./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 00:10:47,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 00:10:47,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 00:10:47,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 00:10:47,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 00:10:47,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 00:10:47,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 00:10:47,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 00:10:47,638 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 00:10:47,639 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 00:10:47,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 00:10:47,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 00:10:47,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 00:10:47,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 00:10:47,645 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 00:10:47,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 00:10:47,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 00:10:47,646 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 00:10:47,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 00:10:47,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 00:10:47,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 00:10:47,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 00:10:47,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 00:10:47,648 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 00:10:47,648 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 00:10:47,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 00:10:47,649 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 00:10:47,649 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 00:10:47,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 00:10:47,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 00:10:47,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 00:10:47,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 00:10:47,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:10:47,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 00:10:47,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 00:10:47,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 00:10:47,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 00:10:47,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 00:10:47,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 00:10:47,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 00:10:47,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 00:10:47,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 00:10:47,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 [2024-10-24 00:10:47,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 00:10:47,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 00:10:47,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 00:10:47,973 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 00:10:47,974 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 00:10:47,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-10-24 00:10:49,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 00:10:49,665 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 00:10:49,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-10-24 00:10:49,680 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9b79883/c54ce3def0a64913b465ec9ccad4b8f6/FLAGcb5407d56 [2024-10-24 00:10:49,697 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9b79883/c54ce3def0a64913b465ec9ccad4b8f6 [2024-10-24 00:10:49,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 00:10:49,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 00:10:49,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 00:10:49,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 00:10:49,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 00:10:49,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:10:49" (1/1) ... [2024-10-24 00:10:49,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c21a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:49, skipping insertion in model container [2024-10-24 00:10:49,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:10:49" (1/1) ... [2024-10-24 00:10:49,737 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 00:10:49,928 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2024-10-24 00:10:49,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:10:49,968 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 00:10:49,983 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2024-10-24 00:10:49,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:10:50,010 INFO L204 MainTranslator]: Completed translation [2024-10-24 00:10:50,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50 WrapperNode [2024-10-24 00:10:50,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 00:10:50,013 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 00:10:50,013 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 00:10:50,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 00:10:50,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,054 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2024-10-24 00:10:50,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 00:10:50,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 00:10:50,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 00:10:50,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 00:10:50,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,072 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,086 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]. [2024-10-24 00:10:50,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 00:10:50,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 00:10:50,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 00:10:50,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 00:10:50,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (1/1) ... [2024-10-24 00:10:50,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:10:50,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:50,153 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) [2024-10-24 00:10:50,157 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 [2024-10-24 00:10:50,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 00:10:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 00:10:50,207 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 00:10:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 00:10:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 00:10:50,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 00:10:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 00:10:50,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 00:10:50,279 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 00:10:50,282 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 00:10:50,499 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-24 00:10:50,499 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 00:10:50,535 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 00:10:50,536 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 00:10:50,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:10:50 BoogieIcfgContainer [2024-10-24 00:10:50,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 00:10:50,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 00:10:50,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 00:10:50,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 00:10:50,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:10:49" (1/3) ... [2024-10-24 00:10:50,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62537391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:10:50, skipping insertion in model container [2024-10-24 00:10:50,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:50" (2/3) ... [2024-10-24 00:10:50,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62537391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:10:50, skipping insertion in model container [2024-10-24 00:10:50,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:10:50" (3/3) ... [2024-10-24 00:10:50,551 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2024-10-24 00:10:50,570 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 00:10:50,570 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 00:10:50,644 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 00:10:50,653 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;@14d1e2cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 00:10:50,655 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 00:10:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 00:10:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-24 00:10:50,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:50,672 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:50,673 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:50,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1865535902, now seen corresponding path program 1 times [2024-10-24 00:10:50,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:50,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113578575] [2024-10-24 00:10:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:50,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:50,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:10:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:50,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:10:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:50,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:10:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:50,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:10:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:50,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:10:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:50,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:10:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 00:10:50,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113578575] [2024-10-24 00:10:50,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113578575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:10:50,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:10:50,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 00:10:50,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335053375] [2024-10-24 00:10:50,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:10:50,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 00:10:50,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:50,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 00:10:50,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:10:50,947 INFO L87 Difference]: Start difference. First operand has 32 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 00:10:50,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:50,989 INFO L93 Difference]: Finished difference Result 62 states and 107 transitions. [2024-10-24 00:10:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 00:10:51,000 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2024-10-24 00:10:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:51,010 INFO L225 Difference]: With dead ends: 62 [2024-10-24 00:10:51,010 INFO L226 Difference]: Without dead ends: 30 [2024-10-24 00:10:51,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:10:51,022 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:51,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:10:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-24 00:10:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-24 00:10:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-24 00:10:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2024-10-24 00:10:51,068 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 38 [2024-10-24 00:10:51,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:51,070 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2024-10-24 00:10:51,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 00:10:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2024-10-24 00:10:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 00:10:51,073 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:51,074 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:51,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 00:10:51,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:51,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:51,077 INFO L85 PathProgramCache]: Analyzing trace with hash -279596905, now seen corresponding path program 1 times [2024-10-24 00:10:51,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:51,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886519286] [2024-10-24 00:10:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:51,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:51,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:10:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:51,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:10:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:51,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:10:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:51,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:10:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:51,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:10:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:51,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:10:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 00:10:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:51,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886519286] [2024-10-24 00:10:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886519286] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:51,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014249973] [2024-10-24 00:10:51,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:51,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:51,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:51,518 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) [2024-10-24 00:10:51,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 00:10:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:51,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 00:10:51,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 00:10:51,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:52,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014249973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:52,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:10:52,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-10-24 00:10:52,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104870319] [2024-10-24 00:10:52,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:52,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 00:10:52,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:52,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 00:10:52,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-24 00:10:52,170 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-24 00:10:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:52,446 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2024-10-24 00:10:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 00:10:52,447 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 39 [2024-10-24 00:10:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:52,448 INFO L225 Difference]: With dead ends: 51 [2024-10-24 00:10:52,449 INFO L226 Difference]: Without dead ends: 43 [2024-10-24 00:10:52,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-10-24 00:10:52,452 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:52,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 207 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:10:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-24 00:10:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-10-24 00:10:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-24 00:10:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2024-10-24 00:10:52,480 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 39 [2024-10-24 00:10:52,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:52,480 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2024-10-24 00:10:52,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-24 00:10:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2024-10-24 00:10:52,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-24 00:10:52,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:52,484 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:52,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 00:10:52,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:52,685 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:52,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:52,686 INFO L85 PathProgramCache]: Analyzing trace with hash -76887146, now seen corresponding path program 1 times [2024-10-24 00:10:52,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:52,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475323750] [2024-10-24 00:10:52,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:52,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:52,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367877404] [2024-10-24 00:10:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:52,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:52,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:52,723 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) [2024-10-24 00:10:52,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 00:10:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:10:52,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 00:10:52,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:10:52,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:52,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475323750] [2024-10-24 00:10:52,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367877404] [2024-10-24 00:10:52,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367877404] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:10:52,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:10:52,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:10:52,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074352653] [2024-10-24 00:10:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:10:52,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:10:52,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:10:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:10:52,824 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 00:10:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:52,889 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2024-10-24 00:10:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:10:52,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2024-10-24 00:10:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:52,893 INFO L225 Difference]: With dead ends: 61 [2024-10-24 00:10:52,893 INFO L226 Difference]: Without dead ends: 59 [2024-10-24 00:10:52,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 00:10:52,894 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:52,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 129 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:10:52,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-24 00:10:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2024-10-24 00:10:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-24 00:10:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-24 00:10:52,909 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-24 00:10:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:52,909 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-24 00:10:52,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 00:10:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-24 00:10:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 00:10:52,912 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:52,912 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2024-10-24 00:10:52,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 00:10:53,112 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,SelfDestructingSolverStorable2 [2024-10-24 00:10:53,113 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:53,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:53,117 INFO L85 PathProgramCache]: Analyzing trace with hash 345761675, now seen corresponding path program 1 times [2024-10-24 00:10:53,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:53,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037027938] [2024-10-24 00:10:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:53,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:53,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840739661] [2024-10-24 00:10:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:53,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:53,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:53,146 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) [2024-10-24 00:10:53,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 00:10:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:53,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 00:10:53,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 00:10:53,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:10:53,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:53,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037027938] [2024-10-24 00:10:53,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:53,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840739661] [2024-10-24 00:10:53,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840739661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:10:53,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:10:53,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:10:53,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250743800] [2024-10-24 00:10:53,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:10:53,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:10:53,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:53,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:10:53,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:10:53,320 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 00:10:53,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:53,370 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2024-10-24 00:10:53,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:10:53,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2024-10-24 00:10:53,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:53,374 INFO L225 Difference]: With dead ends: 57 [2024-10-24 00:10:53,374 INFO L226 Difference]: Without dead ends: 55 [2024-10-24 00:10:53,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 00:10:53,376 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:53,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 139 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:10:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-24 00:10:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-10-24 00:10:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 33 states have internal predecessors, (34), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-24 00:10:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2024-10-24 00:10:53,398 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 45 [2024-10-24 00:10:53,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:53,401 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2024-10-24 00:10:53,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 00:10:53,401 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2024-10-24 00:10:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 00:10:53,402 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:53,402 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:53,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 00:10:53,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:53,603 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:53,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:53,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2047387093, now seen corresponding path program 1 times [2024-10-24 00:10:53,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:53,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752987077] [2024-10-24 00:10:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:53,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:53,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082686862] [2024-10-24 00:10:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:53,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:53,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:53,631 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) [2024-10-24 00:10:53,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 00:10:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:53,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 00:10:53,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-24 00:10:54,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:54,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:54,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752987077] [2024-10-24 00:10:54,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:54,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082686862] [2024-10-24 00:10:54,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082686862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:54,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:10:54,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-10-24 00:10:54,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816441082] [2024-10-24 00:10:54,129 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:54,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 00:10:54,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:54,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 00:10:54,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-24 00:10:54,130 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 00:10:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:54,265 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2024-10-24 00:10:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 00:10:54,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2024-10-24 00:10:54,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:54,267 INFO L225 Difference]: With dead ends: 61 [2024-10-24 00:10:54,269 INFO L226 Difference]: Without dead ends: 59 [2024-10-24 00:10:54,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-24 00:10:54,271 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:54,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 150 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:10:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-24 00:10:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-10-24 00:10:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-24 00:10:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2024-10-24 00:10:54,284 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 55 [2024-10-24 00:10:54,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:54,285 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2024-10-24 00:10:54,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 00:10:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2024-10-24 00:10:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 00:10:54,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:54,287 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2024-10-24 00:10:54,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 00:10:54,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:54,492 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:54,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:54,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1705825109, now seen corresponding path program 1 times [2024-10-24 00:10:54,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:54,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173071950] [2024-10-24 00:10:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:54,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:54,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405231870] [2024-10-24 00:10:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:54,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:54,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:54,543 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) [2024-10-24 00:10:54,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 00:10:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:54,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 00:10:54,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-24 00:10:54,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-24 00:10:54,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173071950] [2024-10-24 00:10:54,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405231870] [2024-10-24 00:10:54,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405231870] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:10:54,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:10:54,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2024-10-24 00:10:54,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468652896] [2024-10-24 00:10:54,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:54,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 00:10:54,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:54,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 00:10:54,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 00:10:54,800 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 00:10:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:54,904 INFO L93 Difference]: Finished difference Result 86 states and 117 transitions. [2024-10-24 00:10:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 00:10:54,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 62 [2024-10-24 00:10:54,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:54,906 INFO L225 Difference]: With dead ends: 86 [2024-10-24 00:10:54,906 INFO L226 Difference]: Without dead ends: 84 [2024-10-24 00:10:54,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 00:10:54,907 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:54,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 212 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:10:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-24 00:10:54,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2024-10-24 00:10:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-24 00:10:54,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2024-10-24 00:10:54,921 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 62 [2024-10-24 00:10:54,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:54,922 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2024-10-24 00:10:54,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 00:10:54,922 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2024-10-24 00:10:54,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 00:10:54,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:54,923 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2024-10-24 00:10:54,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 00:10:55,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:55,128 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:55,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:55,129 INFO L85 PathProgramCache]: Analyzing trace with hash 392643903, now seen corresponding path program 1 times [2024-10-24 00:10:55,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:55,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036898758] [2024-10-24 00:10:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:55,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:10:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:10:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:10:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:10:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:10:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:10:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:10:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:10:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:10:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:10:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 00:10:55,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:55,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036898758] [2024-10-24 00:10:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036898758] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:55,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838763806] [2024-10-24 00:10:55,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:55,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:55,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:55,397 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) [2024-10-24 00:10:55,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 00:10:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:55,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 00:10:55,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 00:10:55,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 00:10:55,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838763806] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:10:55,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:10:55,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-10-24 00:10:55,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055440231] [2024-10-24 00:10:55,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:55,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 00:10:55,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:55,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 00:10:55,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 00:10:55,626 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-24 00:10:55,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:55,827 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2024-10-24 00:10:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 00:10:55,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 64 [2024-10-24 00:10:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:55,829 INFO L225 Difference]: With dead ends: 101 [2024-10-24 00:10:55,830 INFO L226 Difference]: Without dead ends: 93 [2024-10-24 00:10:55,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-24 00:10:55,831 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 32 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:55,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 249 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:10:55,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-24 00:10:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2024-10-24 00:10:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 45 states have (on average 1.2) internal successors, (54), 46 states have internal predecessors, (54), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-24 00:10:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 117 transitions. [2024-10-24 00:10:55,855 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 117 transitions. Word has length 64 [2024-10-24 00:10:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:55,856 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 117 transitions. [2024-10-24 00:10:55,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-24 00:10:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 117 transitions. [2024-10-24 00:10:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 00:10:55,857 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:55,857 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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] [2024-10-24 00:10:55,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 00:10:56,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:56,059 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:56,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:56,059 INFO L85 PathProgramCache]: Analyzing trace with hash -45785549, now seen corresponding path program 1 times [2024-10-24 00:10:56,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:56,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329073002] [2024-10-24 00:10:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:56,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:56,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993756832] [2024-10-24 00:10:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:56,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:56,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:56,083 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) [2024-10-24 00:10:56,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 00:10:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:56,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 00:10:56,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-24 00:10:56,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:56,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:56,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329073002] [2024-10-24 00:10:56,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:56,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993756832] [2024-10-24 00:10:56,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993756832] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:56,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:10:56,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-10-24 00:10:56,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338606247] [2024-10-24 00:10:56,322 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:56,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 00:10:56,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:56,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 00:10:56,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 00:10:56,324 INFO L87 Difference]: Start difference. First operand 84 states and 117 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 00:10:56,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:56,442 INFO L93 Difference]: Finished difference Result 119 states and 168 transitions. [2024-10-24 00:10:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 00:10:56,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 70 [2024-10-24 00:10:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:56,444 INFO L225 Difference]: With dead ends: 119 [2024-10-24 00:10:56,444 INFO L226 Difference]: Without dead ends: 116 [2024-10-24 00:10:56,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 00:10:56,445 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 7 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:56,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 190 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:10:56,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-24 00:10:56,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2024-10-24 00:10:56,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 62 states have internal predecessors, (73), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-24 00:10:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 161 transitions. [2024-10-24 00:10:56,476 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 161 transitions. Word has length 70 [2024-10-24 00:10:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:56,476 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 161 transitions. [2024-10-24 00:10:56,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 00:10:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 161 transitions. [2024-10-24 00:10:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 00:10:56,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:56,478 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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] [2024-10-24 00:10:56,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 00:10:56,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:56,683 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:56,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:56,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1519552206, now seen corresponding path program 2 times [2024-10-24 00:10:56,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:56,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53969780] [2024-10-24 00:10:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:56,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:56,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140287776] [2024-10-24 00:10:56,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:10:56,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:56,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:56,708 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) [2024-10-24 00:10:56,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 00:10:56,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:10:56,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:10:56,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 00:10:56,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-10-24 00:10:56,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:57,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:57,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53969780] [2024-10-24 00:10:57,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:57,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140287776] [2024-10-24 00:10:57,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140287776] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:57,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:10:57,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-10-24 00:10:57,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263154023] [2024-10-24 00:10:57,024 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:57,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 00:10:57,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 00:10:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 00:10:57,028 INFO L87 Difference]: Start difference. First operand 113 states and 161 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 00:10:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:57,189 INFO L93 Difference]: Finished difference Result 125 states and 171 transitions. [2024-10-24 00:10:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 00:10:57,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2024-10-24 00:10:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:57,191 INFO L225 Difference]: With dead ends: 125 [2024-10-24 00:10:57,191 INFO L226 Difference]: Without dead ends: 123 [2024-10-24 00:10:57,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-24 00:10:57,192 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 12 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:57,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 207 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:10:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-24 00:10:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2024-10-24 00:10:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 66 states have (on average 1.196969696969697) internal successors, (79), 68 states have internal predecessors, (79), 45 states have call successors, (45), 9 states have call predecessors, (45), 9 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-24 00:10:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 167 transitions. [2024-10-24 00:10:57,220 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 167 transitions. Word has length 75 [2024-10-24 00:10:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:57,220 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 167 transitions. [2024-10-24 00:10:57,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-24 00:10:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 167 transitions. [2024-10-24 00:10:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 00:10:57,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:57,222 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 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] [2024-10-24 00:10:57,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 00:10:57,422 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,SelfDestructingSolverStorable8 [2024-10-24 00:10:57,423 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:57,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:57,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1881497901, now seen corresponding path program 3 times [2024-10-24 00:10:57,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:57,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780693243] [2024-10-24 00:10:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:57,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:57,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703384009] [2024-10-24 00:10:57,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 00:10:57,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:57,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:57,446 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) [2024-10-24 00:10:57,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 00:10:57,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 00:10:57,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:10:57,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-24 00:10:57,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 43 proven. 20 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-10-24 00:10:58,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:58,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:58,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780693243] [2024-10-24 00:10:58,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:58,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703384009] [2024-10-24 00:10:58,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703384009] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:58,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:10:58,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-10-24 00:10:58,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030425425] [2024-10-24 00:10:58,854 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:58,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 00:10:58,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:58,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 00:10:58,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-10-24 00:10:58,856 INFO L87 Difference]: Start difference. First operand 121 states and 167 transitions. Second operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-10-24 00:10:59,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:59,424 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2024-10-24 00:10:59,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 00:10:59,425 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 80 [2024-10-24 00:10:59,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:59,427 INFO L225 Difference]: With dead ends: 133 [2024-10-24 00:10:59,427 INFO L226 Difference]: Without dead ends: 131 [2024-10-24 00:10:59,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-10-24 00:10:59,428 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:59,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 242 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 00:10:59,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-24 00:10:59,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-10-24 00:10:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 74 states have internal predecessors, (85), 45 states have call successors, (45), 11 states have call predecessors, (45), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-24 00:10:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 173 transitions. [2024-10-24 00:10:59,483 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 173 transitions. Word has length 80 [2024-10-24 00:10:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:59,484 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 173 transitions. [2024-10-24 00:10:59,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-10-24 00:10:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 173 transitions. [2024-10-24 00:10:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 00:10:59,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:59,487 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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] [2024-10-24 00:10:59,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 00:10:59,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 00:10:59,692 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:59,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1305329662, now seen corresponding path program 1 times [2024-10-24 00:10:59,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:59,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578834381] [2024-10-24 00:10:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:59,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:59,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476805574] [2024-10-24 00:10:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:59,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:59,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:10:59,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 00:10:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:59,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-24 00:10:59,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-10-24 00:11:00,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-24 00:11:01,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:01,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578834381] [2024-10-24 00:11:01,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:11:01,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476805574] [2024-10-24 00:11:01,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476805574] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:11:01,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:11:01,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-10-24 00:11:01,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311132846] [2024-10-24 00:11:01,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:01,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 00:11:01,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 00:11:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-10-24 00:11:01,324 INFO L87 Difference]: Start difference. First operand 129 states and 173 transitions. Second operand has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-10-24 00:11:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:03,819 INFO L93 Difference]: Finished difference Result 229 states and 336 transitions. [2024-10-24 00:11:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-24 00:11:03,819 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 86 [2024-10-24 00:11:03,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:03,822 INFO L225 Difference]: With dead ends: 229 [2024-10-24 00:11:03,822 INFO L226 Difference]: Without dead ends: 225 [2024-10-24 00:11:03,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-10-24 00:11:03,823 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 74 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:03,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 494 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 00:11:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-10-24 00:11:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2024-10-24 00:11:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 114 states have (on average 1.236842105263158) internal successors, (141), 117 states have internal predecessors, (141), 94 states have call successors, (94), 13 states have call predecessors, (94), 13 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-10-24 00:11:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 327 transitions. [2024-10-24 00:11:03,913 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 327 transitions. Word has length 86 [2024-10-24 00:11:03,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:03,913 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 327 transitions. [2024-10-24 00:11:03,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-10-24 00:11:03,914 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 327 transitions. [2024-10-24 00:11:03,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-24 00:11:03,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:03,917 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:11:03,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 00:11:04,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-24 00:11:04,118 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:04,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:04,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1470837899, now seen corresponding path program 4 times [2024-10-24 00:11:04,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:04,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807596615] [2024-10-24 00:11:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:04,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:11:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:11:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:11:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:11:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:11:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:11:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:11:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:11:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:11:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:11:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 00:11:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 00:11:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 00:11:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-24 00:11:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 00:11:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,241 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-10-24 00:11:04,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:04,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807596615] [2024-10-24 00:11:04,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807596615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:11:04,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:11:04,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:11:04,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931778588] [2024-10-24 00:11:04,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:11:04,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:11:04,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:04,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:11:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:11:04,243 INFO L87 Difference]: Start difference. First operand 222 states and 327 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-24 00:11:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:04,361 INFO L93 Difference]: Finished difference Result 275 states and 403 transitions. [2024-10-24 00:11:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 00:11:04,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 95 [2024-10-24 00:11:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:04,364 INFO L225 Difference]: With dead ends: 275 [2024-10-24 00:11:04,364 INFO L226 Difference]: Without dead ends: 201 [2024-10-24 00:11:04,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 00:11:04,365 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:04,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 166 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:11:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-24 00:11:04,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2024-10-24 00:11:04,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 97 states have (on average 1.175257731958763) internal successors, (114), 100 states have internal predecessors, (114), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-10-24 00:11:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 268 transitions. [2024-10-24 00:11:04,432 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 268 transitions. Word has length 95 [2024-10-24 00:11:04,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:04,432 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 268 transitions. [2024-10-24 00:11:04,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-24 00:11:04,433 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 268 transitions. [2024-10-24 00:11:04,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 00:11:04,434 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:04,434 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 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] [2024-10-24 00:11:04,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 00:11:04,434 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:04,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1556724626, now seen corresponding path program 1 times [2024-10-24 00:11:04,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:04,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41655967] [2024-10-24 00:11:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:04,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:11:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:11:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:11:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:11:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:11:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:11:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:11:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:11:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:11:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:11:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 00:11:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 00:11:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 00:11:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 00:11:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 00:11:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 00:11:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-24 00:11:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-10-24 00:11:04,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:04,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41655967] [2024-10-24 00:11:04,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41655967] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:04,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587686547] [2024-10-24 00:11:04,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:04,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:04,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:04,785 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:04,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 00:11:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:04,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 00:11:04,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-10-24 00:11:04,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-10-24 00:11:05,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587686547] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:11:05,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:11:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-10-24 00:11:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403669560] [2024-10-24 00:11:05,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:05,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 00:11:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 00:11:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-24 00:11:05,077 INFO L87 Difference]: Start difference. First operand 189 states and 268 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2024-10-24 00:11:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:05,384 INFO L93 Difference]: Finished difference Result 255 states and 362 transitions. [2024-10-24 00:11:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 00:11:05,385 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 102 [2024-10-24 00:11:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:05,387 INFO L225 Difference]: With dead ends: 255 [2024-10-24 00:11:05,387 INFO L226 Difference]: Without dead ends: 168 [2024-10-24 00:11:05,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-10-24 00:11:05,388 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:05,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 274 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:11:05,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-10-24 00:11:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-10-24 00:11:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 91 states have internal predecessors, (101), 66 states have call successors, (66), 13 states have call predecessors, (66), 13 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-10-24 00:11:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 231 transitions. [2024-10-24 00:11:05,451 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 231 transitions. Word has length 102 [2024-10-24 00:11:05,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:05,451 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 231 transitions. [2024-10-24 00:11:05,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2024-10-24 00:11:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 231 transitions. [2024-10-24 00:11:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-24 00:11:05,454 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:05,454 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 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] [2024-10-24 00:11:05,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 00:11:05,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 00:11:05,655 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:05,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:05,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1903041589, now seen corresponding path program 1 times [2024-10-24 00:11:05,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:05,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552190567] [2024-10-24 00:11:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:05,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:11:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:11:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:11:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:11:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:11:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:11:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:11:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:11:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:11:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:11:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 00:11:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 00:11:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 00:11:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-24 00:11:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 00:11:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 00:11:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-24 00:11:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 00:11:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-24 00:11:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-10-24 00:11:05,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:05,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552190567] [2024-10-24 00:11:05,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552190567] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:05,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556531799] [2024-10-24 00:11:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:05,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:05,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:05,818 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:05,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 00:11:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:05,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:11:05,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 88 proven. 9 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-10-24 00:11:05,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-10-24 00:11:06,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556531799] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:11:06,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:11:06,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-10-24 00:11:06,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715171325] [2024-10-24 00:11:06,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:06,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 00:11:06,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 00:11:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 00:11:06,036 INFO L87 Difference]: Start difference. First operand 168 states and 231 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-10-24 00:11:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:06,253 INFO L93 Difference]: Finished difference Result 194 states and 270 transitions. [2024-10-24 00:11:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 00:11:06,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 116 [2024-10-24 00:11:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:06,255 INFO L225 Difference]: With dead ends: 194 [2024-10-24 00:11:06,255 INFO L226 Difference]: Without dead ends: 182 [2024-10-24 00:11:06,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 267 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-10-24 00:11:06,257 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 17 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:06,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 318 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:11:06,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-24 00:11:06,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 163. [2024-10-24 00:11:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 87 states have internal predecessors, (97), 65 states have call successors, (65), 12 states have call predecessors, (65), 12 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-10-24 00:11:06,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 225 transitions. [2024-10-24 00:11:06,315 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 225 transitions. Word has length 116 [2024-10-24 00:11:06,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:06,315 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 225 transitions. [2024-10-24 00:11:06,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-10-24 00:11:06,316 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 225 transitions. [2024-10-24 00:11:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-24 00:11:06,319 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:06,319 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 3, 3, 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] [2024-10-24 00:11:06,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 00:11:06,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 00:11:06,520 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:06,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:06,521 INFO L85 PathProgramCache]: Analyzing trace with hash -956526070, now seen corresponding path program 2 times [2024-10-24 00:11:06,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:06,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875755075] [2024-10-24 00:11:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:06,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:11:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:11:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:11:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:11:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:11:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:11:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:11:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:11:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:11:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:11:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 00:11:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 00:11:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 00:11:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-24 00:11:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 00:11:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 00:11:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-24 00:11:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 00:11:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 00:11:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-10-24 00:11:06,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:06,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875755075] [2024-10-24 00:11:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875755075] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:06,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8199349] [2024-10-24 00:11:06,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:11:06,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:06,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:06,809 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:06,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 00:11:06,881 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:11:06,881 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:11:06,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 00:11:06,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 103 proven. 18 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-10-24 00:11:07,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-10-24 00:11:07,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8199349] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:11:07,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:11:07,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-10-24 00:11:07,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107156546] [2024-10-24 00:11:07,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:07,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 00:11:07,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:07,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 00:11:07,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-10-24 00:11:07,173 INFO L87 Difference]: Start difference. First operand 163 states and 225 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2024-10-24 00:11:07,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:07,449 INFO L93 Difference]: Finished difference Result 196 states and 272 transitions. [2024-10-24 00:11:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 00:11:07,450 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) Word has length 117 [2024-10-24 00:11:07,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:07,464 INFO L225 Difference]: With dead ends: 196 [2024-10-24 00:11:07,464 INFO L226 Difference]: Without dead ends: 160 [2024-10-24 00:11:07,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 260 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-10-24 00:11:07,465 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 25 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:07,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 307 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:11:07,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-24 00:11:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-10-24 00:11:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 84 states have internal predecessors, (91), 65 states have call successors, (65), 12 states have call predecessors, (65), 12 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-10-24 00:11:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 219 transitions. [2024-10-24 00:11:07,517 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 219 transitions. Word has length 117 [2024-10-24 00:11:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:07,517 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 219 transitions. [2024-10-24 00:11:07,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2024-10-24 00:11:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 219 transitions. [2024-10-24 00:11:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-24 00:11:07,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:07,519 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:11:07,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-24 00:11:07,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 00:11:07,720 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:07,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:07,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1600677333, now seen corresponding path program 2 times [2024-10-24 00:11:07,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:07,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162402495] [2024-10-24 00:11:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:07,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:11:07,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557481258] [2024-10-24 00:11:07,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:11:07,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:07,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:07,745 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:07,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 00:11:07,827 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:11:07,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:11:07,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-24 00:11:07,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-10-24 00:11:08,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-10-24 00:11:10,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:10,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162402495] [2024-10-24 00:11:10,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:11:10,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557481258] [2024-10-24 00:11:10,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557481258] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:11:10,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:11:10,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2024-10-24 00:11:10,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038352935] [2024-10-24 00:11:10,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:10,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 00:11:10,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:10,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 00:11:10,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-10-24 00:11:10,773 INFO L87 Difference]: Start difference. First operand 160 states and 219 transitions. Second operand has 26 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2024-10-24 00:11:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:14,073 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2024-10-24 00:11:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-24 00:11:14,073 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) Word has length 133 [2024-10-24 00:11:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:14,075 INFO L225 Difference]: With dead ends: 270 [2024-10-24 00:11:14,075 INFO L226 Difference]: Without dead ends: 237 [2024-10-24 00:11:14,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 238 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2024-10-24 00:11:14,077 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 127 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:14,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 562 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 00:11:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-10-24 00:11:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 227. [2024-10-24 00:11:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 117 states have (on average 1.1452991452991452) internal successors, (134), 120 states have internal predecessors, (134), 94 states have call successors, (94), 15 states have call predecessors, (94), 15 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-10-24 00:11:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 320 transitions. [2024-10-24 00:11:14,173 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 320 transitions. Word has length 133 [2024-10-24 00:11:14,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:14,174 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 320 transitions. [2024-10-24 00:11:14,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2024-10-24 00:11:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 320 transitions. [2024-10-24 00:11:14,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-10-24 00:11:14,176 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:14,176 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-10-24 00:11:14,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-24 00:11:14,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:14,381 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:14,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:14,382 INFO L85 PathProgramCache]: Analyzing trace with hash -586925140, now seen corresponding path program 2 times [2024-10-24 00:11:14,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:14,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521420358] [2024-10-24 00:11:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:14,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:11:14,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560540962] [2024-10-24 00:11:14,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:11:14,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:14,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:14,410 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:14,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 00:11:14,500 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:11:14,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:11:14,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-24 00:11:14,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 89 proven. 51 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-10-24 00:11:15,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 86 proven. 7 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-10-24 00:11:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:16,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521420358] [2024-10-24 00:11:16,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:11:16,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560540962] [2024-10-24 00:11:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560540962] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:11:16,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:11:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9] total 26 [2024-10-24 00:11:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987077894] [2024-10-24 00:11:16,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:16,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 00:11:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 00:11:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2024-10-24 00:11:16,116 INFO L87 Difference]: Start difference. First operand 227 states and 320 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 22 states have internal predecessors, (49), 10 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) [2024-10-24 00:11:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:22,081 INFO L93 Difference]: Finished difference Result 308 states and 444 transitions. [2024-10-24 00:11:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-24 00:11:22,082 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 22 states have internal predecessors, (49), 10 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) Word has length 138 [2024-10-24 00:11:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:22,084 INFO L225 Difference]: With dead ends: 308 [2024-10-24 00:11:22,086 INFO L226 Difference]: Without dead ends: 295 [2024-10-24 00:11:22,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=933, Invalid=3623, Unknown=0, NotChecked=0, Total=4556 [2024-10-24 00:11:22,089 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 82 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:22,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1062 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-24 00:11:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-10-24 00:11:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 275. [2024-10-24 00:11:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 139 states have (on average 1.129496402877698) internal successors, (157), 141 states have internal predecessors, (157), 118 states have call successors, (118), 17 states have call predecessors, (118), 17 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2024-10-24 00:11:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 392 transitions. [2024-10-24 00:11:22,222 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 392 transitions. Word has length 138 [2024-10-24 00:11:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:22,223 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 392 transitions. [2024-10-24 00:11:22,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 22 states have internal predecessors, (49), 10 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) [2024-10-24 00:11:22,223 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 392 transitions. [2024-10-24 00:11:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 00:11:22,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:22,224 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:11:22,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-24 00:11:22,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 00:11:22,425 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:22,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:22,426 INFO L85 PathProgramCache]: Analyzing trace with hash -181771727, now seen corresponding path program 3 times [2024-10-24 00:11:22,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:22,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118815435] [2024-10-24 00:11:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:22,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:11:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:11:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:11:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:11:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:11:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:11:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:11:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:11:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:11:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:11:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 00:11:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 00:11:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 00:11:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 00:11:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 00:11:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 00:11:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 00:11:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-24 00:11:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 00:11:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-24 00:11:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-24 00:11:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 00:11:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-24 00:11:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-24 00:11:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 54 proven. 51 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-10-24 00:11:22,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:22,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118815435] [2024-10-24 00:11:22,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118815435] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:22,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37258192] [2024-10-24 00:11:22,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 00:11:22,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:22,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:22,747 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:22,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 00:11:22,830 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-24 00:11:22,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:11:22,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-24 00:11:22,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 115 proven. 62 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2024-10-24 00:11:23,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:24,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37258192] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:24,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:11:24,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 19 [2024-10-24 00:11:24,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899396218] [2024-10-24 00:11:24,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:24,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 00:11:24,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 00:11:24,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2024-10-24 00:11:24,249 INFO L87 Difference]: Start difference. First operand 275 states and 392 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 11 states have call predecessors, (40), 13 states have call successors, (40) [2024-10-24 00:11:24,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:24,981 INFO L93 Difference]: Finished difference Result 350 states and 487 transitions. [2024-10-24 00:11:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 00:11:24,981 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 11 states have call predecessors, (40), 13 states have call successors, (40) Word has length 141 [2024-10-24 00:11:24,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:24,983 INFO L225 Difference]: With dead ends: 350 [2024-10-24 00:11:24,984 INFO L226 Difference]: Without dead ends: 285 [2024-10-24 00:11:24,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2024-10-24 00:11:24,985 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 34 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:24,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 437 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 00:11:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-10-24 00:11:25,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2024-10-24 00:11:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 145 states have (on average 1.1172413793103448) internal successors, (162), 147 states have internal predecessors, (162), 118 states have call successors, (118), 20 states have call predecessors, (118), 20 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2024-10-24 00:11:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 397 transitions. [2024-10-24 00:11:25,104 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 397 transitions. Word has length 141 [2024-10-24 00:11:25,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:25,105 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 397 transitions. [2024-10-24 00:11:25,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 11 states have call predecessors, (40), 13 states have call successors, (40) [2024-10-24 00:11:25,105 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 397 transitions. [2024-10-24 00:11:25,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-24 00:11:25,106 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:25,106 INFO L215 NwaCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:11:25,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-24 00:11:25,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 00:11:25,311 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:25,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:25,311 INFO L85 PathProgramCache]: Analyzing trace with hash -251529029, now seen corresponding path program 3 times [2024-10-24 00:11:25,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:25,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089311886] [2024-10-24 00:11:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:25,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:11:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:11:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:11:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:11:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:11:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:11:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:11:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:11:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:11:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:11:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 00:11:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 00:11:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 00:11:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 00:11:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 00:11:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 00:11:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 00:11:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-24 00:11:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 00:11:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-24 00:11:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-24 00:11:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 00:11:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 00:11:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-24 00:11:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-24 00:11:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-24 00:11:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 42 proven. 75 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2024-10-24 00:11:25,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:25,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089311886] [2024-10-24 00:11:25,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089311886] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:25,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245682042] [2024-10-24 00:11:25,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 00:11:25,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:25,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:25,597 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:25,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-24 00:11:25,674 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-24 00:11:25,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:11:25,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-24 00:11:25,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 95 proven. 43 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-10-24 00:11:26,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:31,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245682042] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:31,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:11:31,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 22 [2024-10-24 00:11:31,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611097549] [2024-10-24 00:11:31,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:31,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 00:11:31,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:31,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 00:11:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=711, Unknown=1, NotChecked=0, Total=812 [2024-10-24 00:11:31,226 INFO L87 Difference]: Start difference. First operand 284 states and 397 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 14 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2024-10-24 00:11:32,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:32,487 INFO L93 Difference]: Finished difference Result 479 states and 692 transitions. [2024-10-24 00:11:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-24 00:11:32,487 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 14 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) Word has length 152 [2024-10-24 00:11:32,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:32,490 INFO L225 Difference]: With dead ends: 479 [2024-10-24 00:11:32,490 INFO L226 Difference]: Without dead ends: 355 [2024-10-24 00:11:32,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=296, Invalid=1683, Unknown=1, NotChecked=0, Total=1980 [2024-10-24 00:11:32,492 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 86 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:32,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 566 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 00:11:32,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-10-24 00:11:32,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 330. [2024-10-24 00:11:32,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 164 states have (on average 1.1097560975609757) internal successors, (182), 167 states have internal predecessors, (182), 144 states have call successors, (144), 21 states have call predecessors, (144), 21 states have return successors, (143), 141 states have call predecessors, (143), 143 states have call successors, (143) [2024-10-24 00:11:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 469 transitions. [2024-10-24 00:11:32,652 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 469 transitions. Word has length 152 [2024-10-24 00:11:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:32,652 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 469 transitions. [2024-10-24 00:11:32,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 14 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2024-10-24 00:11:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 469 transitions. [2024-10-24 00:11:32,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-24 00:11:32,654 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:32,654 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:11:32,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-24 00:11:32,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:32,854 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:32,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash -586182328, now seen corresponding path program 4 times [2024-10-24 00:11:32,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:32,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299514824] [2024-10-24 00:11:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:32,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:11:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:11:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:11:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:11:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:11:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:11:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:11:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:11:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:11:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:11:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 00:11:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 00:11:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 00:11:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-24 00:11:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 00:11:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 00:11:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-24 00:11:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 00:11:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-24 00:11:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-24 00:11:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-24 00:11:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-24 00:11:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-24 00:11:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-24 00:11:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-24 00:11:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-24 00:11:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-24 00:11:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 65 proven. 74 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2024-10-24 00:11:33,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299514824] [2024-10-24 00:11:33,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299514824] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302579407] [2024-10-24 00:11:33,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 00:11:33,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:33,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:33,143 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:33,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-24 00:11:33,225 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 00:11:33,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:11:33,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 00:11:33,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 149 proven. 68 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2024-10-24 00:11:33,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 65 proven. 74 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2024-10-24 00:11:33,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302579407] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:11:33,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:11:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2024-10-24 00:11:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657561762] [2024-10-24 00:11:33,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:33,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 00:11:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 00:11:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-10-24 00:11:33,525 INFO L87 Difference]: Start difference. First operand 330 states and 469 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 12 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2024-10-24 00:11:33,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:33,916 INFO L93 Difference]: Finished difference Result 411 states and 593 transitions. [2024-10-24 00:11:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 00:11:33,916 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 12 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) Word has length 161 [2024-10-24 00:11:33,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:33,918 INFO L225 Difference]: With dead ends: 411 [2024-10-24 00:11:33,918 INFO L226 Difference]: Without dead ends: 193 [2024-10-24 00:11:33,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 366 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-10-24 00:11:33,919 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 29 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:33,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 534 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:11:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-24 00:11:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 160. [2024-10-24 00:11:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 83 states have internal predecessors, (87), 63 states have call successors, (63), 14 states have call predecessors, (63), 14 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-10-24 00:11:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 212 transitions. [2024-10-24 00:11:34,000 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 212 transitions. Word has length 161 [2024-10-24 00:11:34,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:34,001 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 212 transitions. [2024-10-24 00:11:34,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 12 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2024-10-24 00:11:34,001 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 212 transitions. [2024-10-24 00:11:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-24 00:11:34,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:34,002 INFO L215 NwaCegarLoop]: trace histogram [28, 27, 27, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:11:34,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-24 00:11:34,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:34,203 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:34,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1010692622, now seen corresponding path program 5 times [2024-10-24 00:11:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:34,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469820044] [2024-10-24 00:11:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:34,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:11:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:11:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:11:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:11:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:11:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:11:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:11:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:11:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:11:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:11:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 00:11:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 00:11:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 00:11:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 00:11:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 00:11:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 00:11:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 00:11:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-24 00:11:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 00:11:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-24 00:11:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-24 00:11:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 00:11:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-24 00:11:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-24 00:11:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-24 00:11:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-24 00:11:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-24 00:11:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-24 00:11:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-24 00:11:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-24 00:11:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-24 00:11:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-24 00:11:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-24 00:11:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 86 proven. 105 refuted. 0 times theorem prover too weak. 1449 trivial. 0 not checked. [2024-10-24 00:11:34,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469820044] [2024-10-24 00:11:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469820044] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885824386] [2024-10-24 00:11:34,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 00:11:34,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:34,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:34,540 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:34,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-24 00:11:34,702 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-10-24 00:11:34,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:11:34,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 00:11:34,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 368 proven. 105 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-10-24 00:11:34,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 122 proven. 69 refuted. 0 times theorem prover too weak. 1449 trivial. 0 not checked. [2024-10-24 00:11:35,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885824386] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:11:35,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:11:35,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-10-24 00:11:35,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419658611] [2024-10-24 00:11:35,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:35,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 00:11:35,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:35,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 00:11:35,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-10-24 00:11:35,215 INFO L87 Difference]: Start difference. First operand 160 states and 212 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 19 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (70), 18 states have call predecessors, (70), 19 states have call successors, (70) [2024-10-24 00:11:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:35,507 INFO L93 Difference]: Finished difference Result 160 states and 212 transitions. [2024-10-24 00:11:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 00:11:35,508 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 19 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (70), 18 states have call predecessors, (70), 19 states have call successors, (70) Word has length 190 [2024-10-24 00:11:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:35,509 INFO L225 Difference]: With dead ends: 160 [2024-10-24 00:11:35,509 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 00:11:35,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2024-10-24 00:11:35,510 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 51 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:35,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 452 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:11:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 00:11:35,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 00:11:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-10-24 00:11:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 00:11:35,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 190 [2024-10-24 00:11:35,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:35,512 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 00:11:35,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 19 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (70), 18 states have call predecessors, (70), 19 states have call successors, (70) [2024-10-24 00:11:35,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 00:11:35,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 00:11:35,515 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-24 00:11:35,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-24 00:11:35,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:35,723 INFO L407 BasicCegarLoop]: Path program histogram: [5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:11:35,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-24 00:11:39,932 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 00:11:39,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:11:39 BoogieIcfgContainer [2024-10-24 00:11:39,975 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 00:11:39,976 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 00:11:39,976 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 00:11:39,976 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 00:11:39,976 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:10:50" (3/4) ... [2024-10-24 00:11:39,979 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 00:11:39,982 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-10-24 00:11:39,983 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-24 00:11:39,986 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-24 00:11:39,987 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-24 00:11:39,987 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 00:11:39,987 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 00:11:40,099 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 00:11:40,099 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 00:11:40,100 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 00:11:40,100 INFO L158 Benchmark]: Toolchain (without parser) took 50398.23ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 116.5MB in the beginning and 160.8MB in the end (delta: -44.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2024-10-24 00:11:40,100 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 00:11:40,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.32ms. Allocated memory is still 167.8MB. Free memory was 116.5MB in the beginning and 104.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 00:11:40,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.94ms. Allocated memory is still 167.8MB. Free memory was 104.0MB in the beginning and 101.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 00:11:40,101 INFO L158 Benchmark]: Boogie Preprocessor took 50.79ms. Allocated memory is still 167.8MB. Free memory was 101.9MB in the beginning and 100.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 00:11:40,101 INFO L158 Benchmark]: RCFGBuilder took 429.78ms. Allocated memory is still 167.8MB. Free memory was 100.4MB in the beginning and 86.9MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 00:11:40,101 INFO L158 Benchmark]: TraceAbstraction took 49435.07ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 86.3MB in the beginning and 166.0MB in the end (delta: -79.7MB). Peak memory consumption was 94.0MB. Max. memory is 16.1GB. [2024-10-24 00:11:40,102 INFO L158 Benchmark]: Witness Printer took 124.05ms. Allocated memory is still 237.0MB. Free memory was 166.0MB in the beginning and 160.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 00:11:40,103 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.32ms. Allocated memory is still 167.8MB. Free memory was 116.5MB in the beginning and 104.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.94ms. Allocated memory is still 167.8MB. Free memory was 104.0MB in the beginning and 101.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.79ms. Allocated memory is still 167.8MB. Free memory was 101.9MB in the beginning and 100.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 429.78ms. Allocated memory is still 167.8MB. Free memory was 100.4MB in the beginning and 86.9MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 49435.07ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 86.3MB in the beginning and 166.0MB in the end (delta: -79.7MB). Peak memory consumption was 94.0MB. Max. memory is 16.1GB. * Witness Printer took 124.05ms. Allocated memory is still 237.0MB. Free memory was 166.0MB in the beginning and 160.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.1s, OverallIterations: 21, TraceHistogramMax: 28, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 17.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 799 SdHoareTripleChecker+Valid, 8.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 706 mSDsluCounter, 6938 SdHoareTripleChecker+Invalid, 8.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6016 mSDsCounter, 915 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6026 IncrementalHoareTripleChecker+Invalid, 6941 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 915 mSolverCounterUnsat, 922 mSDtfsCounter, 6026 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3771 GetRequests, 3320 SyntacticMatches, 33 SemanticMatches, 418 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2560 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=19, InterpolantAutomatonStates: 300, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 181 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 20.4s InterpolantComputationTime, 3865 NumberOfCodeBlocks, 3682 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 4210 ConstructedInterpolants, 0 QuantifiedInterpolants, 13810 SizeOfPredicates, 60 NumberOfNonLiveVariables, 4066 ConjunctsInSsa, 442 ConjunctsInUnsatCore, 40 InterpolantComputations, 4 PerfectInterpolantSequences, 18203/19378 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((((((((((((yy == ((long long) y * y)) && (p == 1)) && (1 <= y)) && (a == c)) && (b == y)) && (b <= 2)) && (r == 0)) && (q == 0)) && (k == 0)) && (1 <= x)) && (xy == ((long long) x * y))) && (a == x)) && (x <= 2)) && (s == 1)) || ((((((((((((b == 1) && (2 == xy)) && (p == 0)) && (2 == y)) && (x == 1)) && (q == 1)) && (k == 0)) && (s == 0)) && (r == 1)) && (2 == a)) && (yy == 4)) && (2 == c))) || (((((((((((((k == 1) && (yy == ((long long) y * y))) && (p == 1)) && (1 <= y)) && (b == y)) && (0 <= c)) && (r == 0)) && (q == 0)) && (xy == ((long long) x * y))) && (a == x)) && (x <= 2)) && (s == 1)) && (((__int128) b + c) == x))) || ((((((((((((c == 0) && (b == 1)) && (2 == xy)) && (p == 0)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == a)) && (yy == 4)) && (2 == k))) || (((((((((((((c == 0) && (a == (c + ((__int128) b * k)))) && (yy == ((long long) y * y))) && (p == 1)) && (1 <= y)) && (b == y)) && (r == 0)) && (q == 0)) && (1 <= x)) && (xy == ((long long) x * y))) && (x == (c + ((__int128) b * k)))) && (x <= 2)) && (s == 1))) || ((((((((((((k == 1) && (b == 1)) && (2 == xy)) && (p == 0)) && (c == 1)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == a)) && (yy == 4))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((b == 1) && (yy == ((long long) y * y))) && (p == 0)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == a)) && (xy == y)) || ((((((((((long long) x + 1) <= y) && (y <= 2)) && (((__int128) b + 1) <= a)) && (((__int128) 2 + q) == 0)) && (y == ((__int128) ((long long) 2 * x) + b))) && ((((__int128) r * y) + ((__int128) p * x)) == a)) && (((__int128) a + 1) <= y)) && (s == 1))) || ((((((((((((yy == ((long long) y * y)) && (p == 1)) && (1 <= y)) && (b == y)) && (b <= 2)) && (r == 0)) && (q == 0)) && (1 <= x)) && (xy == ((long long) x * y))) && (a == x)) && (x <= 2)) && (s == 1))) || (((((((((p == 0) && (y <= 2)) && (a == y)) && (b == 0)) && (1 <= a)) && (1 <= x)) && (r == 1)) && (x <= 2)) && ((((__int128) s * y) + ((__int128) q * x)) == 0))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-10-24 00:11:40,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE