:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:13,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:13,225 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] [2023-12-18 22:34:13,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:34:13,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:13,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1334463480, now seen corresponding path program 1 times [2023-12-18 22:34:13,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:13,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392629048] [2023-12-18 22:34:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:13,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:13,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:13,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:13,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:13,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392629048] [2023-12-18 22:34:13,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392629048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:13,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:13,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:34:13,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990941220] [2023-12-18 22:34:13,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:13,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:34:13,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:13,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:34:13,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:13,343 INFO L87 Difference]: Start difference. First operand 2439 states and 4454 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:14,593 INFO L93 Difference]: Finished difference Result 3055 states and 5437 transitions. [2023-12-18 22:34:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:34:14,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:14,602 INFO L225 Difference]: With dead ends: 3055 [2023-12-18 22:34:14,602 INFO L226 Difference]: Without dead ends: 2747 [2023-12-18 22:34:14,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:34:14,605 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4567 mSDsluCounter, 16521 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 20701 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:14,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 20701 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:34:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2023-12-18 22:34:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2584. [2023-12-18 22:34:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2518 states have (on average 1.8200953137410643) internal successors, (4583), 2522 states have internal predecessors, (4583), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-18 22:34:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 4676 transitions. [2023-12-18 22:34:14,674 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 4676 transitions. Word has length 81 [2023-12-18 22:34:14,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:14,674 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 4676 transitions. [2023-12-18 22:34:14,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 4676 transitions. [2023-12-18 22:34:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:14,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:14,676 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] [2023-12-18 22:34:14,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:34:14,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:14,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:14,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1744350090, now seen corresponding path program 1 times [2023-12-18 22:34:14,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:14,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101097120] [2023-12-18 22:34:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:14,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:14,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:14,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:14,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:14,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101097120] [2023-12-18 22:34:14,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101097120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:14,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:14,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:34:14,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287635094] [2023-12-18 22:34:14,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:14,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:34:14,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:14,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:34:14,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:14,806 INFO L87 Difference]: Start difference. First operand 2584 states and 4676 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:16,005 INFO L93 Difference]: Finished difference Result 3589 states and 6275 transitions. [2023-12-18 22:34:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:34:16,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:16,017 INFO L225 Difference]: With dead ends: 3589 [2023-12-18 22:34:16,017 INFO L226 Difference]: Without dead ends: 3136 [2023-12-18 22:34:16,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:34:16,022 INFO L413 NwaCegarLoop]: 4095 mSDtfsCounter, 4613 mSDsluCounter, 16302 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4624 SdHoareTripleChecker+Valid, 20397 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:16,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4624 Valid, 20397 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:34:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2023-12-18 22:34:16,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 2875. [2023-12-18 22:34:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2769 states have (on average 1.795594077284218) internal successors, (4972), 2775 states have internal predecessors, (4972), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-18 22:34:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5125 transitions. [2023-12-18 22:34:16,101 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5125 transitions. Word has length 81 [2023-12-18 22:34:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:16,101 INFO L495 AbstractCegarLoop]: Abstraction has 2875 states and 5125 transitions. [2023-12-18 22:34:16,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5125 transitions. [2023-12-18 22:34:16,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:16,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:16,103 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] [2023-12-18 22:34:16,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:34:16,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:16,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:16,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1012382664, now seen corresponding path program 1 times [2023-12-18 22:34:16,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:16,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630204250] [2023-12-18 22:34:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:16,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:16,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:16,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:16,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:16,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630204250] [2023-12-18 22:34:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630204250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:16,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:16,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:34:16,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906115426] [2023-12-18 22:34:16,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:16,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:34:16,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:16,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:34:16,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:16,273 INFO L87 Difference]: Start difference. First operand 2875 states and 5125 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:16,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:16,996 INFO L93 Difference]: Finished difference Result 3870 states and 6717 transitions. [2023-12-18 22:34:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:34:16,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:16,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:17,006 INFO L225 Difference]: With dead ends: 3870 [2023-12-18 22:34:17,006 INFO L226 Difference]: Without dead ends: 3126 [2023-12-18 22:34:17,008 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 [2023-12-18 22:34:17,008 INFO L413 NwaCegarLoop]: 4073 mSDtfsCounter, 4481 mSDsluCounter, 12140 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 16213 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:17,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 16213 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 22:34:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2023-12-18 22:34:17,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 2875. [2023-12-18 22:34:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2769 states have (on average 1.79378837125316) internal successors, (4967), 2775 states have internal predecessors, (4967), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-18 22:34:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5120 transitions. [2023-12-18 22:34:17,066 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5120 transitions. Word has length 81 [2023-12-18 22:34:17,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:17,066 INFO L495 AbstractCegarLoop]: Abstraction has 2875 states and 5120 transitions. [2023-12-18 22:34:17,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5120 transitions. [2023-12-18 22:34:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:17,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:17,068 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] [2023-12-18 22:34:17,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:34:17,068 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:17,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash -673797174, now seen corresponding path program 1 times [2023-12-18 22:34:17,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:17,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297330670] [2023-12-18 22:34:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:17,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:17,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:17,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:17,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297330670] [2023-12-18 22:34:17,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297330670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:17,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:17,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:34:17,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391664632] [2023-12-18 22:34:17,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:17,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:34:17,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:17,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:34:17,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:17,184 INFO L87 Difference]: Start difference. First operand 2875 states and 5120 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:18,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:18,383 INFO L93 Difference]: Finished difference Result 4829 states and 8192 transitions. [2023-12-18 22:34:18,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:34:18,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:18,396 INFO L225 Difference]: With dead ends: 4829 [2023-12-18 22:34:18,396 INFO L226 Difference]: Without dead ends: 4085 [2023-12-18 22:34:18,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:34:18,400 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4711 mSDsluCounter, 16516 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4727 SdHoareTripleChecker+Valid, 20692 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:18,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4727 Valid, 20692 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:34:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4085 states. [2023-12-18 22:34:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4085 to 3459. [2023-12-18 22:34:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3277 states have (on average 1.7552639609398841) internal successors, (5752), 3287 states have internal predecessors, (5752), 118 states have call successors, (118), 54 states have call predecessors, (118), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2023-12-18 22:34:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 6023 transitions. [2023-12-18 22:34:18,494 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 6023 transitions. Word has length 81 [2023-12-18 22:34:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:18,494 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 6023 transitions. [2023-12-18 22:34:18,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:18,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 6023 transitions. [2023-12-18 22:34:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:18,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:18,498 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] [2023-12-18 22:34:18,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:34:18,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:18,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1091193780, now seen corresponding path program 1 times [2023-12-18 22:34:18,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:18,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765999213] [2023-12-18 22:34:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:18,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:18,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765999213] [2023-12-18 22:34:18,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765999213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:18,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:18,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:34:18,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645166338] [2023-12-18 22:34:18,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:18,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:34:18,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:18,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:34:18,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:18,618 INFO L87 Difference]: Start difference. First operand 3459 states and 6023 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:20,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:20,037 INFO L93 Difference]: Finished difference Result 6997 states and 11579 transitions. [2023-12-18 22:34:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:34:20,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:20,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:20,056 INFO L225 Difference]: With dead ends: 6997 [2023-12-18 22:34:20,056 INFO L226 Difference]: Without dead ends: 5669 [2023-12-18 22:34:20,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:34:20,061 INFO L413 NwaCegarLoop]: 4175 mSDtfsCounter, 4584 mSDsluCounter, 16513 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20688 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:20,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4594 Valid, 20688 Invalid, 1750 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 22:34:20,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2023-12-18 22:34:20,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4582. [2023-12-18 22:34:20,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 4252 states have (on average 1.7064910630291628) internal successors, (7256), 4270 states have internal predecessors, (7256), 210 states have call successors, (210), 102 states have call predecessors, (210), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2023-12-18 22:34:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 7773 transitions. [2023-12-18 22:34:20,308 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 7773 transitions. Word has length 81 [2023-12-18 22:34:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:20,309 INFO L495 AbstractCegarLoop]: Abstraction has 4582 states and 7773 transitions. [2023-12-18 22:34:20,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:20,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 7773 transitions. [2023-12-18 22:34:20,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:20,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:20,311 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] [2023-12-18 22:34:20,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 22:34:20,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:20,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:20,311 INFO L85 PathProgramCache]: Analyzing trace with hash -411921526, now seen corresponding path program 1 times [2023-12-18 22:34:20,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:20,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621897266] [2023-12-18 22:34:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:20,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:20,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:20,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:20,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:20,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:20,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:20,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621897266] [2023-12-18 22:34:20,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621897266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:20,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:20,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:34:20,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896248731] [2023-12-18 22:34:20,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:20,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:34:20,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:20,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:34:20,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:20,404 INFO L87 Difference]: Start difference. First operand 4582 states and 7773 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:21,586 INFO L93 Difference]: Finished difference Result 11098 states and 18019 transitions. [2023-12-18 22:34:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:34:21,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:21,616 INFO L225 Difference]: With dead ends: 11098 [2023-12-18 22:34:21,616 INFO L226 Difference]: Without dead ends: 8647 [2023-12-18 22:34:21,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:34:21,627 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4639 mSDsluCounter, 16516 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4655 SdHoareTripleChecker+Valid, 20692 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:21,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4655 Valid, 20692 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 22:34:21,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8647 states. [2023-12-18 22:34:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8647 to 6867. [2023-12-18 22:34:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6867 states, 6249 states have (on average 1.6549847975676109) internal successors, (10342), 6283 states have internal predecessors, (10342), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-18 22:34:21,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6867 states to 6867 states and 11389 transitions. [2023-12-18 22:34:21,854 INFO L78 Accepts]: Start accepts. Automaton has 6867 states and 11389 transitions. Word has length 81 [2023-12-18 22:34:21,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:21,854 INFO L495 AbstractCegarLoop]: Abstraction has 6867 states and 11389 transitions. [2023-12-18 22:34:21,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:21,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6867 states and 11389 transitions. [2023-12-18 22:34:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:21,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:21,859 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] [2023-12-18 22:34:21,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 22:34:21,859 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:21,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1549653132, now seen corresponding path program 1 times [2023-12-18 22:34:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:21,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078784873] [2023-12-18 22:34:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:21,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:21,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:21,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:21,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078784873] [2023-12-18 22:34:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078784873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:21,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:21,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:34:21,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532185541] [2023-12-18 22:34:21,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:21,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:34:21,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:34:21,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:21,954 INFO L87 Difference]: Start difference. First operand 6867 states and 11389 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:23,388 INFO L93 Difference]: Finished difference Result 19165 states and 30877 transitions. [2023-12-18 22:34:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:34:23,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:23,430 INFO L225 Difference]: With dead ends: 19165 [2023-12-18 22:34:23,430 INFO L226 Difference]: Without dead ends: 14429 [2023-12-18 22:34:23,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:34:23,448 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4603 mSDsluCounter, 16516 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 20692 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:23,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4619 Valid, 20692 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 22:34:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14429 states. [2023-12-18 22:34:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14429 to 11436. [2023-12-18 22:34:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11436 states, 10258 states have (on average 1.6127900175472802) internal successors, (16544), 10324 states have internal predecessors, (16544), 722 states have call successors, (722), 390 states have call predecessors, (722), 454 states have return successors, (1515), 785 states have call predecessors, (1515), 722 states have call successors, (1515) [2023-12-18 22:34:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 18781 transitions. [2023-12-18 22:34:23,861 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 18781 transitions. Word has length 81 [2023-12-18 22:34:23,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:23,861 INFO L495 AbstractCegarLoop]: Abstraction has 11436 states and 18781 transitions. [2023-12-18 22:34:23,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:23,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 18781 transitions. [2023-12-18 22:34:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:23,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:23,869 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] [2023-12-18 22:34:23,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 22:34:23,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:23,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1751477066, now seen corresponding path program 1 times [2023-12-18 22:34:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:23,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647977126] [2023-12-18 22:34:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:23,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:23,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:23,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:23,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:23,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:23,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647977126] [2023-12-18 22:34:23,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647977126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:23,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:23,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:34:23,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633611108] [2023-12-18 22:34:23,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:23,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:34:23,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:34:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:23,970 INFO L87 Difference]: Start difference. First operand 11436 states and 18781 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:25,434 INFO L93 Difference]: Finished difference Result 34784 states and 56375 transitions. [2023-12-18 22:34:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:34:25,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:25,526 INFO L225 Difference]: With dead ends: 34784 [2023-12-18 22:34:25,526 INFO L226 Difference]: Without dead ends: 25479 [2023-12-18 22:34:25,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:34:25,563 INFO L413 NwaCegarLoop]: 4166 mSDtfsCounter, 4552 mSDsluCounter, 16504 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4562 SdHoareTripleChecker+Valid, 20670 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:25,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4562 Valid, 20670 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 22:34:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25479 states. [2023-12-18 22:34:26,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25479 to 20561. [2023-12-18 22:34:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20561 states, 18303 states have (on average 1.5847675244495438) internal successors, (29006), 18433 states have internal predecessors, (29006), 1358 states have call successors, (1358), 770 states have call predecessors, (1358), 898 states have return successors, (3673), 1485 states have call predecessors, (3673), 1358 states have call successors, (3673) [2023-12-18 22:34:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20561 states to 20561 states and 34037 transitions. [2023-12-18 22:34:26,623 INFO L78 Accepts]: Start accepts. Automaton has 20561 states and 34037 transitions. Word has length 81 [2023-12-18 22:34:26,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:26,623 INFO L495 AbstractCegarLoop]: Abstraction has 20561 states and 34037 transitions. [2023-12-18 22:34:26,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-18 22:34:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 20561 states and 34037 transitions. [2023-12-18 22:34:26,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 22:34:26,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:26,638 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] [2023-12-18 22:34:26,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 22:34:26,638 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:26,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:26,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1982790452, now seen corresponding path program 1 times [2023-12-18 22:34:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:26,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616118555] [2023-12-18 22:34:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:26,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:26,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:26,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:26,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:34:26,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:26,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616118555] [2023-12-18 22:34:26,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616118555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:26,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:34:26,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:34:26,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487851908] [2023-12-18 22:34:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:26,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:34:26,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:26,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:34:26,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:34:26,714 INFO L87 Difference]: Start difference. First operand 20561 states and 34037 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-18 22:34:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:28,495 INFO L93 Difference]: Finished difference Result 54256 states and 88376 transitions. [2023-12-18 22:34:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:34:28,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2023-12-18 22:34:28,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:28,679 INFO L225 Difference]: With dead ends: 54256 [2023-12-18 22:34:28,679 INFO L226 Difference]: Without dead ends: 35827 [2023-12-18 22:34:28,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-18 22:34:28,714 INFO L413 NwaCegarLoop]: 4213 mSDtfsCounter, 4743 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 16522 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:28,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4772 Valid, 16522 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 22:34:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35827 states. [2023-12-18 22:34:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35827 to 29690. [2023-12-18 22:34:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29690 states, 26260 states have (on average 1.562909367859863) internal successors, (41042), 26519 states have internal predecessors, (41042), 2076 states have call successors, (2076), 1160 states have call predecessors, (2076), 1352 states have return successors, (5121), 2138 states have call predecessors, (5121), 2076 states have call successors, (5121) [2023-12-18 22:34:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29690 states to 29690 states and 48239 transitions. [2023-12-18 22:34:29,774 INFO L78 Accepts]: Start accepts. Automaton has 29690 states and 48239 transitions. Word has length 81 [2023-12-18 22:34:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:29,774 INFO L495 AbstractCegarLoop]: Abstraction has 29690 states and 48239 transitions. [2023-12-18 22:34:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-18 22:34:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 29690 states and 48239 transitions. [2023-12-18 22:34:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-18 22:34:29,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:29,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:34:29,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 22:34:29,827 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:29,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1753624307, now seen corresponding path program 1 times [2023-12-18 22:34:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294044305] [2023-12-18 22:34:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:29,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:29,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:29,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:34:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:29,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:34:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:29,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:34:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:34:29,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:29,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294044305] [2023-12-18 22:34:29,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294044305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:34:29,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223592826] [2023-12-18 22:34:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:29,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:34:29,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:34:29,942 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) [2023-12-18 22:34:29,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 22:34:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:30,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:34:30,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:34:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-18 22:34:30,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:34:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223592826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:34:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:34:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776725779] [2023-12-18 22:34:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:30,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:34:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:30,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:34:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:30,145 INFO L87 Difference]: Start difference. First operand 29690 states and 48239 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2023-12-18 22:34:31,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:31,635 INFO L93 Difference]: Finished difference Result 84209 states and 136555 transitions. [2023-12-18 22:34:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:34:31,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 131 [2023-12-18 22:34:31,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:31,876 INFO L225 Difference]: With dead ends: 84209 [2023-12-18 22:34:31,877 INFO L226 Difference]: Without dead ends: 56651 [2023-12-18 22:34:31,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:31,919 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4157 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4157 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:31,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4157 Valid, 4391 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:34:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56651 states. [2023-12-18 22:34:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56651 to 56455. [2023-12-18 22:34:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56455 states, 49707 states have (on average 1.5459995574064016) internal successors, (76847), 50223 states have internal predecessors, (76847), 4046 states have call successors, (4046), 2316 states have call predecessors, (4046), 2700 states have return successors, (10009), 4043 states have call predecessors, (10009), 4046 states have call successors, (10009) [2023-12-18 22:34:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56455 states to 56455 states and 90902 transitions. [2023-12-18 22:34:34,012 INFO L78 Accepts]: Start accepts. Automaton has 56455 states and 90902 transitions. Word has length 131 [2023-12-18 22:34:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:34,012 INFO L495 AbstractCegarLoop]: Abstraction has 56455 states and 90902 transitions. [2023-12-18 22:34:34,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2023-12-18 22:34:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 56455 states and 90902 transitions. [2023-12-18 22:34:34,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-18 22:34:34,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:34,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:34:34,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 22:34:34,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-18 22:34:34,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:34,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:34,316 INFO L85 PathProgramCache]: Analyzing trace with hash -473988563, now seen corresponding path program 1 times [2023-12-18 22:34:34,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:34,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539770405] [2023-12-18 22:34:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:34,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:34,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:34,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:34:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:34,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:34:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:34:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:34:34,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:34,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539770405] [2023-12-18 22:34:34,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539770405] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:34:34,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527479008] [2023-12-18 22:34:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:34,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:34:34,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:34:34,430 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) [2023-12-18 22:34:34,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 22:34:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:34,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:34:34,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:34:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-18 22:34:34,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:34:34,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527479008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:34,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:34:34,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:34:34,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393110022] [2023-12-18 22:34:34,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:34,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:34:34,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:34,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:34:34,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:34,590 INFO L87 Difference]: Start difference. First operand 56455 states and 90902 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2023-12-18 22:34:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:37,940 INFO L93 Difference]: Finished difference Result 163896 states and 264344 transitions. [2023-12-18 22:34:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:34:37,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 131 [2023-12-18 22:34:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:38,497 INFO L225 Difference]: With dead ends: 163896 [2023-12-18 22:34:38,498 INFO L226 Difference]: Without dead ends: 109573 [2023-12-18 22:34:38,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:38,609 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4162 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4162 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:38,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4162 Valid, 4391 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:34:38,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109573 states. [2023-12-18 22:34:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109573 to 109183. [2023-12-18 22:34:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109183 states, 95913 states have (on average 1.5345886376195093) internal successors, (147187), 96943 states have internal predecessors, (147187), 7880 states have call successors, (7880), 4620 states have call predecessors, (7880), 5388 states have return successors, (19679), 7747 states have call predecessors, (19679), 7880 states have call successors, (19679) [2023-12-18 22:34:43,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109183 states to 109183 states and 174746 transitions. [2023-12-18 22:34:43,204 INFO L78 Accepts]: Start accepts. Automaton has 109183 states and 174746 transitions. Word has length 131 [2023-12-18 22:34:43,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:34:43,204 INFO L495 AbstractCegarLoop]: Abstraction has 109183 states and 174746 transitions. [2023-12-18 22:34:43,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2023-12-18 22:34:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 109183 states and 174746 transitions. [2023-12-18 22:34:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-18 22:34:43,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:34:43,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:34:43,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 22:34:43,799 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,SelfDestructingSolverStorable12 [2023-12-18 22:34:43,799 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:34:43,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:34:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1157921523, now seen corresponding path program 1 times [2023-12-18 22:34:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:34:43,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915612448] [2023-12-18 22:34:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:43,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:34:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:34:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:43,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:34:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:43,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:34:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:34:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:34:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:43,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:34:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:43,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:34:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:43,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:34:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:34:43,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:34:43,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915612448] [2023-12-18 22:34:43,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915612448] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:34:43,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320361400] [2023-12-18 22:34:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:34:43,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:34:43,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:34:43,919 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) [2023-12-18 22:34:43,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 22:34:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:34:44,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:34:44,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:34:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 22:34:44,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:34:44,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320361400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:34:44,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:34:44,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:34:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685139928] [2023-12-18 22:34:44,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:34:44,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:34:44,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:34:44,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:34:44,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:44,053 INFO L87 Difference]: Start difference. First operand 109183 states and 174746 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:34:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:34:50,764 INFO L93 Difference]: Finished difference Result 319181 states and 515201 transitions. [2023-12-18 22:34:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:34:50,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 131 [2023-12-18 22:34:50,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:34:51,944 INFO L225 Difference]: With dead ends: 319181 [2023-12-18 22:34:51,944 INFO L226 Difference]: Without dead ends: 212131 [2023-12-18 22:34:52,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:34:52,183 INFO L413 NwaCegarLoop]: 4395 mSDtfsCounter, 219 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 8581 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:34:52,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 8581 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 22:34:52,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212131 states. [2023-12-18 22:34:59,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212131 to 212131. [2023-12-18 22:34:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212131 states, 186258 states have (on average 1.5254056201612816) internal successors, (284119), 188057 states have internal predecessors, (284119), 15167 states have call successors, (15167), 9168 states have call predecessors, (15167), 10704 states have return successors, (41394), 15161 states have call predecessors, (41394), 15167 states have call successors, (41394) [2023-12-18 22:35:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212131 states to 212131 states and 340680 transitions. [2023-12-18 22:35:01,120 INFO L78 Accepts]: Start accepts. Automaton has 212131 states and 340680 transitions. Word has length 131 [2023-12-18 22:35:01,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:35:01,121 INFO L495 AbstractCegarLoop]: Abstraction has 212131 states and 340680 transitions. [2023-12-18 22:35:01,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:35:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 212131 states and 340680 transitions. [2023-12-18 22:35:01,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-18 22:35:01,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:35:01,878 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:35:01,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 22:35:02,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:35:02,083 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:35:02,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:35:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1484438306, now seen corresponding path program 1 times [2023-12-18 22:35:02,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:35:02,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421257970] [2023-12-18 22:35:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:35:02,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:35:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:35:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-18 22:35:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-18 22:35:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-18 22:35:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:35:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:35:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:35:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-18 22:35:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:35:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-18 22:35:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-18 22:35:02,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:35:02,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421257970] [2023-12-18 22:35:02,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421257970] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:35:02,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871405510] [2023-12-18 22:35:02,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:35:02,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:35:02,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:35:02,199 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) [2023-12-18 22:35:02,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 22:35:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:35:02,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:35:02,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:35:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 22:35:02,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:35:02,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871405510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:35:02,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:35:02,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:35:02,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979921400] [2023-12-18 22:35:02,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:35:02,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:35:02,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:35:02,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:35:02,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:35:02,450 INFO L87 Difference]: Start difference. First operand 212131 states and 340680 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-18 22:35:16,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:35:16,029 INFO L93 Difference]: Finished difference Result 627009 states and 1012915 transitions. [2023-12-18 22:35:16,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:35:16,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 169 [2023-12-18 22:35:16,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:35:18,086 INFO L225 Difference]: With dead ends: 627009 [2023-12-18 22:35:18,086 INFO L226 Difference]: Without dead ends: 417017 [2023-12-18 22:35:18,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:35:18,667 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4106 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4106 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:35:18,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4106 Valid, 4391 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:35:18,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417017 states.