./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/eca-rers2012/Problem03_label52.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 dadc4a7f56d2eeb12d7009442a875d9c494d437949017438f5005c98bfcd0bea --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 16:10:11,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 16:10:11,534 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 16:10:11,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 16:10:11,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 16:10:11,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 16:10:11,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 16:10:11,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 16:10:11,571 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 16:10:11,572 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 16:10:11,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 16:10:11,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 16:10:11,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 16:10:11,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 16:10:11,576 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 16:10:11,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 16:10:11,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 16:10:11,577 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 16:10:11,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 16:10:11,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 16:10:11,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 16:10:11,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 16:10:11,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 16:10:11,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 16:10:11,582 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 16:10:11,582 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 16:10:11,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 16:10:11,582 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 16:10:11,583 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 16:10:11,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 16:10:11,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 16:10:11,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 16:10:11,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 16:10:11,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 16:10:11,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 16:10:11,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 16:10:11,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 16:10:11,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 16:10:11,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 16:10:11,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 16:10:11,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 16:10:11,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 16:10:11,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dadc4a7f56d2eeb12d7009442a875d9c494d437949017438f5005c98bfcd0bea [2024-11-11 16:10:11,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 16:10:11,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 16:10:11,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 16:10:11,881 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 16:10:11,882 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 16:10:11,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label52.c [2024-11-11 16:10:13,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 16:10:13,706 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 16:10:13,708 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label52.c [2024-11-11 16:10:13,731 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee2384c1/f6458091d2cc482d899eabfa622abade/FLAG7ee1b7f03 [2024-11-11 16:10:13,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee2384c1/f6458091d2cc482d899eabfa622abade [2024-11-11 16:10:13,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 16:10:13,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 16:10:13,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 16:10:13,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 16:10:13,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 16:10:13,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 04:10:13" (1/1) ... [2024-11-11 16:10:13,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e731954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:13, skipping insertion in model container [2024-11-11 16:10:13,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 04:10:13" (1/1) ... [2024-11-11 16:10:13,834 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 16:10:14,297 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/eca-rers2012/Problem03_label52.c[53923,53936] [2024-11-11 16:10:14,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 16:10:14,351 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 16:10:14,517 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/eca-rers2012/Problem03_label52.c[53923,53936] [2024-11-11 16:10:14,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 16:10:14,581 INFO L204 MainTranslator]: Completed translation [2024-11-11 16:10:14,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14 WrapperNode [2024-11-11 16:10:14,582 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 16:10:14,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 16:10:14,583 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 16:10:14,583 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 16:10:14,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,706 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-11 16:10:14,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 16:10:14,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 16:10:14,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 16:10:14,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 16:10:14,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,777 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]. [2024-11-11 16:10:14,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 16:10:14,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 16:10:14,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 16:10:14,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 16:10:14,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (1/1) ... [2024-11-11 16:10:14,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 16:10:14,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:10:14,917 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) [2024-11-11 16:10:14,921 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 [2024-11-11 16:10:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 16:10:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 16:10:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 16:10:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 16:10:15,107 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 16:10:15,109 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 16:10:16,959 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-11 16:10:16,959 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 16:10:16,988 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 16:10:16,992 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-11 16:10:16,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 04:10:16 BoogieIcfgContainer [2024-11-11 16:10:16,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 16:10:16,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 16:10:16,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 16:10:16,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 16:10:16,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 04:10:13" (1/3) ... [2024-11-11 16:10:17,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ee2999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 04:10:16, skipping insertion in model container [2024-11-11 16:10:17,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:10:14" (2/3) ... [2024-11-11 16:10:17,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ee2999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 04:10:17, skipping insertion in model container [2024-11-11 16:10:17,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 04:10:16" (3/3) ... [2024-11-11 16:10:17,002 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label52.c [2024-11-11 16:10:17,021 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 16:10:17,021 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 16:10:17,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 16:10:17,106 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;@eb0a266, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 16:10:17,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 16:10:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-11 16:10:17,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:17,128 INFO L218 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] [2024-11-11 16:10:17,129 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:17,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:17,134 INFO L85 PathProgramCache]: Analyzing trace with hash 657543978, now seen corresponding path program 1 times [2024-11-11 16:10:17,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:17,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948475527] [2024-11-11 16:10:17,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:17,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:17,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948475527] [2024-11-11 16:10:17,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948475527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:17,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:17,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:10:17,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626687167] [2024-11-11 16:10:17,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:17,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:17,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:17,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:17,970 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:19,100 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2024-11-11 16:10:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:19,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-11 16:10:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:19,115 INFO L225 Difference]: With dead ends: 857 [2024-11-11 16:10:19,116 INFO L226 Difference]: Without dead ends: 462 [2024-11-11 16:10:19,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:19,123 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 142 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:19,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 187 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-11 16:10:19,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-11 16:10:19,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2024-11-11 16:10:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2024-11-11 16:10:19,184 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 146 [2024-11-11 16:10:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:19,185 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2024-11-11 16:10:19,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:19,185 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2024-11-11 16:10:19,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-11 16:10:19,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:19,189 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:19,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 16:10:19,189 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:19,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:19,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1092853513, now seen corresponding path program 1 times [2024-11-11 16:10:19,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:19,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629088511] [2024-11-11 16:10:19,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:19,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:19,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:19,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629088511] [2024-11-11 16:10:19,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629088511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:19,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:19,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:10:19,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929319977] [2024-11-11 16:10:19,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:19,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:19,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:19,488 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:20,260 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2024-11-11 16:10:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:20,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2024-11-11 16:10:20,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:20,264 INFO L225 Difference]: With dead ends: 1344 [2024-11-11 16:10:20,264 INFO L226 Difference]: Without dead ends: 886 [2024-11-11 16:10:20,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:20,268 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:20,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 16:10:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-11 16:10:20,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2024-11-11 16:10:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5132336018411967) internal successors, (1315), 869 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1315 transitions. [2024-11-11 16:10:20,309 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1315 transitions. Word has length 154 [2024-11-11 16:10:20,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:20,310 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1315 transitions. [2024-11-11 16:10:20,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:20,310 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1315 transitions. [2024-11-11 16:10:20,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-11 16:10:20,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:20,314 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:20,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 16:10:20,315 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:20,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:20,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1230218740, now seen corresponding path program 1 times [2024-11-11 16:10:20,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:20,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289893435] [2024-11-11 16:10:20,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:20,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 16:10:20,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:20,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289893435] [2024-11-11 16:10:20,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289893435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:20,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:20,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:10:20,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753727499] [2024-11-11 16:10:20,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:20,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:20,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:20,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:20,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:20,673 INFO L87 Difference]: Start difference. First operand 870 states and 1315 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:21,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:21,486 INFO L93 Difference]: Finished difference Result 2559 states and 3882 transitions. [2024-11-11 16:10:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:21,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-11 16:10:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:21,495 INFO L225 Difference]: With dead ends: 2559 [2024-11-11 16:10:21,496 INFO L226 Difference]: Without dead ends: 1691 [2024-11-11 16:10:21,499 INFO L434 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 [2024-11-11 16:10:21,500 INFO L435 NwaCegarLoop]: 372 mSDtfsCounter, 104 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:21,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 402 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 16:10:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2024-11-11 16:10:21,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1685. [2024-11-11 16:10:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 1.4388361045130642) internal successors, (2423), 1684 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2423 transitions. [2024-11-11 16:10:21,556 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2423 transitions. Word has length 161 [2024-11-11 16:10:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:21,558 INFO L471 AbstractCegarLoop]: Abstraction has 1685 states and 2423 transitions. [2024-11-11 16:10:21,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:21,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2423 transitions. [2024-11-11 16:10:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-11 16:10:21,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:21,567 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:21,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 16:10:21,568 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:21,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1453208832, now seen corresponding path program 1 times [2024-11-11 16:10:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:21,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924522329] [2024-11-11 16:10:21,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 16:10:21,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:21,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924522329] [2024-11-11 16:10:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924522329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:21,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:21,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:10:21,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946849127] [2024-11-11 16:10:21,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:21,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:21,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:21,964 INFO L87 Difference]: Start difference. First operand 1685 states and 2423 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:22,773 INFO L93 Difference]: Finished difference Result 4192 states and 5968 transitions. [2024-11-11 16:10:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:22,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-11-11 16:10:22,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:22,783 INFO L225 Difference]: With dead ends: 4192 [2024-11-11 16:10:22,784 INFO L226 Difference]: Without dead ends: 2509 [2024-11-11 16:10:22,790 INFO L434 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 [2024-11-11 16:10:22,791 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:22,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 407 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 16:10:22,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2024-11-11 16:10:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2505. [2024-11-11 16:10:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2504 states have (on average 1.3857827476038338) internal successors, (3470), 2504 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3470 transitions. [2024-11-11 16:10:22,846 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3470 transitions. Word has length 167 [2024-11-11 16:10:22,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:22,847 INFO L471 AbstractCegarLoop]: Abstraction has 2505 states and 3470 transitions. [2024-11-11 16:10:22,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:22,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3470 transitions. [2024-11-11 16:10:22,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-11 16:10:22,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:22,853 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:22,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-11 16:10:22,853 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:22,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:22,854 INFO L85 PathProgramCache]: Analyzing trace with hash 343754573, now seen corresponding path program 1 times [2024-11-11 16:10:22,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:22,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230199722] [2024-11-11 16:10:22,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:22,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230199722] [2024-11-11 16:10:23,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230199722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:23,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:23,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:10:23,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935685386] [2024-11-11 16:10:23,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:23,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:23,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:23,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:23,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:23,104 INFO L87 Difference]: Start difference. First operand 2505 states and 3470 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:23,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:23,918 INFO L93 Difference]: Finished difference Result 7464 states and 10343 transitions. [2024-11-11 16:10:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:23,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-11-11 16:10:23,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:23,938 INFO L225 Difference]: With dead ends: 7464 [2024-11-11 16:10:23,938 INFO L226 Difference]: Without dead ends: 4961 [2024-11-11 16:10:23,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:23,946 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 241 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:23,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 156 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 16:10:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4961 states. [2024-11-11 16:10:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4961 to 4958. [2024-11-11 16:10:24,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4958 states, 4957 states have (on average 1.333266088359895) internal successors, (6609), 4957 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4958 states to 4958 states and 6609 transitions. [2024-11-11 16:10:24,048 INFO L78 Accepts]: Start accepts. Automaton has 4958 states and 6609 transitions. Word has length 169 [2024-11-11 16:10:24,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:24,048 INFO L471 AbstractCegarLoop]: Abstraction has 4958 states and 6609 transitions. [2024-11-11 16:10:24,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:24,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4958 states and 6609 transitions. [2024-11-11 16:10:24,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-11 16:10:24,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:24,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:24,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-11 16:10:24,057 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:24,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:24,058 INFO L85 PathProgramCache]: Analyzing trace with hash 621189392, now seen corresponding path program 1 times [2024-11-11 16:10:24,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:24,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845997782] [2024-11-11 16:10:24,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:24,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:24,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:24,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845997782] [2024-11-11 16:10:24,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845997782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:24,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:24,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:10:24,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557848129] [2024-11-11 16:10:24,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:24,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:24,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:24,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:24,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:24,332 INFO L87 Difference]: Start difference. First operand 4958 states and 6609 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:25,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:25,107 INFO L93 Difference]: Finished difference Result 12402 states and 16491 transitions. [2024-11-11 16:10:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:25,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2024-11-11 16:10:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:25,142 INFO L225 Difference]: With dead ends: 12402 [2024-11-11 16:10:25,144 INFO L226 Difference]: Without dead ends: 7446 [2024-11-11 16:10:25,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:25,154 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 222 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:25,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 131 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 16:10:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7446 states. [2024-11-11 16:10:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7446 to 7441. [2024-11-11 16:10:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7441 states, 7440 states have (on average 1.3233870967741936) internal successors, (9846), 7440 states have internal predecessors, (9846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7441 states to 7441 states and 9846 transitions. [2024-11-11 16:10:25,351 INFO L78 Accepts]: Start accepts. Automaton has 7441 states and 9846 transitions. Word has length 174 [2024-11-11 16:10:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:25,351 INFO L471 AbstractCegarLoop]: Abstraction has 7441 states and 9846 transitions. [2024-11-11 16:10:25,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 7441 states and 9846 transitions. [2024-11-11 16:10:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-11 16:10:25,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:25,363 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:25,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-11 16:10:25,364 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:25,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:25,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1533082747, now seen corresponding path program 1 times [2024-11-11 16:10:25,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:25,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719419733] [2024-11-11 16:10:25,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:25,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:25,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:25,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719419733] [2024-11-11 16:10:25,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719419733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:10:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535115845] [2024-11-11 16:10:25,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:25,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:10:25,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:10:25,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:10:25,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 16:10:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:25,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 16:10:25,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:10:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 16:10:26,139 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:10:26,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535115845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:26,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:10:26,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-11 16:10:26,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607525700] [2024-11-11 16:10:26,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:26,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:26,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:26,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:10:26,142 INFO L87 Difference]: Start difference. First operand 7441 states and 9846 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:26,866 INFO L93 Difference]: Finished difference Result 21991 states and 29091 transitions. [2024-11-11 16:10:26,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:26,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-11-11 16:10:26,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:26,906 INFO L225 Difference]: With dead ends: 21991 [2024-11-11 16:10:26,907 INFO L226 Difference]: Without dead ends: 14552 [2024-11-11 16:10:26,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:10:26,922 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 90 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:26,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 419 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 16:10:26,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14552 states. [2024-11-11 16:10:27,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14552 to 14546. [2024-11-11 16:10:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14546 states, 14545 states have (on average 1.2149192162255071) internal successors, (17671), 14545 states have internal predecessors, (17671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14546 states to 14546 states and 17671 transitions. [2024-11-11 16:10:27,267 INFO L78 Accepts]: Start accepts. Automaton has 14546 states and 17671 transitions. Word has length 181 [2024-11-11 16:10:27,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:27,267 INFO L471 AbstractCegarLoop]: Abstraction has 14546 states and 17671 transitions. [2024-11-11 16:10:27,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 14546 states and 17671 transitions. [2024-11-11 16:10:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-11 16:10:27,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:27,285 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:27,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 16:10:27,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:10:27,486 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:27,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:27,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1401996613, now seen corresponding path program 1 times [2024-11-11 16:10:27,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:27,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188894114] [2024-11-11 16:10:27,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:27,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 16:10:27,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:27,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188894114] [2024-11-11 16:10:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188894114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:27,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:27,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:10:27,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754138395] [2024-11-11 16:10:27,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:27,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:27,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:27,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:27,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:27,776 INFO L87 Difference]: Start difference. First operand 14546 states and 17671 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:28,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:28,755 INFO L93 Difference]: Finished difference Result 36845 states and 44730 transitions. [2024-11-11 16:10:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:28,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2024-11-11 16:10:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:28,801 INFO L225 Difference]: With dead ends: 36845 [2024-11-11 16:10:28,805 INFO L226 Difference]: Without dead ends: 22301 [2024-11-11 16:10:28,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:28,834 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 204 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:28,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 156 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 16:10:28,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22301 states. [2024-11-11 16:10:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22301 to 22299. [2024-11-11 16:10:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22299 states, 22298 states have (on average 1.190644900887972) internal successors, (26549), 22298 states have internal predecessors, (26549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:29,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22299 states to 22299 states and 26549 transitions. [2024-11-11 16:10:29,379 INFO L78 Accepts]: Start accepts. Automaton has 22299 states and 26549 transitions. Word has length 193 [2024-11-11 16:10:29,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:29,380 INFO L471 AbstractCegarLoop]: Abstraction has 22299 states and 26549 transitions. [2024-11-11 16:10:29,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand 22299 states and 26549 transitions. [2024-11-11 16:10:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-11 16:10:29,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:29,407 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:29,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-11 16:10:29,407 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:29,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:29,408 INFO L85 PathProgramCache]: Analyzing trace with hash 562174970, now seen corresponding path program 1 times [2024-11-11 16:10:29,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:29,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305529547] [2024-11-11 16:10:29,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:29,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 16:10:29,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305529547] [2024-11-11 16:10:29,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305529547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:29,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:29,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:10:29,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773346075] [2024-11-11 16:10:29,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:29,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:29,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:29,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:29,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:29,610 INFO L87 Difference]: Start difference. First operand 22299 states and 26549 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:30,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:30,115 INFO L93 Difference]: Finished difference Result 64823 states and 77291 transitions. [2024-11-11 16:10:30,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:30,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2024-11-11 16:10:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:30,193 INFO L225 Difference]: With dead ends: 64823 [2024-11-11 16:10:30,193 INFO L226 Difference]: Without dead ends: 42526 [2024-11-11 16:10:30,225 INFO L434 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 [2024-11-11 16:10:30,227 INFO L435 NwaCegarLoop]: 653 mSDtfsCounter, 332 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:30,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 948 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 16:10:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42526 states. [2024-11-11 16:10:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42526 to 42522. [2024-11-11 16:10:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42522 states, 42521 states have (on average 1.1770419322217258) internal successors, (50049), 42521 states have internal predecessors, (50049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42522 states to 42522 states and 50049 transitions. [2024-11-11 16:10:31,154 INFO L78 Accepts]: Start accepts. Automaton has 42522 states and 50049 transitions. Word has length 200 [2024-11-11 16:10:31,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:31,154 INFO L471 AbstractCegarLoop]: Abstraction has 42522 states and 50049 transitions. [2024-11-11 16:10:31,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 42522 states and 50049 transitions. [2024-11-11 16:10:31,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-11 16:10:31,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:31,195 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:31,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-11 16:10:31,196 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:31,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:31,197 INFO L85 PathProgramCache]: Analyzing trace with hash -775382883, now seen corresponding path program 2 times [2024-11-11 16:10:31,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:31,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77371371] [2024-11-11 16:10:31,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:31,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-11 16:10:31,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77371371] [2024-11-11 16:10:31,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77371371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:31,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:31,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:10:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044728676] [2024-11-11 16:10:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:31,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:31,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:31,466 INFO L87 Difference]: Start difference. First operand 42522 states and 50049 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:32,547 INFO L93 Difference]: Finished difference Result 83161 states and 97704 transitions. [2024-11-11 16:10:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:32,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-11-11 16:10:32,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:32,634 INFO L225 Difference]: With dead ends: 83161 [2024-11-11 16:10:32,634 INFO L226 Difference]: Without dead ends: 40641 [2024-11-11 16:10:32,676 INFO L434 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 [2024-11-11 16:10:32,677 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 277 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:32,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 385 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 16:10:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40641 states. [2024-11-11 16:10:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40641 to 40637. [2024-11-11 16:10:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40637 states, 40636 states have (on average 1.1377350132887096) internal successors, (46233), 40636 states have internal predecessors, (46233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40637 states to 40637 states and 46233 transitions. [2024-11-11 16:10:33,403 INFO L78 Accepts]: Start accepts. Automaton has 40637 states and 46233 transitions. Word has length 207 [2024-11-11 16:10:33,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:33,404 INFO L471 AbstractCegarLoop]: Abstraction has 40637 states and 46233 transitions. [2024-11-11 16:10:33,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 40637 states and 46233 transitions. [2024-11-11 16:10:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-11 16:10:33,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:33,437 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:33,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-11 16:10:33,438 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:33,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:33,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1742331789, now seen corresponding path program 1 times [2024-11-11 16:10:33,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:33,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506107102] [2024-11-11 16:10:33,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:33,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-11 16:10:33,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:33,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506107102] [2024-11-11 16:10:33,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506107102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:33,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:33,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:10:33,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565099117] [2024-11-11 16:10:33,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:33,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:33,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:33,899 INFO L87 Difference]: Start difference. First operand 40637 states and 46233 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:34,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:34,846 INFO L93 Difference]: Finished difference Result 95076 states and 109249 transitions. [2024-11-11 16:10:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:34,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-11 16:10:34,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:34,940 INFO L225 Difference]: With dead ends: 95076 [2024-11-11 16:10:34,941 INFO L226 Difference]: Without dead ends: 54441 [2024-11-11 16:10:35,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:35,090 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 178 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:35,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 199 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 16:10:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54441 states. [2024-11-11 16:10:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54441 to 54441. [2024-11-11 16:10:35,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54441 states, 54440 states have (on average 1.1151359294636296) internal successors, (60708), 54440 states have internal predecessors, (60708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54441 states to 54441 states and 60708 transitions. [2024-11-11 16:10:35,867 INFO L78 Accepts]: Start accepts. Automaton has 54441 states and 60708 transitions. Word has length 216 [2024-11-11 16:10:35,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:35,867 INFO L471 AbstractCegarLoop]: Abstraction has 54441 states and 60708 transitions. [2024-11-11 16:10:35,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 54441 states and 60708 transitions. [2024-11-11 16:10:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-11 16:10:35,898 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:35,898 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:35,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-11 16:10:35,899 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:35,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2061399050, now seen corresponding path program 1 times [2024-11-11 16:10:35,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:35,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982430612] [2024-11-11 16:10:35,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:35,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:36,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:36,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982430612] [2024-11-11 16:10:36,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982430612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:10:36,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411165324] [2024-11-11 16:10:36,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:36,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:10:36,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:10:36,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:10:36,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 16:10:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:36,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 16:10:36,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:10:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:36,857 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:10:36,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411165324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:36,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:10:36,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-11 16:10:36,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918147070] [2024-11-11 16:10:36,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:36,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:36,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:36,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:36,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:10:36,859 INFO L87 Difference]: Start difference. First operand 54441 states and 60708 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:37,764 INFO L93 Difference]: Finished difference Result 107492 states and 119764 transitions. [2024-11-11 16:10:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2024-11-11 16:10:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:37,849 INFO L225 Difference]: With dead ends: 107492 [2024-11-11 16:10:37,849 INFO L226 Difference]: Without dead ends: 53053 [2024-11-11 16:10:37,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:10:37,888 INFO L435 NwaCegarLoop]: 393 mSDtfsCounter, 92 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:37,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 415 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 16:10:37,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53053 states. [2024-11-11 16:10:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53053 to 53017. [2024-11-11 16:10:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53017 states, 53016 states have (on average 1.1097781801720235) internal successors, (58836), 53016 states have internal predecessors, (58836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53017 states to 53017 states and 58836 transitions. [2024-11-11 16:10:38,771 INFO L78 Accepts]: Start accepts. Automaton has 53017 states and 58836 transitions. Word has length 220 [2024-11-11 16:10:38,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:38,771 INFO L471 AbstractCegarLoop]: Abstraction has 53017 states and 58836 transitions. [2024-11-11 16:10:38,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 53017 states and 58836 transitions. [2024-11-11 16:10:38,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-11 16:10:38,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:38,797 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:38,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 16:10:38,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-11 16:10:38,998 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:38,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:38,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1429396155, now seen corresponding path program 1 times [2024-11-11 16:10:38,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:38,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959438344] [2024-11-11 16:10:38,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:39,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:39,348 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 16:10:39,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:39,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959438344] [2024-11-11 16:10:39,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959438344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:39,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:39,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:10:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445624525] [2024-11-11 16:10:39,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:39,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:39,352 INFO L87 Difference]: Start difference. First operand 53017 states and 58836 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:40,597 INFO L93 Difference]: Finished difference Result 120914 states and 134815 transitions. [2024-11-11 16:10:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:40,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-11-11 16:10:40,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:40,679 INFO L225 Difference]: With dead ends: 120914 [2024-11-11 16:10:40,679 INFO L226 Difference]: Without dead ends: 67899 [2024-11-11 16:10:40,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:40,704 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 170 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:40,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 222 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 16:10:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67899 states. [2024-11-11 16:10:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67899 to 63375. [2024-11-11 16:10:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63375 states, 63374 states have (on average 1.1205699498216934) internal successors, (71015), 63374 states have internal predecessors, (71015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63375 states to 63375 states and 71015 transitions. [2024-11-11 16:10:41,496 INFO L78 Accepts]: Start accepts. Automaton has 63375 states and 71015 transitions. Word has length 227 [2024-11-11 16:10:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:41,496 INFO L471 AbstractCegarLoop]: Abstraction has 63375 states and 71015 transitions. [2024-11-11 16:10:41,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 63375 states and 71015 transitions. [2024-11-11 16:10:41,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-11 16:10:41,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:41,532 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:41,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-11 16:10:41,532 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:41,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1310461643, now seen corresponding path program 1 times [2024-11-11 16:10:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:41,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735418569] [2024-11-11 16:10:41,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:41,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:42,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:42,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735418569] [2024-11-11 16:10:42,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735418569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:42,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:42,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:10:42,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446115741] [2024-11-11 16:10:42,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:42,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:10:42,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:42,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:10:42,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 16:10:42,145 INFO L87 Difference]: Start difference. First operand 63375 states and 71015 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:43,357 INFO L93 Difference]: Finished difference Result 135533 states and 151862 transitions. [2024-11-11 16:10:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 16:10:43,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2024-11-11 16:10:43,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:43,433 INFO L225 Difference]: With dead ends: 135533 [2024-11-11 16:10:43,433 INFO L226 Difference]: Without dead ends: 72160 [2024-11-11 16:10:43,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 16:10:43,475 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 357 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:43,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 168 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-11 16:10:43,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72160 states. [2024-11-11 16:10:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72160 to 69697. [2024-11-11 16:10:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69697 states, 69696 states have (on average 1.1186868686868687) internal successors, (77968), 69696 states have internal predecessors, (77968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:44,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69697 states to 69697 states and 77968 transitions. [2024-11-11 16:10:44,649 INFO L78 Accepts]: Start accepts. Automaton has 69697 states and 77968 transitions. Word has length 248 [2024-11-11 16:10:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:44,650 INFO L471 AbstractCegarLoop]: Abstraction has 69697 states and 77968 transitions. [2024-11-11 16:10:44,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:44,650 INFO L276 IsEmpty]: Start isEmpty. Operand 69697 states and 77968 transitions. [2024-11-11 16:10:45,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-11 16:10:45,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:45,006 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:45,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-11 16:10:45,006 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:45,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1889943752, now seen corresponding path program 1 times [2024-11-11 16:10:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:45,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849550990] [2024-11-11 16:10:45,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:45,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 121 proven. 6 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-11 16:10:45,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:45,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849550990] [2024-11-11 16:10:45,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849550990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:10:45,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492575896] [2024-11-11 16:10:45,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:45,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:10:45,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:10:45,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:10:45,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 16:10:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:45,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 16:10:45,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:10:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-11 16:10:45,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:10:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492575896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:10:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-11 16:10:45,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53749442] [2024-11-11 16:10:45,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:45,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:45,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:45,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:45,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:10:45,691 INFO L87 Difference]: Start difference. First operand 69697 states and 77968 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:46,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:46,469 INFO L93 Difference]: Finished difference Result 192319 states and 214993 transitions. [2024-11-11 16:10:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:46,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2024-11-11 16:10:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:46,609 INFO L225 Difference]: With dead ends: 192319 [2024-11-11 16:10:46,609 INFO L226 Difference]: Without dead ends: 122624 [2024-11-11 16:10:46,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:10:46,656 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 303 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:46,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 878 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 16:10:46,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122624 states. [2024-11-11 16:10:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122624 to 117733. [2024-11-11 16:10:47,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117733 states, 117732 states have (on average 1.1090357761696055) internal successors, (130569), 117732 states have internal predecessors, (130569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117733 states to 117733 states and 130569 transitions. [2024-11-11 16:10:48,553 INFO L78 Accepts]: Start accepts. Automaton has 117733 states and 130569 transitions. Word has length 251 [2024-11-11 16:10:48,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:48,553 INFO L471 AbstractCegarLoop]: Abstraction has 117733 states and 130569 transitions. [2024-11-11 16:10:48,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:48,554 INFO L276 IsEmpty]: Start isEmpty. Operand 117733 states and 130569 transitions. [2024-11-11 16:10:48,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-11 16:10:48,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:48,594 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:48,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-11 16:10:48,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:10:48,795 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:48,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash -568790229, now seen corresponding path program 1 times [2024-11-11 16:10:48,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:48,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584513711] [2024-11-11 16:10:48,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 127 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-11 16:10:49,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:49,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584513711] [2024-11-11 16:10:49,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584513711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:10:49,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510885114] [2024-11-11 16:10:49,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:49,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:10:49,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:10:49,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:10:49,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 16:10:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:49,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 16:10:49,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:10:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-11 16:10:49,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:10:49,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510885114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:49,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:10:49,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-11 16:10:49,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959002719] [2024-11-11 16:10:49,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:49,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:49,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:49,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:10:49,698 INFO L87 Difference]: Start difference. First operand 117733 states and 130569 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:51,051 INFO L93 Difference]: Finished difference Result 235455 states and 261119 transitions. [2024-11-11 16:10:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:51,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-11-11 16:10:51,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:51,204 INFO L225 Difference]: With dead ends: 235455 [2024-11-11 16:10:51,204 INFO L226 Difference]: Without dead ends: 117724 [2024-11-11 16:10:51,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:10:51,276 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 123 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:51,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 342 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 16:10:51,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117724 states. [2024-11-11 16:10:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117724 to 116500. [2024-11-11 16:10:52,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116500 states, 116499 states have (on average 1.102472982600709) internal successors, (128437), 116499 states have internal predecessors, (128437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116500 states to 116500 states and 128437 transitions. [2024-11-11 16:10:53,399 INFO L78 Accepts]: Start accepts. Automaton has 116500 states and 128437 transitions. Word has length 253 [2024-11-11 16:10:53,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:53,400 INFO L471 AbstractCegarLoop]: Abstraction has 116500 states and 128437 transitions. [2024-11-11 16:10:53,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand 116500 states and 128437 transitions. [2024-11-11 16:10:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-11 16:10:53,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:53,456 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:53,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-11 16:10:53,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-11 16:10:53,658 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:53,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash -914918116, now seen corresponding path program 1 times [2024-11-11 16:10:53,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:53,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495095185] [2024-11-11 16:10:53,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:53,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:54,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:54,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495095185] [2024-11-11 16:10:54,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495095185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:54,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:10:54,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:10:54,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306881759] [2024-11-11 16:10:54,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:54,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:10:54,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:54,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:10:54,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:54,044 INFO L87 Difference]: Start difference. First operand 116500 states and 128437 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:10:55,552 INFO L93 Difference]: Finished difference Result 248660 states and 273939 transitions. [2024-11-11 16:10:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:10:55,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2024-11-11 16:10:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:10:55,740 INFO L225 Difference]: With dead ends: 248660 [2024-11-11 16:10:55,740 INFO L226 Difference]: Without dead ends: 132162 [2024-11-11 16:10:55,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:10:55,815 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 95 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 16:10:55,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 203 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 16:10:55,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132162 states. [2024-11-11 16:10:57,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132162 to 131316. [2024-11-11 16:10:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131316 states, 131315 states have (on average 1.0876518295701176) internal successors, (142825), 131315 states have internal predecessors, (142825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131316 states to 131316 states and 142825 transitions. [2024-11-11 16:10:57,714 INFO L78 Accepts]: Start accepts. Automaton has 131316 states and 142825 transitions. Word has length 276 [2024-11-11 16:10:57,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:10:57,714 INFO L471 AbstractCegarLoop]: Abstraction has 131316 states and 142825 transitions. [2024-11-11 16:10:57,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:10:57,714 INFO L276 IsEmpty]: Start isEmpty. Operand 131316 states and 142825 transitions. [2024-11-11 16:10:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-11 16:10:57,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:10:57,762 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:10:57,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-11 16:10:57,763 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:10:57,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:10:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1697126471, now seen corresponding path program 1 times [2024-11-11 16:10:57,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:10:57,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309953123] [2024-11-11 16:10:57,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:57,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:10:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:58,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:10:58,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309953123] [2024-11-11 16:10:58,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309953123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:10:58,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533274155] [2024-11-11 16:10:58,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:10:58,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:10:58,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:10:58,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:10:58,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 16:10:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:10:58,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 16:10:59,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:10:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:10:59,325 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:10:59,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533274155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:10:59,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:10:59,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-11 16:10:59,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931329808] [2024-11-11 16:10:59,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:10:59,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:10:59,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:10:59,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:10:59,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:10:59,327 INFO L87 Difference]: Start difference. First operand 131316 states and 142825 transitions. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:11:01,118 INFO L93 Difference]: Finished difference Result 273825 states and 298662 transitions. [2024-11-11 16:11:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 16:11:01,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2024-11-11 16:11:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:11:01,294 INFO L225 Difference]: With dead ends: 273825 [2024-11-11 16:11:01,295 INFO L226 Difference]: Without dead ends: 142511 [2024-11-11 16:11:01,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:11:01,378 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 355 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-11 16:11:01,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 171 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-11 16:11:01,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142511 states. [2024-11-11 16:11:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142511 to 130882. [2024-11-11 16:11:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130882 states, 130881 states have (on average 1.0727760331904554) internal successors, (140406), 130881 states have internal predecessors, (140406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130882 states to 130882 states and 140406 transitions. [2024-11-11 16:11:03,980 INFO L78 Accepts]: Start accepts. Automaton has 130882 states and 140406 transitions. Word has length 283 [2024-11-11 16:11:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:11:03,984 INFO L471 AbstractCegarLoop]: Abstraction has 130882 states and 140406 transitions. [2024-11-11 16:11:03,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 130882 states and 140406 transitions. [2024-11-11 16:11:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-11 16:11:04,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:11:04,126 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:11:04,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 16:11:04,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-11 16:11:04,327 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:11:04,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:11:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1571528202, now seen corresponding path program 1 times [2024-11-11 16:11:04,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:11:04,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932755265] [2024-11-11 16:11:04,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:11:04,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:11:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:11:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 153 proven. 6 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-11 16:11:04,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:11:04,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932755265] [2024-11-11 16:11:04,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932755265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:11:04,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223939959] [2024-11-11 16:11:04,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:11:04,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:11:04,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:11:04,678 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:11:04,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 16:11:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:11:04,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 16:11:04,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:11:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-11 16:11:04,888 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:11:04,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223939959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:11:04,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:11:04,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-11 16:11:04,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398715202] [2024-11-11 16:11:04,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:11:04,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:11:04,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:11:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:11:04,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:11:04,890 INFO L87 Difference]: Start difference. First operand 130882 states and 140406 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:05,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:11:05,937 INFO L93 Difference]: Finished difference Result 246970 states and 265131 transitions. [2024-11-11 16:11:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:11:05,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2024-11-11 16:11:05,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:11:06,062 INFO L225 Difference]: With dead ends: 246970 [2024-11-11 16:11:06,062 INFO L226 Difference]: Without dead ends: 116090 [2024-11-11 16:11:06,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:11:06,111 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 16:11:06,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 16:11:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116090 states. [2024-11-11 16:11:07,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116090 to 114060. [2024-11-11 16:11:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114060 states, 114059 states have (on average 1.0699374884927977) internal successors, (122036), 114059 states have internal predecessors, (122036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114060 states to 114060 states and 122036 transitions. [2024-11-11 16:11:07,569 INFO L78 Accepts]: Start accepts. Automaton has 114060 states and 122036 transitions. Word has length 289 [2024-11-11 16:11:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:11:07,569 INFO L471 AbstractCegarLoop]: Abstraction has 114060 states and 122036 transitions. [2024-11-11 16:11:07,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand 114060 states and 122036 transitions. [2024-11-11 16:11:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-11 16:11:07,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:11:07,600 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:11:07,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-11 16:11:07,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:11:07,801 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:11:07,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:11:07,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1300233773, now seen corresponding path program 1 times [2024-11-11 16:11:07,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:11:07,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519231938] [2024-11-11 16:11:07,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:11:07,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:11:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:11:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-11 16:11:08,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:11:08,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519231938] [2024-11-11 16:11:08,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519231938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:11:08,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674537873] [2024-11-11 16:11:08,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:11:08,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:11:08,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:11:08,581 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:11:08,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 16:11:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:11:08,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 16:11:08,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:11:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 16:11:08,899 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:11:08,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674537873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:11:08,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:11:08,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-11 16:11:08,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335308433] [2024-11-11 16:11:08,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:11:08,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:11:08,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:11:08,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:11:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:11:08,902 INFO L87 Difference]: Start difference. First operand 114060 states and 122036 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:11:10,061 INFO L93 Difference]: Finished difference Result 214904 states and 229506 transitions. [2024-11-11 16:11:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:11:10,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2024-11-11 16:11:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:11:10,190 INFO L225 Difference]: With dead ends: 214904 [2024-11-11 16:11:10,190 INFO L226 Difference]: Without dead ends: 100846 [2024-11-11 16:11:10,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:11:10,258 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 121 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 16:11:10,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 310 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 16:11:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100846 states. [2024-11-11 16:11:11,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100846 to 91909. [2024-11-11 16:11:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91909 states, 91908 states have (on average 1.0541519780650215) internal successors, (96885), 91908 states have internal predecessors, (96885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91909 states to 91909 states and 96885 transitions. [2024-11-11 16:11:11,571 INFO L78 Accepts]: Start accepts. Automaton has 91909 states and 96885 transitions. Word has length 311 [2024-11-11 16:11:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:11:11,571 INFO L471 AbstractCegarLoop]: Abstraction has 91909 states and 96885 transitions. [2024-11-11 16:11:11,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 91909 states and 96885 transitions. [2024-11-11 16:11:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-11 16:11:11,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:11:11,601 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:11:11,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-11 16:11:11,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:11:11,802 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:11:11,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:11:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash 400304536, now seen corresponding path program 1 times [2024-11-11 16:11:11,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:11:11,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121240130] [2024-11-11 16:11:11,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:11:11,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:11:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:11:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-11 16:11:12,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:11:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121240130] [2024-11-11 16:11:12,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121240130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:11:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144509302] [2024-11-11 16:11:12,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:11:12,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:11:12,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:11:12,600 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:11:12,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 16:11:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:11:12,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 16:11:12,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:11:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-11 16:11:12,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:11:12,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144509302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:11:12,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:11:12,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-11 16:11:12,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885472007] [2024-11-11 16:11:12,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:11:12,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:11:12,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:11:12,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:11:12,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:11:12,931 INFO L87 Difference]: Start difference. First operand 91909 states and 96885 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:11:13,800 INFO L93 Difference]: Finished difference Result 185665 states and 195535 transitions. [2024-11-11 16:11:13,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:11:13,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2024-11-11 16:11:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:11:14,238 INFO L225 Difference]: With dead ends: 185665 [2024-11-11 16:11:14,238 INFO L226 Difference]: Without dead ends: 93758 [2024-11-11 16:11:14,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:11:14,278 INFO L435 NwaCegarLoop]: 318 mSDtfsCounter, 88 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 16:11:14,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 343 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 16:11:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93758 states. [2024-11-11 16:11:15,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93758 to 91697. [2024-11-11 16:11:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91697 states, 91696 states have (on average 1.0502421043447916) internal successors, (96303), 91696 states have internal predecessors, (96303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91697 states to 91697 states and 96303 transitions. [2024-11-11 16:11:15,590 INFO L78 Accepts]: Start accepts. Automaton has 91697 states and 96303 transitions. Word has length 317 [2024-11-11 16:11:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:11:15,590 INFO L471 AbstractCegarLoop]: Abstraction has 91697 states and 96303 transitions. [2024-11-11 16:11:15,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:11:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 91697 states and 96303 transitions. [2024-11-11 16:11:15,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-11 16:11:15,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:11:15,630 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:11:15,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-11 16:11:15,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-11 16:11:15,831 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:11:15,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:11:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2012699548, now seen corresponding path program 1 times [2024-11-11 16:11:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:11:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971831140] [2024-11-11 16:11:15,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:11:15,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:11:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:11:16,296 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-11 16:11:16,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:11:16,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971831140] [2024-11-11 16:11:16,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971831140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:11:16,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639814444] [2024-11-11 16:11:16,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:11:16,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:11:16,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:11:16,299 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:11:16,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-11 16:11:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:11:16,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 16:11:16,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:11:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-11 16:11:16,583 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:11:16,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639814444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:11:16,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:11:16,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-11 16:11:16,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945717610] [2024-11-11 16:11:16,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:11:16,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:11:16,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:11:16,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:11:16,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:11:16,585 INFO L87 Difference]: Start difference. First operand 91697 states and 96303 transitions. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)