./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.10.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ba9401cadb8fecd59a1a331c94e3215cc972a92f03516bfd6c95164e3ec98a9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:34:57,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:34:57,739 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:34:57,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:34:57,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:34:57,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:34:57,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:34:57,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:34:57,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:34:57,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:34:57,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:34:57,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:34:57,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:34:57,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:34:57,778 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:34:57,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:34:57,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:34:57,783 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:34:57,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:34:57,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:34:57,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:34:57,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:34:57,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:34:57,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:34:57,787 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:34:57,787 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:34:57,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:34:57,788 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:34:57,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:34:57,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:34:57,789 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:34:57,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:34:57,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:34:57,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:34:57,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:34:57,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:34:57,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:34:57,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:34:57,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:34:57,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:34:57,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:34:57,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:34:57,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ba9401cadb8fecd59a1a331c94e3215cc972a92f03516bfd6c95164e3ec98a9 [2024-11-18 14:34:58,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:34:58,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:34:58,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:34:58,070 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:34:58,071 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:34:58,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.10.cil-2.c [2024-11-18 14:34:59,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:34:59,780 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:34:59,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-2.c [2024-11-18 14:34:59,797 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20e21225/bda35b5ca00840baaf8572022cd78f04/FLAGd2f1364d5 [2024-11-18 14:34:59,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20e21225/bda35b5ca00840baaf8572022cd78f04 [2024-11-18 14:34:59,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:34:59,815 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:34:59,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:34:59,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:34:59,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:34:59,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:34:59" (1/1) ... [2024-11-18 14:34:59,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d49165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:34:59, skipping insertion in model container [2024-11-18 14:34:59,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:34:59" (1/1) ... [2024-11-18 14:34:59,871 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:35:00,039 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-2.c[671,684] [2024-11-18 14:35:00,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:35:00,218 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:35:00,229 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-2.c[671,684] [2024-11-18 14:35:00,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:35:00,310 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:35:00,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00 WrapperNode [2024-11-18 14:35:00,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:35:00,312 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:35:00,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:35:00,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:35:00,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,412 INFO L138 Inliner]: procedures = 48, calls = 61, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 759 [2024-11-18 14:35:00,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:35:00,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:35:00,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:35:00,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:35:00,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,459 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]. [2024-11-18 14:35:00,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:35:00,498 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:35:00,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:35:00,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:35:00,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (1/1) ... [2024-11-18 14:35:00,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:35:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:35:00,529 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) [2024-11-18 14:35:00,531 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 [2024-11-18 14:35:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:35:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 14:35:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 14:35:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 14:35:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 14:35:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 14:35:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 14:35:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 14:35:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 14:35:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 14:35:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 14:35:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:35:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 14:35:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 14:35:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:35:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:35:00,677 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:35:00,679 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:35:01,480 INFO L? ?]: Removed 85 outVars from TransFormulas that were not future-live. [2024-11-18 14:35:01,480 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:35:01,513 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:35:01,513 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-18 14:35:01,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:35:01 BoogieIcfgContainer [2024-11-18 14:35:01,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:35:01,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:35:01,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:35:01,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:35:01,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:34:59" (1/3) ... [2024-11-18 14:35:01,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8a6e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:35:01, skipping insertion in model container [2024-11-18 14:35:01,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:35:00" (2/3) ... [2024-11-18 14:35:01,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8a6e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:35:01, skipping insertion in model container [2024-11-18 14:35:01,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:35:01" (3/3) ... [2024-11-18 14:35:01,526 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-2.c [2024-11-18 14:35:01,542 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:35:01,542 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:35:01,616 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:35:01,622 INFO L333 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, 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;@3a15f30f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:35:01,622 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:35:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 343 states, 311 states have (on average 1.6334405144694535) internal successors, (508), 313 states have internal predecessors, (508), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 14:35:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:01,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:01,646 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:01,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:01,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1494795949, now seen corresponding path program 1 times [2024-11-18 14:35:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:01,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400468214] [2024-11-18 14:35:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:01,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:02,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:02,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400468214] [2024-11-18 14:35:02,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400468214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:02,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:02,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:35:02,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462550732] [2024-11-18 14:35:02,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:02,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:35:02,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:02,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:35:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:35:02,209 INFO L87 Difference]: Start difference. First operand has 343 states, 311 states have (on average 1.6334405144694535) internal successors, (508), 313 states have internal predecessors, (508), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:02,312 INFO L93 Difference]: Finished difference Result 679 states and 1103 transitions. [2024-11-18 14:35:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:35:02,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (5), 1 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 155 [2024-11-18 14:35:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:02,327 INFO L225 Difference]: With dead ends: 679 [2024-11-18 14:35:02,328 INFO L226 Difference]: Without dead ends: 338 [2024-11-18 14:35:02,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:35:02,336 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 522 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:02,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 526 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:35:02,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-18 14:35:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2024-11-18 14:35:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 307 states have (on average 1.5472312703583062) internal successors, (475), 308 states have internal predecessors, (475), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 14:35:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 523 transitions. [2024-11-18 14:35:02,402 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 523 transitions. Word has length 155 [2024-11-18 14:35:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:02,404 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 523 transitions. [2024-11-18 14:35:02,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 523 transitions. [2024-11-18 14:35:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:02,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:02,408 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:02,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:35:02,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:02,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:02,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1759443439, now seen corresponding path program 1 times [2024-11-18 14:35:02,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:02,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433772517] [2024-11-18 14:35:02,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:02,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:02,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:02,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433772517] [2024-11-18 14:35:02,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433772517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:02,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:02,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:35:02,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261656665] [2024-11-18 14:35:02,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:02,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:35:02,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:35:02,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:35:02,569 INFO L87 Difference]: Start difference. First operand 338 states and 523 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:02,627 INFO L93 Difference]: Finished difference Result 662 states and 1023 transitions. [2024-11-18 14:35:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:35:02,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (5), 1 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 155 [2024-11-18 14:35:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:02,632 INFO L225 Difference]: With dead ends: 662 [2024-11-18 14:35:02,633 INFO L226 Difference]: Without dead ends: 338 [2024-11-18 14:35:02,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:35:02,636 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 509 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:02,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 521 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:35:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-18 14:35:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2024-11-18 14:35:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 307 states have (on average 1.5439739413680782) internal successors, (474), 308 states have internal predecessors, (474), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 14:35:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 522 transitions. [2024-11-18 14:35:02,667 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 522 transitions. Word has length 155 [2024-11-18 14:35:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:02,668 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 522 transitions. [2024-11-18 14:35:02,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:02,668 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 522 transitions. [2024-11-18 14:35:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:02,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:02,671 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:02,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:35:02,672 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:02,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1348833073, now seen corresponding path program 1 times [2024-11-18 14:35:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:02,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004170937] [2024-11-18 14:35:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:02,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:02,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004170937] [2024-11-18 14:35:02,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004170937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:02,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:02,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:35:02,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272172876] [2024-11-18 14:35:02,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:02,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:35:02,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:02,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:35:02,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:35:02,948 INFO L87 Difference]: Start difference. First operand 338 states and 522 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:03,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:03,724 INFO L93 Difference]: Finished difference Result 1018 states and 1590 transitions. [2024-11-18 14:35:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:35:03,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (5), 2 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 155 [2024-11-18 14:35:03,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:03,732 INFO L225 Difference]: With dead ends: 1018 [2024-11-18 14:35:03,735 INFO L226 Difference]: Without dead ends: 698 [2024-11-18 14:35:03,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:03,738 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 991 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:03,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1448 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-18 14:35:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 673. [2024-11-18 14:35:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 616 states have (on average 1.5568181818181819) internal successors, (959), 618 states have internal predecessors, (959), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2024-11-18 14:35:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1046 transitions. [2024-11-18 14:35:03,798 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1046 transitions. Word has length 155 [2024-11-18 14:35:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:03,800 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1046 transitions. [2024-11-18 14:35:03,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1046 transitions. [2024-11-18 14:35:03,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:03,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:03,804 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:03,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:35:03,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:03,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:03,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1123533899, now seen corresponding path program 1 times [2024-11-18 14:35:03,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:03,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797888300] [2024-11-18 14:35:03,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:03,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:04,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797888300] [2024-11-18 14:35:04,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797888300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:04,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:04,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:04,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832186788] [2024-11-18 14:35:04,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:04,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:04,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:04,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:04,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:04,080 INFO L87 Difference]: Start difference. First operand 673 states and 1046 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:04,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:04,911 INFO L93 Difference]: Finished difference Result 1753 states and 2759 transitions. [2024-11-18 14:35:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:04,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 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 155 [2024-11-18 14:35:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:04,918 INFO L225 Difference]: With dead ends: 1753 [2024-11-18 14:35:04,918 INFO L226 Difference]: Without dead ends: 1098 [2024-11-18 14:35:04,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:35:04,922 INFO L432 NwaCegarLoop]: 689 mSDtfsCounter, 997 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:04,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 2805 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2024-11-18 14:35:04,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 985. [2024-11-18 14:35:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 902 states have (on average 1.5498891352549888) internal successors, (1398), 905 states have internal predecessors, (1398), 62 states have call successors, (62), 18 states have call predecessors, (62), 20 states have return successors, (66), 63 states have call predecessors, (66), 62 states have call successors, (66) [2024-11-18 14:35:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1526 transitions. [2024-11-18 14:35:04,991 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1526 transitions. Word has length 155 [2024-11-18 14:35:04,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:04,991 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 1526 transitions. [2024-11-18 14:35:04,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1526 transitions. [2024-11-18 14:35:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:04,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:04,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:04,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:35:04,994 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:04,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1553992947, now seen corresponding path program 1 times [2024-11-18 14:35:04,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:04,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247832413] [2024-11-18 14:35:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:04,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:05,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:05,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247832413] [2024-11-18 14:35:05,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247832413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:05,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:05,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:05,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470726692] [2024-11-18 14:35:05,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:05,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:05,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:05,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:05,183 INFO L87 Difference]: Start difference. First operand 985 states and 1526 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:05,949 INFO L93 Difference]: Finished difference Result 2747 states and 4314 transitions. [2024-11-18 14:35:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:05,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 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 155 [2024-11-18 14:35:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:05,960 INFO L225 Difference]: With dead ends: 2747 [2024-11-18 14:35:05,960 INFO L226 Difference]: Without dead ends: 1780 [2024-11-18 14:35:05,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:35:05,964 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 1020 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:05,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1958 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:35:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2024-11-18 14:35:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1650. [2024-11-18 14:35:06,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1513 states have (on average 1.5538664904163912) internal successors, (2351), 1520 states have internal predecessors, (2351), 100 states have call successors, (100), 30 states have call predecessors, (100), 36 states have return successors, (116), 103 states have call predecessors, (116), 100 states have call successors, (116) [2024-11-18 14:35:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2567 transitions. [2024-11-18 14:35:06,057 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2567 transitions. Word has length 155 [2024-11-18 14:35:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:06,058 INFO L471 AbstractCegarLoop]: Abstraction has 1650 states and 2567 transitions. [2024-11-18 14:35:06,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2567 transitions. [2024-11-18 14:35:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:06,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:06,061 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:06,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:35:06,062 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:06,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:06,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1917459445, now seen corresponding path program 1 times [2024-11-18 14:35:06,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:06,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195500392] [2024-11-18 14:35:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:06,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:06,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:06,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195500392] [2024-11-18 14:35:06,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195500392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:06,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:06,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:06,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149725830] [2024-11-18 14:35:06,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:06,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:06,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:06,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:06,249 INFO L87 Difference]: Start difference. First operand 1650 states and 2567 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:07,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:07,114 INFO L93 Difference]: Finished difference Result 4878 states and 7713 transitions. [2024-11-18 14:35:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:07,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 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 155 [2024-11-18 14:35:07,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:07,135 INFO L225 Difference]: With dead ends: 4878 [2024-11-18 14:35:07,135 INFO L226 Difference]: Without dead ends: 3246 [2024-11-18 14:35:07,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:35:07,143 INFO L432 NwaCegarLoop]: 678 mSDtfsCounter, 984 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:07,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 2763 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:07,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2024-11-18 14:35:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3088. [2024-11-18 14:35:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 2837 states have (on average 1.5696157913288684) internal successors, (4453), 2858 states have internal predecessors, (4453), 176 states have call successors, (176), 54 states have call predecessors, (176), 74 states have return successors, (240), 183 states have call predecessors, (240), 176 states have call successors, (240) [2024-11-18 14:35:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 4869 transitions. [2024-11-18 14:35:07,326 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 4869 transitions. Word has length 155 [2024-11-18 14:35:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:07,327 INFO L471 AbstractCegarLoop]: Abstraction has 3088 states and 4869 transitions. [2024-11-18 14:35:07,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 4869 transitions. [2024-11-18 14:35:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:07,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:07,331 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:07,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:35:07,331 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:07,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:07,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1372586871, now seen corresponding path program 1 times [2024-11-18 14:35:07,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:07,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920409842] [2024-11-18 14:35:07,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:07,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:07,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:07,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920409842] [2024-11-18 14:35:07,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920409842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:07,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:07,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630185349] [2024-11-18 14:35:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:07,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:07,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:07,529 INFO L87 Difference]: Start difference. First operand 3088 states and 4869 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:08,427 INFO L93 Difference]: Finished difference Result 9572 states and 15417 transitions. [2024-11-18 14:35:08,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:08,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 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 155 [2024-11-18 14:35:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:08,462 INFO L225 Difference]: With dead ends: 9572 [2024-11-18 14:35:08,463 INFO L226 Difference]: Without dead ends: 6502 [2024-11-18 14:35:08,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:35:08,475 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 979 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:08,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 2751 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:08,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6502 states. [2024-11-18 14:35:08,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6502 to 6279. [2024-11-18 14:35:08,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6279 states, 5782 states have (on average 1.5961604980975441) internal successors, (9229), 5849 states have internal predecessors, (9229), 328 states have call successors, (328), 102 states have call predecessors, (328), 168 states have return successors, (584), 343 states have call predecessors, (584), 328 states have call successors, (584) [2024-11-18 14:35:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6279 states to 6279 states and 10141 transitions. [2024-11-18 14:35:08,776 INFO L78 Accepts]: Start accepts. Automaton has 6279 states and 10141 transitions. Word has length 155 [2024-11-18 14:35:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:08,776 INFO L471 AbstractCegarLoop]: Abstraction has 6279 states and 10141 transitions. [2024-11-18 14:35:08,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:08,777 INFO L276 IsEmpty]: Start isEmpty. Operand 6279 states and 10141 transitions. [2024-11-18 14:35:08,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:08,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:08,781 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:08,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:35:08,782 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:08,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2047746997, now seen corresponding path program 1 times [2024-11-18 14:35:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:08,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80734449] [2024-11-18 14:35:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:08,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80734449] [2024-11-18 14:35:08,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80734449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:08,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:08,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:08,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445246155] [2024-11-18 14:35:08,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:08,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:08,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:08,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:08,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:08,932 INFO L87 Difference]: Start difference. First operand 6279 states and 10141 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:10,083 INFO L93 Difference]: Finished difference Result 20161 states and 33479 transitions. [2024-11-18 14:35:10,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:10,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 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 155 [2024-11-18 14:35:10,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:10,181 INFO L225 Difference]: With dead ends: 20161 [2024-11-18 14:35:10,181 INFO L226 Difference]: Without dead ends: 13900 [2024-11-18 14:35:10,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:35:10,209 INFO L432 NwaCegarLoop]: 672 mSDtfsCounter, 974 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:10,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 2739 Invalid, 980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13900 states. [2024-11-18 14:35:10,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13900 to 13552. [2024-11-18 14:35:10,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13552 states, 12509 states have (on average 1.6302662083300024) internal successors, (20393), 12722 states have internal predecessors, (20393), 632 states have call successors, (632), 198 states have call predecessors, (632), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2024-11-18 14:35:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13552 states to 13552 states and 22681 transitions. [2024-11-18 14:35:10,910 INFO L78 Accepts]: Start accepts. Automaton has 13552 states and 22681 transitions. Word has length 155 [2024-11-18 14:35:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:10,911 INFO L471 AbstractCegarLoop]: Abstraction has 13552 states and 22681 transitions. [2024-11-18 14:35:10,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 13552 states and 22681 transitions. [2024-11-18 14:35:10,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:10,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:10,920 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:10,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:35:10,921 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:10,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:10,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1099695031, now seen corresponding path program 1 times [2024-11-18 14:35:10,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:10,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142120481] [2024-11-18 14:35:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:10,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:11,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142120481] [2024-11-18 14:35:11,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142120481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:11,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:11,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:11,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329659721] [2024-11-18 14:35:11,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:11,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:11,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:11,083 INFO L87 Difference]: Start difference. First operand 13552 states and 22681 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:12,908 INFO L93 Difference]: Finished difference Result 44728 states and 77629 transitions. [2024-11-18 14:35:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:12,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 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 155 [2024-11-18 14:35:12,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:13,084 INFO L225 Difference]: With dead ends: 44728 [2024-11-18 14:35:13,085 INFO L226 Difference]: Without dead ends: 31194 [2024-11-18 14:35:13,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:35:13,150 INFO L432 NwaCegarLoop]: 669 mSDtfsCounter, 969 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:13,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 2727 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:13,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31194 states. [2024-11-18 14:35:14,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31194 to 30609. [2024-11-18 14:35:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30609 states, 28312 states have (on average 1.6685857586888952) internal successors, (47241), 28979 states have internal predecessors, (47241), 1240 states have call successors, (1240), 390 states have call predecessors, (1240), 1056 states have return successors, (5336), 1303 states have call predecessors, (5336), 1240 states have call successors, (5336) [2024-11-18 14:35:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30609 states to 30609 states and 53817 transitions. [2024-11-18 14:35:14,743 INFO L78 Accepts]: Start accepts. Automaton has 30609 states and 53817 transitions. Word has length 155 [2024-11-18 14:35:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:14,744 INFO L471 AbstractCegarLoop]: Abstraction has 30609 states and 53817 transitions. [2024-11-18 14:35:14,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 30609 states and 53817 transitions. [2024-11-18 14:35:14,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:14,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:14,759 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:14,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:35:14,759 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:14,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:14,760 INFO L85 PathProgramCache]: Analyzing trace with hash 514923381, now seen corresponding path program 1 times [2024-11-18 14:35:14,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:14,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434485667] [2024-11-18 14:35:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:14,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:14,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434485667] [2024-11-18 14:35:14,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434485667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:14,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:14,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:14,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053214306] [2024-11-18 14:35:14,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:14,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:14,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:14,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:14,908 INFO L87 Difference]: Start difference. First operand 30609 states and 53817 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:17,502 INFO L93 Difference]: Finished difference Result 103391 states and 190675 transitions. [2024-11-18 14:35:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:17,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 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 155 [2024-11-18 14:35:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:18,104 INFO L225 Difference]: With dead ends: 103391 [2024-11-18 14:35:18,106 INFO L226 Difference]: Without dead ends: 72800 [2024-11-18 14:35:18,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:35:18,213 INFO L432 NwaCegarLoop]: 666 mSDtfsCounter, 964 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:18,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 2715 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72800 states. [2024-11-18 14:35:21,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72800 to 71770. [2024-11-18 14:35:21,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71770 states, 66479 states have (on average 1.7079228026895712) internal successors, (113541), 68540 states have internal predecessors, (113541), 2456 states have call successors, (2456), 774 states have call predecessors, (2456), 2834 states have return successors, (18840), 2583 states have call predecessors, (18840), 2456 states have call successors, (18840) [2024-11-18 14:35:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71770 states to 71770 states and 134837 transitions. [2024-11-18 14:35:22,779 INFO L78 Accepts]: Start accepts. Automaton has 71770 states and 134837 transitions. Word has length 155 [2024-11-18 14:35:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:22,780 INFO L471 AbstractCegarLoop]: Abstraction has 71770 states and 134837 transitions. [2024-11-18 14:35:22,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 71770 states and 134837 transitions. [2024-11-18 14:35:22,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:22,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:22,803 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:22,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:35:22,804 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:22,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash 80417783, now seen corresponding path program 1 times [2024-11-18 14:35:22,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:22,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999079626] [2024-11-18 14:35:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:22,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:22,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:22,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999079626] [2024-11-18 14:35:22,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999079626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:22,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:22,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:22,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681296785] [2024-11-18 14:35:22,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:22,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:22,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:22,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:22,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:22,927 INFO L87 Difference]: Start difference. First operand 71770 states and 134837 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:35:28,844 INFO L93 Difference]: Finished difference Result 247386 states and 494897 transitions. [2024-11-18 14:35:28,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:35:28,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 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 155 [2024-11-18 14:35:28,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:35:30,108 INFO L225 Difference]: With dead ends: 247386 [2024-11-18 14:35:30,109 INFO L226 Difference]: Without dead ends: 175634 [2024-11-18 14:35:30,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:35:30,360 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 959 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:35:30,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 2703 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:35:30,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175634 states. [2024-11-18 14:35:39,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175634 to 173775. [2024-11-18 14:35:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173775 states, 161038 states have (on average 1.7453582384281972) internal successors, (281069), 167345 states have internal predecessors, (281069), 4888 states have call successors, (4888), 1542 states have call predecessors, (4888), 7848 states have return successors, (70424), 5143 states have call predecessors, (70424), 4888 states have call successors, (70424) [2024-11-18 14:35:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173775 states to 173775 states and 356381 transitions. [2024-11-18 14:35:41,474 INFO L78 Accepts]: Start accepts. Automaton has 173775 states and 356381 transitions. Word has length 155 [2024-11-18 14:35:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:35:41,475 INFO L471 AbstractCegarLoop]: Abstraction has 173775 states and 356381 transitions. [2024-11-18 14:35:41,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:35:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 173775 states and 356381 transitions. [2024-11-18 14:35:41,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:35:41,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:35:41,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:35:41,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:35:41,530 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:35:41,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:35:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash -349240523, now seen corresponding path program 1 times [2024-11-18 14:35:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:35:41,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886685645] [2024-11-18 14:35:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:35:41,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:35:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:35:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:35:41,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:35:41,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886685645] [2024-11-18 14:35:41,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886685645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:35:41,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:35:41,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:35:41,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541220646] [2024-11-18 14:35:41,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:35:41,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:35:41,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:35:41,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:35:41,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:35:41,684 INFO L87 Difference]: Start difference. First operand 173775 states and 356381 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)