./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-c7c6ca5-m [2024-11-08 14:25:13,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:25:13,703 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:25:13,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:25:13,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:25:13,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:25:13,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:25:13,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:25:13,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:25:13,734 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:25:13,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:25:13,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:25:13,735 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:25:13,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:25:13,735 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:25:13,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:25:13,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:25:13,740 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:25:13,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:25:13,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:25:13,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:25:13,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:25:13,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:25:13,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:25:13,746 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:25:13,746 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:25:13,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:25:13,747 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:25:13,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:25:13,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:25:13,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:25:13,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:25:13,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:25:13,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:25:13,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:25:13,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:25:13,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:25:13,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:25:13,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:25:13,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:25:13,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:25:13,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:25:13,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 [2024-11-08 14:25:14,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:25:14,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:25:14,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:25:14,051 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:25:14,052 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:25:14,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-11-08 14:25:15,549 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:25:15,719 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:25:15,719 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-11-08 14:25:15,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4cad4c6f/040a0bf7a2f744f7b7bac312924f6818/FLAG03405f7e2 [2024-11-08 14:25:16,105 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4cad4c6f/040a0bf7a2f744f7b7bac312924f6818 [2024-11-08 14:25:16,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:25:16,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:25:16,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:25:16,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:25:16,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:25:16,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba9930a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16, skipping insertion in model container [2024-11-08 14:25:16,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,142 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:25:16,316 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2024-11-08 14:25:16,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:25:16,379 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:25:16,390 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2024-11-08 14:25:16,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:25:16,414 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:25:16,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16 WrapperNode [2024-11-08 14:25:16,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:25:16,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:25:16,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:25:16,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:25:16,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,461 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2024-11-08 14:25:16,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:25:16,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:25:16,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:25:16,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:25:16,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,488 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 14:25:16,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:25:16,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:25:16,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:25:16,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:25:16,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (1/1) ... [2024-11-08 14:25:16,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:25:16,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:16,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 14:25:16,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 14:25:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:25:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 14:25:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 14:25:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:25:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:25:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:25:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 14:25:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 14:25:16,620 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:25:16,622 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:25:16,795 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-08 14:25:16,795 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:25:16,809 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:25:16,810 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 14:25:16,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:25:16 BoogieIcfgContainer [2024-11-08 14:25:16,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:25:16,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:25:16,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:25:16,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:25:16,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:25:16" (1/3) ... [2024-11-08 14:25:16,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6484369f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:25:16, skipping insertion in model container [2024-11-08 14:25:16,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:25:16" (2/3) ... [2024-11-08 14:25:16,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6484369f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:25:16, skipping insertion in model container [2024-11-08 14:25:16,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:25:16" (3/3) ... [2024-11-08 14:25:16,819 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2024-11-08 14:25:16,833 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:25:16,833 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:25:16,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:25:16,890 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;@31906268, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:25:16,891 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:25:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 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) [2024-11-08 14:25:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 14:25:16,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:16,900 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] [2024-11-08 14:25:16,901 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:16,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:16,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1146169762, now seen corresponding path program 1 times [2024-11-08 14:25:16,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:16,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834387386] [2024-11-08 14:25:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:16,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:25:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:25:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:25:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:25:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 14:25:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 14:25:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 14:25:17,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:17,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834387386] [2024-11-08 14:25:17,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834387386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:25:17,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:25:17,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:25:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018602026] [2024-11-08 14:25:17,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:25:17,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:25:17,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:25:17,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:25:17,149 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-08 14:25:17,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:17,168 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2024-11-08 14:25:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:25:17,170 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 39 [2024-11-08 14:25:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:17,176 INFO L225 Difference]: With dead ends: 67 [2024-11-08 14:25:17,176 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 14:25:17,179 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 [2024-11-08 14:25:17,183 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:17,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:25:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 14:25:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-08 14:25:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 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) [2024-11-08 14:25:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2024-11-08 14:25:17,227 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2024-11-08 14:25:17,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:17,227 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2024-11-08 14:25:17,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-08 14:25:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2024-11-08 14:25:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 14:25:17,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:17,232 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] [2024-11-08 14:25:17,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:25:17,233 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:17,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:17,234 INFO L85 PathProgramCache]: Analyzing trace with hash 846808023, now seen corresponding path program 1 times [2024-11-08 14:25:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:17,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094794551] [2024-11-08 14:25:17,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:25:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:25:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:25:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:25:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 14:25:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 14:25:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 14:25:17,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:17,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094794551] [2024-11-08 14:25:17,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094794551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:17,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318262004] [2024-11-08 14:25:17,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:17,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:17,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:17,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:25:17,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 14:25:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:17,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 14:25:17,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 14:25:17,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:18,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318262004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:18,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:25:18,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-11-08 14:25:18,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828901837] [2024-11-08 14:25:18,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:18,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 14:25:18,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:18,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 14:25:18,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-08 14:25:18,144 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 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) [2024-11-08 14:25:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:18,359 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2024-11-08 14:25:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 14:25:18,360 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 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 40 [2024-11-08 14:25:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:18,361 INFO L225 Difference]: With dead ends: 52 [2024-11-08 14:25:18,362 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 14:25:18,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-08 14:25:18,363 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 35 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:18,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 173 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:25:18,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 14:25:18,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-08 14:25:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 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) [2024-11-08 14:25:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2024-11-08 14:25:18,376 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 40 [2024-11-08 14:25:18,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:18,376 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2024-11-08 14:25:18,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 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) [2024-11-08 14:25:18,377 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2024-11-08 14:25:18,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 14:25:18,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:18,378 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, 1] [2024-11-08 14:25:18,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 14:25:18,578 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 [2024-11-08 14:25:18,579 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:18,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:18,579 INFO L85 PathProgramCache]: Analyzing trace with hash 481927254, now seen corresponding path program 1 times [2024-11-08 14:25:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:18,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268797290] [2024-11-08 14:25:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:18,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:25:18,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109789129] [2024-11-08 14:25:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:18,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:18,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:18,621 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:25:18,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 14:25:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:18,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 14:25:18,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 14:25:18,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:25:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:18,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268797290] [2024-11-08 14:25:18,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:25:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109789129] [2024-11-08 14:25:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109789129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:25:18,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:25:18,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:25:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262503438] [2024-11-08 14:25:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:25:18,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:25:18,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:18,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:25:18,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:25:18,728 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-08 14:25:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:18,780 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2024-11-08 14:25:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:25:18,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 41 [2024-11-08 14:25:18,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:18,783 INFO L225 Difference]: With dead ends: 62 [2024-11-08 14:25:18,783 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 14:25:18,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:25:18,785 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:18,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 136 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:25:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 14:25:18,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2024-11-08 14:25:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 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) [2024-11-08 14:25:18,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-11-08 14:25:18,803 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 41 [2024-11-08 14:25:18,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:18,803 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-11-08 14:25:18,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-08 14:25:18,804 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-11-08 14:25:18,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 14:25:18,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:18,805 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, 1] [2024-11-08 14:25:18,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 14:25:19,005 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 [2024-11-08 14:25:19,006 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:19,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:19,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1626076469, now seen corresponding path program 1 times [2024-11-08 14:25:19,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:19,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951237183] [2024-11-08 14:25:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:19,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:25:19,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898266581] [2024-11-08 14:25:19,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:19,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:19,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:19,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:25:19,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 14:25:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:19,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 14:25:19,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 14:25:19,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:25:19,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:19,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951237183] [2024-11-08 14:25:19,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:25:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898266581] [2024-11-08 14:25:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898266581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:25:19,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:25:19,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:25:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990466836] [2024-11-08 14:25:19,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:25:19,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:25:19,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:19,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:25:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:25:19,211 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-08 14:25:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:19,259 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-11-08 14:25:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:25:19,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 46 [2024-11-08 14:25:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:19,263 INFO L225 Difference]: With dead ends: 58 [2024-11-08 14:25:19,263 INFO L226 Difference]: Without dead ends: 56 [2024-11-08 14:25:19,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:25:19,265 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:19,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 146 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:25:19,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-08 14:25:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2024-11-08 14:25:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 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) [2024-11-08 14:25:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2024-11-08 14:25:19,280 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 46 [2024-11-08 14:25:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:19,280 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2024-11-08 14:25:19,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-08 14:25:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2024-11-08 14:25:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 14:25:19,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:19,282 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, 1] [2024-11-08 14:25:19,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 14:25:19,486 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 [2024-11-08 14:25:19,487 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:19,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:19,487 INFO L85 PathProgramCache]: Analyzing trace with hash -670274197, now seen corresponding path program 1 times [2024-11-08 14:25:19,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:19,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150437051] [2024-11-08 14:25:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:19,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:25:19,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858892653] [2024-11-08 14:25:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:19,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:19,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:19,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:25:19,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 14:25:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:19,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 14:25:19,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 14:25:19,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:19,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:19,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150437051] [2024-11-08 14:25:19,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:25:19,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858892653] [2024-11-08 14:25:19,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858892653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:19,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:25:19,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-08 14:25:19,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403855549] [2024-11-08 14:25:19,942 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:19,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 14:25:19,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 14:25:19,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:25:19,945 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-08 14:25:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:20,073 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2024-11-08 14:25:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 14:25:20,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 56 [2024-11-08 14:25:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:20,075 INFO L225 Difference]: With dead ends: 62 [2024-11-08 14:25:20,075 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 14:25:20,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 14:25:20,076 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:20,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 161 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:25:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 14:25:20,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-08 14:25:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 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) [2024-11-08 14:25:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2024-11-08 14:25:20,097 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 56 [2024-11-08 14:25:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:20,098 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2024-11-08 14:25:20,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-08 14:25:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2024-11-08 14:25:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 14:25:20,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:20,101 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, 1] [2024-11-08 14:25:20,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 14:25:20,301 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 [2024-11-08 14:25:20,302 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:20,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:20,303 INFO L85 PathProgramCache]: Analyzing trace with hash 815241237, now seen corresponding path program 1 times [2024-11-08 14:25:20,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:20,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481410] [2024-11-08 14:25:20,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:20,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:25:20,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151123147] [2024-11-08 14:25:20,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:20,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:20,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:20,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:25:20,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 14:25:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:20,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 14:25:20,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 14:25:20,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 14:25:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481410] [2024-11-08 14:25:20,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:25:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151123147] [2024-11-08 14:25:20,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151123147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:25:20,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:25:20,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2024-11-08 14:25:20,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747497453] [2024-11-08 14:25:20,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:20,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 14:25:20,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:20,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 14:25:20,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:25:20,566 INFO L87 Difference]: Start difference. First operand 59 states and 73 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, (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) [2024-11-08 14:25:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:20,690 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2024-11-08 14:25:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 14:25:20,691 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, (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 63 [2024-11-08 14:25:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:20,693 INFO L225 Difference]: With dead ends: 87 [2024-11-08 14:25:20,693 INFO L226 Difference]: Without dead ends: 85 [2024-11-08 14:25:20,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:25:20,694 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:20,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 156 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:25:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-08 14:25:20,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 55. [2024-11-08 14:25:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 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) [2024-11-08 14:25:20,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2024-11-08 14:25:20,709 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 63 [2024-11-08 14:25:20,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:20,709 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2024-11-08 14:25:20,709 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, (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) [2024-11-08 14:25:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2024-11-08 14:25:20,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 14:25:20,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:20,711 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, 1] [2024-11-08 14:25:20,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 14:25:20,911 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 [2024-11-08 14:25:20,912 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:20,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:20,912 INFO L85 PathProgramCache]: Analyzing trace with hash -759965185, now seen corresponding path program 1 times [2024-11-08 14:25:20,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:20,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303846399] [2024-11-08 14:25:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:20,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:25:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:25:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:25:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:25:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 14:25:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 14:25:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 14:25:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 14:25:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 14:25:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 14:25:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-08 14:25:21,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:21,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303846399] [2024-11-08 14:25:21,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303846399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:21,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456575827] [2024-11-08 14:25:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:21,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:21,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:21,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:25:21,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 14:25:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 14:25:21,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-08 14:25:21,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-08 14:25:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456575827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:25:21,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:25:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-08 14:25:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005359662] [2024-11-08 14:25:21,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:21,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 14:25:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:21,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 14:25:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-08 14:25:21,417 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-08 14:25:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:21,613 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2024-11-08 14:25:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 14:25:21,614 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 65 [2024-11-08 14:25:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:21,615 INFO L225 Difference]: With dead ends: 102 [2024-11-08 14:25:21,615 INFO L226 Difference]: Without dead ends: 94 [2024-11-08 14:25:21,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 141 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-08 14:25:21,617 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 32 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:21,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 270 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:25:21,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-08 14:25:21,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2024-11-08 14:25:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 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) [2024-11-08 14:25:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2024-11-08 14:25:21,641 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 65 [2024-11-08 14:25:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:21,641 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2024-11-08 14:25:21,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-08 14:25:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2024-11-08 14:25:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 14:25:21,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:21,643 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, 1] [2024-11-08 14:25:21,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 14:25:21,846 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 [2024-11-08 14:25:21,847 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:21,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:21,848 INFO L85 PathProgramCache]: Analyzing trace with hash -696294669, now seen corresponding path program 1 times [2024-11-08 14:25:21,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:21,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482544963] [2024-11-08 14:25:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:21,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:25:21,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314964744] [2024-11-08 14:25:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:21,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:21,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:21,869 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:25:21,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 14:25:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:21,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 14:25:21,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 14:25:22,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:22,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:22,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482544963] [2024-11-08 14:25:22,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:25:22,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314964744] [2024-11-08 14:25:22,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314964744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:22,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:25:22,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-08 14:25:22,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756900303] [2024-11-08 14:25:22,110 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:22,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 14:25:22,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 14:25:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:25:22,111 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-11-08 14:25:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:22,232 INFO L93 Difference]: Finished difference Result 120 states and 169 transitions. [2024-11-08 14:25:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 14:25:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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 71 [2024-11-08 14:25:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:22,234 INFO L225 Difference]: With dead ends: 120 [2024-11-08 14:25:22,234 INFO L226 Difference]: Without dead ends: 117 [2024-11-08 14:25:22,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:25:22,235 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:22,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 198 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:25:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-08 14:25:22,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2024-11-08 14:25:22,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 63 states have internal predecessors, (74), 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) [2024-11-08 14:25:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2024-11-08 14:25:22,273 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 71 [2024-11-08 14:25:22,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:22,274 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2024-11-08 14:25:22,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-11-08 14:25:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2024-11-08 14:25:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 14:25:22,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:22,276 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, 1] [2024-11-08 14:25:22,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 14:25:22,479 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 [2024-11-08 14:25:22,480 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:22,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1352497678, now seen corresponding path program 2 times [2024-11-08 14:25:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:22,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899961624] [2024-11-08 14:25:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:22,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:25:22,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949053511] [2024-11-08 14:25:22,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:25:22,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:22,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:22,500 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:25:22,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 14:25:22,565 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:25:22,566 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:25:22,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 14:25:22,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 14:25:22,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:22,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:22,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899961624] [2024-11-08 14:25:22,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:25:22,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949053511] [2024-11-08 14:25:22,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949053511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:22,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:25:22,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-08 14:25:22,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312870302] [2024-11-08 14:25:22,778 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:22,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 14:25:22,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:22,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 14:25:22,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:25:22,780 INFO L87 Difference]: Start difference. First operand 114 states and 162 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-08 14:25:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:22,922 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2024-11-08 14:25:22,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 14:25:22,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 76 [2024-11-08 14:25:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:22,924 INFO L225 Difference]: With dead ends: 126 [2024-11-08 14:25:22,924 INFO L226 Difference]: Without dead ends: 124 [2024-11-08 14:25:22,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:25:22,925 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:22,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 216 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:25:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-08 14:25:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2024-11-08 14:25:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 69 states have internal predecessors, (80), 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) [2024-11-08 14:25:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2024-11-08 14:25:22,967 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 76 [2024-11-08 14:25:22,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:22,968 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2024-11-08 14:25:22,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-08 14:25:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2024-11-08 14:25:22,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-08 14:25:22,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:22,970 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, 1] [2024-11-08 14:25:22,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 14:25:23,173 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 [2024-11-08 14:25:23,174 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:23,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash -421153901, now seen corresponding path program 3 times [2024-11-08 14:25:23,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:23,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619593369] [2024-11-08 14:25:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:23,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:25:23,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612457187] [2024-11-08 14:25:23,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:25:23,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:23,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:23,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:25:23,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 14:25:23,265 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 14:25:23,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:25:23,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 14:25:23,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 43 proven. 20 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-08 14:25:24,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:24,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:24,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619593369] [2024-11-08 14:25:24,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:25:24,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612457187] [2024-11-08 14:25:24,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612457187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:24,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:25:24,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-08 14:25:24,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168107242] [2024-11-08 14:25:24,615 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:24,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 14:25:24,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 14:25:24,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-08 14:25:24,616 INFO L87 Difference]: Start difference. First operand 122 states and 168 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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) [2024-11-08 14:25:25,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:25,039 INFO L93 Difference]: Finished difference Result 134 states and 178 transitions. [2024-11-08 14:25:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 14:25:25,039 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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 81 [2024-11-08 14:25:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:25,042 INFO L225 Difference]: With dead ends: 134 [2024-11-08 14:25:25,043 INFO L226 Difference]: Without dead ends: 132 [2024-11-08 14:25:25,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-08 14:25:25,044 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 39 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:25,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 241 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:25:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-08 14:25:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2024-11-08 14:25:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 73 states have (on average 1.178082191780822) internal successors, (86), 75 states have internal predecessors, (86), 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) [2024-11-08 14:25:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 174 transitions. [2024-11-08 14:25:25,084 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 174 transitions. Word has length 81 [2024-11-08 14:25:25,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:25,084 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 174 transitions. [2024-11-08 14:25:25,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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) [2024-11-08 14:25:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 174 transitions. [2024-11-08 14:25:25,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-08 14:25:25,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:25,086 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, 1] [2024-11-08 14:25:25,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 14:25:25,286 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 [2024-11-08 14:25:25,286 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:25,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:25,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1712962370, now seen corresponding path program 1 times [2024-11-08 14:25:25,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:25,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777193285] [2024-11-08 14:25:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:25,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:25:25,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777485060] [2024-11-08 14:25:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:25,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:25,313 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) [2024-11-08 14:25:25,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 14:25:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:25,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-08 14:25:25,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-08 14:25:25,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-08 14:25:26,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:26,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777193285] [2024-11-08 14:25:26,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:25:26,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777485060] [2024-11-08 14:25:26,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777485060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:25:26,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:25:26,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-11-08 14:25:26,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810385001] [2024-11-08 14:25:26,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:26,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 14:25:26,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:26,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 14:25:26,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-08 14:25:26,652 INFO L87 Difference]: Start difference. First operand 130 states and 174 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 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) [2024-11-08 14:25:29,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:29,087 INFO L93 Difference]: Finished difference Result 230 states and 337 transitions. [2024-11-08 14:25:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 14:25:29,088 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 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 87 [2024-11-08 14:25:29,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:29,090 INFO L225 Difference]: With dead ends: 230 [2024-11-08 14:25:29,091 INFO L226 Difference]: Without dead ends: 226 [2024-11-08 14:25:29,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 14:25:29,092 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 75 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:29,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 459 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 14:25:29,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-08 14:25:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2024-11-08 14:25:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 118 states have internal predecessors, (142), 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) [2024-11-08 14:25:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 328 transitions. [2024-11-08 14:25:29,185 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 328 transitions. Word has length 87 [2024-11-08 14:25:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:29,186 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 328 transitions. [2024-11-08 14:25:29,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 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) [2024-11-08 14:25:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 328 transitions. [2024-11-08 14:25:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-08 14:25:29,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:29,187 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, 1] [2024-11-08 14:25:29,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 14:25:29,391 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 [2024-11-08 14:25:29,392 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:29,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:29,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1006372811, now seen corresponding path program 4 times [2024-11-08 14:25:29,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:29,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730019436] [2024-11-08 14:25:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:29,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:25:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:25:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:25:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:25:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 14:25:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 14:25:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 14:25:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 14:25:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 14:25:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 14:25:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 14:25:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 14:25:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 14:25:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 14:25:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-08 14:25:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-08 14:25:29,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:29,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730019436] [2024-11-08 14:25:29,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730019436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:25:29,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:25:29,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:25:29,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975588773] [2024-11-08 14:25:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:25:29,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:25:29,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:29,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:25:29,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:25:29,549 INFO L87 Difference]: Start difference. First operand 223 states and 328 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2024-11-08 14:25:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:29,659 INFO L93 Difference]: Finished difference Result 276 states and 404 transitions. [2024-11-08 14:25:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 14:25:29,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 96 [2024-11-08 14:25:29,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:29,661 INFO L225 Difference]: With dead ends: 276 [2024-11-08 14:25:29,662 INFO L226 Difference]: Without dead ends: 202 [2024-11-08 14:25:29,663 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 [2024-11-08 14:25:29,663 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 6 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:29,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 171 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:25:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-08 14:25:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 190. [2024-11-08 14:25:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 101 states have internal predecessors, (115), 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) [2024-11-08 14:25:29,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 269 transitions. [2024-11-08 14:25:29,766 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 269 transitions. Word has length 96 [2024-11-08 14:25:29,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:29,767 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 269 transitions. [2024-11-08 14:25:29,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2024-11-08 14:25:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 269 transitions. [2024-11-08 14:25:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 14:25:29,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:29,769 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, 1] [2024-11-08 14:25:29,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 14:25:29,769 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:29,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1899970478, now seen corresponding path program 1 times [2024-11-08 14:25:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435172029] [2024-11-08 14:25:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:29,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:29,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:25:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:25:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:25:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:25:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 14:25:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 14:25:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 14:25:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 14:25:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 14:25:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 14:25:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-08 14:25:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 14:25:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-08 14:25:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 14:25:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 14:25:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 14:25:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 14:25:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-08 14:25:30,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:30,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435172029] [2024-11-08 14:25:30,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435172029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:30,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311331758] [2024-11-08 14:25:30,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:30,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:30,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:30,058 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) [2024-11-08 14:25:30,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 14:25:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:30,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 14:25:30,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-08 14:25:30,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-08 14:25:30,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311331758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:25:30,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:25:30,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-11-08 14:25:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332461297] [2024-11-08 14:25:30,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:30,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 14:25:30,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 14:25:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-08 14:25:30,354 INFO L87 Difference]: Start difference. First operand 190 states and 269 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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) [2024-11-08 14:25:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:30,691 INFO L93 Difference]: Finished difference Result 256 states and 363 transitions. [2024-11-08 14:25:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 14:25:30,691 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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 103 [2024-11-08 14:25:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:30,693 INFO L225 Difference]: With dead ends: 256 [2024-11-08 14:25:30,693 INFO L226 Difference]: Without dead ends: 169 [2024-11-08 14:25:30,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 234 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-08 14:25:30,697 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 47 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:30,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 293 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:25:30,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-08 14:25:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-08 14:25:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 89 states have (on average 1.146067415730337) internal successors, (102), 92 states have internal predecessors, (102), 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) [2024-11-08 14:25:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 232 transitions. [2024-11-08 14:25:30,753 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 232 transitions. Word has length 103 [2024-11-08 14:25:30,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:30,753 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 232 transitions. [2024-11-08 14:25:30,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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) [2024-11-08 14:25:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 232 transitions. [2024-11-08 14:25:30,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-08 14:25:30,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:30,755 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, 1] [2024-11-08 14:25:30,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 14:25:30,955 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 [2024-11-08 14:25:30,956 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:30,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:30,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1451333771, now seen corresponding path program 1 times [2024-11-08 14:25:30,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:30,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932860230] [2024-11-08 14:25:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:30,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:25:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:25:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:25:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:25:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 14:25:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 14:25:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 14:25:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 14:25:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 14:25:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 14:25:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 14:25:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 14:25:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 14:25:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 14:25:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 14:25:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 14:25:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 14:25:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-08 14:25:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-08 14:25:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-08 14:25:31,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:31,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932860230] [2024-11-08 14:25:31,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932860230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:31,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212419260] [2024-11-08 14:25:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:31,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:31,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:31,150 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) [2024-11-08 14:25:31,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 14:25:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:31,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 14:25:31,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 88 proven. 9 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-11-08 14:25:31,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-08 14:25:31,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212419260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:25:31,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:25:31,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-08 14:25:31,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584927421] [2024-11-08 14:25:31,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:31,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 14:25:31,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 14:25:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:25:31,359 INFO L87 Difference]: Start difference. First operand 169 states and 232 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2024-11-08 14:25:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:31,551 INFO L93 Difference]: Finished difference Result 195 states and 271 transitions. [2024-11-08 14:25:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 14:25:31,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 117 [2024-11-08 14:25:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:31,553 INFO L225 Difference]: With dead ends: 195 [2024-11-08 14:25:31,554 INFO L226 Difference]: Without dead ends: 183 [2024-11-08 14:25:31,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 269 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-08 14:25:31,554 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 17 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:31,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 325 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:25:31,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-08 14:25:31,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 164. [2024-11-08 14:25:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 88 states have internal predecessors, (98), 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) [2024-11-08 14:25:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 226 transitions. [2024-11-08 14:25:31,600 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 226 transitions. Word has length 117 [2024-11-08 14:25:31,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:31,601 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 226 transitions. [2024-11-08 14:25:31,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2024-11-08 14:25:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 226 transitions. [2024-11-08 14:25:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-08 14:25:31,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:31,602 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, 1] [2024-11-08 14:25:31,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 14:25:31,802 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 [2024-11-08 14:25:31,803 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:31,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:31,803 INFO L85 PathProgramCache]: Analyzing trace with hash -50105014, now seen corresponding path program 2 times [2024-11-08 14:25:31,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:31,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814548027] [2024-11-08 14:25:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:31,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:25:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:25:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:25:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:25:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 14:25:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 14:25:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 14:25:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 14:25:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 14:25:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 14:25:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 14:25:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 14:25:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 14:25:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 14:25:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 14:25:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 14:25:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 14:25:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-08 14:25:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-08 14:25:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-11-08 14:25:32,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:32,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814548027] [2024-11-08 14:25:32,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814548027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:32,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423652631] [2024-11-08 14:25:32,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:25:32,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:32,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:32,122 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) [2024-11-08 14:25:32,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 14:25:32,192 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:25:32,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:25:32,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 14:25:32,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 103 proven. 18 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-11-08 14:25:32,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-11-08 14:25:32,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423652631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:25:32,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:25:32,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-08 14:25:32,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569727185] [2024-11-08 14:25:32,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:32,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 14:25:32,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:32,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 14:25:32,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-08 14:25:32,517 INFO L87 Difference]: Start difference. First operand 164 states and 226 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2024-11-08 14:25:32,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:32,868 INFO L93 Difference]: Finished difference Result 197 states and 273 transitions. [2024-11-08 14:25:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 14:25:32,869 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) Word has length 118 [2024-11-08 14:25:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:32,871 INFO L225 Difference]: With dead ends: 197 [2024-11-08 14:25:32,871 INFO L226 Difference]: Without dead ends: 161 [2024-11-08 14:25:32,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2024-11-08 14:25:32,873 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 28 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:32,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 525 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:25:32,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-08 14:25:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-08 14:25:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 83 states have (on average 1.108433734939759) internal successors, (92), 85 states have internal predecessors, (92), 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) [2024-11-08 14:25:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 220 transitions. [2024-11-08 14:25:32,949 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 220 transitions. Word has length 118 [2024-11-08 14:25:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:32,952 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 220 transitions. [2024-11-08 14:25:32,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2024-11-08 14:25:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 220 transitions. [2024-11-08 14:25:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-08 14:25:32,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:32,955 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, 1] [2024-11-08 14:25:32,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 14:25:33,158 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 [2024-11-08 14:25:33,159 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:33,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:33,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1816082155, now seen corresponding path program 2 times [2024-11-08 14:25:33,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:33,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950864032] [2024-11-08 14:25:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:33,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:25:33,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356560139] [2024-11-08 14:25:33,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:25:33,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:33,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:33,183 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) [2024-11-08 14:25:33,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 14:25:33,269 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:25:33,269 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:25:33,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-08 14:25:33,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-11-08 14:25:34,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-08 14:25:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:35,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950864032] [2024-11-08 14:25:35,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:25:35,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356560139] [2024-11-08 14:25:35,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356560139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:25:35,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:25:35,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2024-11-08 14:25:35,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548049882] [2024-11-08 14:25:35,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:35,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 14:25:35,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:35,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 14:25:35,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-11-08 14:25:35,796 INFO L87 Difference]: Start difference. First operand 161 states and 220 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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) [2024-11-08 14:25:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:38,821 INFO L93 Difference]: Finished difference Result 271 states and 385 transitions. [2024-11-08 14:25:38,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 14:25:38,821 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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 134 [2024-11-08 14:25:38,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:38,823 INFO L225 Difference]: With dead ends: 271 [2024-11-08 14:25:38,823 INFO L226 Difference]: Without dead ends: 238 [2024-11-08 14:25:38,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 240 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 14:25:38,825 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 102 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:38,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 560 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 14:25:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-08 14:25:38,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 228. [2024-11-08 14:25:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 121 states have internal predecessors, (135), 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) [2024-11-08 14:25:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 321 transitions. [2024-11-08 14:25:38,923 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 321 transitions. Word has length 134 [2024-11-08 14:25:38,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:38,924 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 321 transitions. [2024-11-08 14:25:38,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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) [2024-11-08 14:25:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 321 transitions. [2024-11-08 14:25:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-08 14:25:38,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:38,926 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, 1] [2024-11-08 14:25:38,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 14:25:39,129 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 [2024-11-08 14:25:39,130 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:39,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash -56106900, now seen corresponding path program 2 times [2024-11-08 14:25:39,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:39,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740605746] [2024-11-08 14:25:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:39,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:25:39,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941236315] [2024-11-08 14:25:39,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:25:39,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:39,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:39,152 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) [2024-11-08 14:25:39,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 14:25:39,240 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:25:39,240 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:25:39,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-08 14:25:39,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 84 proven. 56 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-11-08 14:25:39,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 86 proven. 7 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-11-08 14:25:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740605746] [2024-11-08 14:25:40,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:25:40,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941236315] [2024-11-08 14:25:40,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941236315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:25:40,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:25:40,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 25 [2024-11-08 14:25:40,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4145436] [2024-11-08 14:25:40,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:40,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 14:25:40,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:40,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 14:25:40,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-11-08 14:25:40,059 INFO L87 Difference]: Start difference. First operand 228 states and 321 transitions. Second operand has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 10 states have call predecessors, (33), 9 states have call successors, (33) [2024-11-08 14:25:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:42,003 INFO L93 Difference]: Finished difference Result 244 states and 335 transitions. [2024-11-08 14:25:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 14:25:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 10 states have call predecessors, (33), 9 states have call successors, (33) Word has length 139 [2024-11-08 14:25:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:42,005 INFO L225 Difference]: With dead ends: 244 [2024-11-08 14:25:42,005 INFO L226 Difference]: Without dead ends: 231 [2024-11-08 14:25:42,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 14:25:42,006 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 66 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:42,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 481 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 14:25:42,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-08 14:25:42,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2024-11-08 14:25:42,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 121 states have (on average 1.115702479338843) internal successors, (135), 122 states have internal predecessors, (135), 91 states have call successors, (91), 17 states have call predecessors, (91), 17 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-08 14:25:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 316 transitions. [2024-11-08 14:25:42,103 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 316 transitions. Word has length 139 [2024-11-08 14:25:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:42,103 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 316 transitions. [2024-11-08 14:25:42,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 10 states have call predecessors, (33), 9 states have call successors, (33) [2024-11-08 14:25:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 316 transitions. [2024-11-08 14:25:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-08 14:25:42,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:42,105 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, 1] [2024-11-08 14:25:42,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 14:25:42,305 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 [2024-11-08 14:25:42,306 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:42,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash -645167759, now seen corresponding path program 3 times [2024-11-08 14:25:42,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:42,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598581450] [2024-11-08 14:25:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:42,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:25:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:25:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:25:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:25:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 14:25:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 14:25:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 14:25:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 14:25:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 14:25:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 14:25:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-08 14:25:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 14:25:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-08 14:25:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 14:25:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-08 14:25:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 14:25:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-08 14:25:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-08 14:25:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-08 14:25:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-08 14:25:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-08 14:25:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-08 14:25:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-08 14:25:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-08 14:25:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 54 proven. 51 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-11-08 14:25:42,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:42,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598581450] [2024-11-08 14:25:42,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598581450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:42,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474507796] [2024-11-08 14:25:42,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:25:42,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:42,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:42,643 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) [2024-11-08 14:25:42,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 14:25:42,718 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 14:25:42,718 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:25:42,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 14:25:42,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 86 proven. 52 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2024-11-08 14:25:43,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:43,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474507796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:43,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:25:43,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 20 [2024-11-08 14:25:43,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080161844] [2024-11-08 14:25:43,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:43,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 14:25:43,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 14:25:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-11-08 14:25:43,900 INFO L87 Difference]: Start difference. First operand 230 states and 316 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) [2024-11-08 14:25:44,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:44,886 INFO L93 Difference]: Finished difference Result 296 states and 399 transitions. [2024-11-08 14:25:44,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 14:25:44,887 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) Word has length 142 [2024-11-08 14:25:44,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:44,888 INFO L225 Difference]: With dead ends: 296 [2024-11-08 14:25:44,888 INFO L226 Difference]: Without dead ends: 184 [2024-11-08 14:25:44,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 14:25:44,890 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 72 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:44,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 544 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:25:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-08 14:25:44,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 170. [2024-11-08 14:25:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 92 states have (on average 1.0978260869565217) internal successors, (101), 93 states have internal predecessors, (101), 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) [2024-11-08 14:25:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 226 transitions. [2024-11-08 14:25:44,968 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 226 transitions. Word has length 142 [2024-11-08 14:25:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:44,968 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 226 transitions. [2024-11-08 14:25:44,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) [2024-11-08 14:25:44,968 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 226 transitions. [2024-11-08 14:25:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-08 14:25:44,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:25:44,970 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1] [2024-11-08 14:25:44,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 14:25:45,170 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 [2024-11-08 14:25:45,171 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:25:45,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:25:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash 997653913, now seen corresponding path program 4 times [2024-11-08 14:25:45,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:25:45,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676645617] [2024-11-08 14:25:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:25:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:25:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:25:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:25:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:25:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:25:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 14:25:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 14:25:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 14:25:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 14:25:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 14:25:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 14:25:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 14:25:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 14:25:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 14:25:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 14:25:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 14:25:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 14:25:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 14:25:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-08 14:25:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-11-08 14:25:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-08 14:25:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-08 14:25:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-08 14:25:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-08 14:25:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-08 14:25:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-08 14:25:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-11-08 14:25:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-08 14:25:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-08 14:25:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:25:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-08 14:25:45,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:25:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676645617] [2024-11-08 14:25:45,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676645617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:25:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726038978] [2024-11-08 14:25:45,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:25:45,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:25:45,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:25:45,536 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) [2024-11-08 14:25:45,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 14:25:45,624 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:25:45,624 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:25:45,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 14:25:45,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:25:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 234 proven. 68 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2024-11-08 14:25:45,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:25:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-08 14:25:45,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726038978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:25:45,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:25:45,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-11-08 14:25:45,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008949984] [2024-11-08 14:25:45,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:25:45,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 14:25:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:25:45,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 14:25:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-08 14:25:45,926 INFO L87 Difference]: Start difference. First operand 170 states and 226 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 17 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (67), 17 states have call predecessors, (67), 17 states have call successors, (67) [2024-11-08 14:25:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:25:46,240 INFO L93 Difference]: Finished difference Result 174 states and 229 transitions. [2024-11-08 14:25:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 14:25:46,240 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 17 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (67), 17 states have call predecessors, (67), 17 states have call successors, (67) Word has length 167 [2024-11-08 14:25:46,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:25:46,241 INFO L225 Difference]: With dead ends: 174 [2024-11-08 14:25:46,241 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 14:25:46,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 375 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2024-11-08 14:25:46,244 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 22 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:25:46,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 674 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:25:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 14:25:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 14:25:46,245 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) [2024-11-08 14:25:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 14:25:46,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 167 [2024-11-08 14:25:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:25:46,246 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 14:25:46,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 17 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (67), 17 states have call predecessors, (67), 17 states have call successors, (67) [2024-11-08 14:25:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 14:25:46,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 14:25:46,249 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 14:25:46,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 14:25:46,454 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 [2024-11-08 14:25:46,457 INFO L407 BasicCegarLoop]: Path program histogram: [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:25:46,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 14:25:50,195 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 14:25:50,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 02:25:50 BoogieIcfgContainer [2024-11-08 14:25:50,239 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 14:25:50,240 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 14:25:50,240 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 14:25:50,240 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 14:25:50,240 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:25:16" (3/4) ... [2024-11-08 14:25:50,244 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 14:25:50,248 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-08 14:25:50,248 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-08 14:25:50,253 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-08 14:25:50,253 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 14:25:50,254 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 14:25:50,254 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 14:25:50,355 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 14:25:50,355 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-08 14:25:50,356 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 14:25:50,356 INFO L158 Benchmark]: Toolchain (without parser) took 34247.49ms. Allocated memory was 182.5MB in the beginning and 383.8MB in the end (delta: 201.3MB). Free memory was 124.1MB in the beginning and 189.8MB in the end (delta: -65.8MB). Peak memory consumption was 135.1MB. Max. memory is 16.1GB. [2024-11-08 14:25:50,356 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 49.1MB in the beginning and 49.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 14:25:50,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.82ms. Allocated memory is still 182.5MB. Free memory was 124.1MB in the beginning and 153.2MB in the end (delta: -29.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 14:25:50,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.84ms. Allocated memory is still 182.5MB. Free memory was 153.2MB in the beginning and 151.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:25:50,357 INFO L158 Benchmark]: Boogie Preprocessor took 34.32ms. Allocated memory is still 182.5MB. Free memory was 151.1MB in the beginning and 149.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:25:50,357 INFO L158 Benchmark]: RCFGBuilder took 312.18ms. Allocated memory is still 182.5MB. Free memory was 149.9MB in the beginning and 136.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 14:25:50,358 INFO L158 Benchmark]: TraceAbstraction took 33425.66ms. Allocated memory was 182.5MB in the beginning and 383.8MB in the end (delta: 201.3MB). Free memory was 135.2MB in the beginning and 195.1MB in the end (delta: -59.9MB). Peak memory consumption was 215.0MB. Max. memory is 16.1GB. [2024-11-08 14:25:50,358 INFO L158 Benchmark]: Witness Printer took 116.08ms. Allocated memory is still 383.8MB. Free memory was 195.1MB in the beginning and 189.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 14:25:50,361 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 49.1MB in the beginning and 49.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.82ms. Allocated memory is still 182.5MB. Free memory was 124.1MB in the beginning and 153.2MB in the end (delta: -29.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.84ms. Allocated memory is still 182.5MB. Free memory was 153.2MB in the beginning and 151.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.32ms. Allocated memory is still 182.5MB. Free memory was 151.1MB in the beginning and 149.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 312.18ms. Allocated memory is still 182.5MB. Free memory was 149.9MB in the beginning and 136.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 33425.66ms. Allocated memory was 182.5MB in the beginning and 383.8MB in the end (delta: 201.3MB). Free memory was 135.2MB in the beginning and 195.1MB in the end (delta: -59.9MB). Peak memory consumption was 215.0MB. Max. memory is 16.1GB. * Witness Printer took 116.08ms. Allocated memory is still 383.8MB. Free memory was 195.1MB in the beginning and 189.8MB 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, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.6s, OverallIterations: 19, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 666 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 584 mSDsluCounter, 5775 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4942 mSDsCounter, 680 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4452 IncrementalHoareTripleChecker+Invalid, 5132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 680 mSolverCounterUnsat, 833 mSDtfsCounter, 4452 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3064 GetRequests, 2699 SyntacticMatches, 26 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=17, InterpolantAutomatonStates: 239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 117 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 3227 NumberOfCodeBlocks, 3128 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 3391 ConstructedInterpolants, 0 QuantifiedInterpolants, 11954 SizeOfPredicates, 51 NumberOfNonLiveVariables, 3490 ConjunctsInSsa, 405 ConjunctsInUnsatCore, 35 InterpolantComputations, 4 PerfectInterpolantSequences, 12114/12887 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))) && (a == x)) && (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)) || ((((((((((((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))) || (((((((((((long long) x + 1) <= y) && (p == 1)) && (y <= 2)) && (((__int128) b + 1) <= x)) && (r == 0)) && (((__int128) 2 + q) == 0)) && (a == x)) && (y == ((__int128) ((long long) 2 * x) + b))) && (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! [2024-11-08 14:25:50,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE