./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 4da533f9027cb26869f2cd2349cd7115ebf62144e1d11b018683e8601f934a1d --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 19:44:22,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:44:22,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:44:22,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:44:22,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:44:22,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:44:22,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:44:22,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:44:22,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:44:22,758 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:44:22,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:44:22,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:44:22,759 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:44:22,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:44:22,762 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:44:22,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:44:22,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:44:22,762 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:44:22,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:44:22,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:44:22,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:44:22,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:44:22,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:44:22,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:44:22,763 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:44:22,763 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:44:22,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:44:22,763 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:44:22,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:44:22,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:44:22,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:44:22,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:44:22,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:44:22,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:44:22,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:44:22,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:44:22,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:44:22,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:44:22,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:44:22,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:44:22,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:44:22,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:44:22,767 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4da533f9027cb26869f2cd2349cd7115ebf62144e1d11b018683e8601f934a1d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:44:22,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:44:22,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:44:22,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:44:22,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:44:22,979 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:44:22,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2024-09-11 19:44:24,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:44:24,323 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:44:24,324 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2024-09-11 19:44:24,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/725aba86f/fec78f0a642c4042ae41a66dcf61ce54/FLAGfb86136a3 [2024-09-11 19:44:24,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/725aba86f/fec78f0a642c4042ae41a66dcf61ce54 [2024-09-11 19:44:24,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:44:24,343 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:44:24,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:44:24,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:44:24,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:44:24,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33579f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24, skipping insertion in model container [2024-09-11 19:44:24,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:44:24,492 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2024-09-11 19:44:24,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:44:24,523 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:44:24,538 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2024-09-11 19:44:24,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:44:24,562 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:44:24,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24 WrapperNode [2024-09-11 19:44:24,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:44:24,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:44:24,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:44:24,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:44:24,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,584 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-09-11 19:44:24,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:44:24,589 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:44:24,589 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:44:24,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:44:24,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,610 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,621 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]. [2024-09-11 19:44:24,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,624 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,626 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:44:24,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:44:24,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:44:24,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:44:24,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (1/1) ... [2024-09-11 19:44:24,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:44:24,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:44:24,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-11 19:44:24,672 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-11 19:44:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:44:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-11 19:44:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-11 19:44:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:44:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:44:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:44:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-11 19:44:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-11 19:44:24,752 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:44:24,754 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:44:24,864 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-11 19:44:24,864 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:44:24,890 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:44:24,891 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-11 19:44:24,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:44:24 BoogieIcfgContainer [2024-09-11 19:44:24,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:44:24,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:44:24,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:44:24,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:44:24,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:44:24" (1/3) ... [2024-09-11 19:44:24,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7cbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:44:24, skipping insertion in model container [2024-09-11 19:44:24,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:44:24" (2/3) ... [2024-09-11 19:44:24,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7cbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:44:24, skipping insertion in model container [2024-09-11 19:44:24,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:44:24" (3/3) ... [2024-09-11 19:44:24,896 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound100.c [2024-09-11 19:44:24,908 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:44:24,908 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:44:24,947 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:44:24,951 INFO L336 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=All, 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;@42a50557, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:44:24,952 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:44:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-11 19:44:24,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:44:24,961 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:44:24,961 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:44:24,962 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:44:24,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:24,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1096708698, now seen corresponding path program 1 times [2024-09-11 19:44:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:44:24,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594495515] [2024-09-11 19:44:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:24,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:44:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:25,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:44:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:25,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:44:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:25,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:44:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:44:25,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:44:25,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594495515] [2024-09-11 19:44:25,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594495515] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:44:25,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:44:25,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:44:25,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027907785] [2024-09-11 19:44:25,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:44:25,109 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:44:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:44:25,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:44:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:44:25,126 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-11 19:44:25,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:44:25,154 INFO L93 Difference]: Finished difference Result 60 states and 99 transitions. [2024-09-11 19:44:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:44:25,157 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-11 19:44:25,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:44:25,162 INFO L225 Difference]: With dead ends: 60 [2024-09-11 19:44:25,162 INFO L226 Difference]: Without dead ends: 29 [2024-09-11 19:44:25,164 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:44:25,167 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:44:25,167 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:44:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-11 19:44:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-11 19:44:25,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-11 19:44:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2024-09-11 19:44:25,192 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 23 [2024-09-11 19:44:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:44:25,192 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2024-09-11 19:44:25,192 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-11 19:44:25,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2024-09-11 19:44:25,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:44:25,194 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:44:25,194 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:44:25,194 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:44:25,194 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:44:25,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2049551268, now seen corresponding path program 1 times [2024-09-11 19:44:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:44:25,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113318780] [2024-09-11 19:44:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:44:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:44:25,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425862484] [2024-09-11 19:44:25,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:25,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:44:25,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:44:25,234 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 19:44:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:25,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:44:25,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:44:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:44:25,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:44:25,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:44:25,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113318780] [2024-09-11 19:44:25,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:44:25,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425862484] [2024-09-11 19:44:25,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425862484] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:44:25,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:44:25,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:44:25,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894720436] [2024-09-11 19:44:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:44:25,363 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:44:25,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:44:25,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:44:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:44:25,365 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-11 19:44:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:44:25,416 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-09-11 19:44:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:44:25,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-09-11 19:44:25,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:44:25,417 INFO L225 Difference]: With dead ends: 40 [2024-09-11 19:44:25,417 INFO L226 Difference]: Without dead ends: 38 [2024-09-11 19:44:25,418 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:44:25,418 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 124 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 [2024-09-11 19:44:25,419 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 124 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:44:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-11 19:44:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2024-09-11 19:44:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-11 19:44:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-09-11 19:44:25,429 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 23 [2024-09-11 19:44:25,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:44:25,430 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-09-11 19:44:25,430 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-11 19:44:25,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-09-11 19:44:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-11 19:44:25,431 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:44:25,431 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:44:25,443 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 19:44:25,631 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:25,632 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:44:25,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:25,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1906772284, now seen corresponding path program 1 times [2024-09-11 19:44:25,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:44:25,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787251348] [2024-09-11 19:44:25,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:25,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:44:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:44:25,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377874796] [2024-09-11 19:44:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:25,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:25,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:44:25,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:44:25,664 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 19:44:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:25,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:44:25,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:44:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:44:25,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:44:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:44:25,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787251348] [2024-09-11 19:44:25,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:44:25,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377874796] [2024-09-11 19:44:25,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377874796] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:44:25,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:44:25,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:44:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625779904] [2024-09-11 19:44:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:44:25,759 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:44:25,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:44:25,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:44:25,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:44:25,761 INFO L87 Difference]: Start difference. First operand 35 states and 44 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-11 19:44:25,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:44:25,828 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2024-09-11 19:44:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:44:25,829 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-11 19:44:25,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:44:25,831 INFO L225 Difference]: With dead ends: 52 [2024-09-11 19:44:25,831 INFO L226 Difference]: Without dead ends: 49 [2024-09-11 19:44:25,831 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:44:25,832 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:44:25,832 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 113 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:44:25,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-11 19:44:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-09-11 19:44:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-11 19:44:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2024-09-11 19:44:25,843 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 28 [2024-09-11 19:44:25,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:44:25,844 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2024-09-11 19:44:25,844 INFO L475 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-11 19:44:25,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2024-09-11 19:44:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:44:25,845 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:44:25,845 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-11 19:44:25,857 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-11 19:44:26,047 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:26,047 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:44:26,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:26,048 INFO L85 PathProgramCache]: Analyzing trace with hash 878585613, now seen corresponding path program 1 times [2024-09-11 19:44:26,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:44:26,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865216342] [2024-09-11 19:44:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:26,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:44:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:44:26,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3019459] [2024-09-11 19:44:26,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:26,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:26,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:44:26,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:44:26,085 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 19:44:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:26,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:44:26,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:44:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-11 19:44:26,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:44:26,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:44:26,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865216342] [2024-09-11 19:44:26,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:44:26,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3019459] [2024-09-11 19:44:26,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3019459] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:44:26,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:44:26,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:44:26,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247493511] [2024-09-11 19:44:26,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:44:26,169 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:44:26,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:44:26,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:44:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:44:26,170 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-11 19:44:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:44:26,235 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-09-11 19:44:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:44:26,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2024-09-11 19:44:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:44:26,236 INFO L225 Difference]: With dead ends: 74 [2024-09-11 19:44:26,236 INFO L226 Difference]: Without dead ends: 72 [2024-09-11 19:44:26,237 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:44:26,237 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:44:26,238 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 126 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:44:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-11 19:44:26,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2024-09-11 19:44:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-11 19:44:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2024-09-11 19:44:26,258 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 35 [2024-09-11 19:44:26,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:44:26,258 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2024-09-11 19:44:26,258 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-11 19:44:26,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2024-09-11 19:44:26,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-11 19:44:26,259 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:44:26,259 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 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] [2024-09-11 19:44:26,271 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-11 19:44:26,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:26,460 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:44:26,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash -170967411, now seen corresponding path program 1 times [2024-09-11 19:44:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:44:26,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359229149] [2024-09-11 19:44:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:26,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:44:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:26,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:44:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:26,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:44:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:26,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:44:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:26,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-11 19:44:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:26,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-11 19:44:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:26,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-11 19:44:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:26,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 19:44:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:44:26,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:44:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359229149] [2024-09-11 19:44:26,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359229149] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:44:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629883781] [2024-09-11 19:44:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:26,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:26,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:44:26,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:44:26,748 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 19:44:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:26,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-11 19:44:26,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:44:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:44:26,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:44:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:44:26,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629883781] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:44:26,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:44:26,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2024-09-11 19:44:26,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556858143] [2024-09-11 19:44:26,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:44:26,958 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 19:44:26,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:44:26,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 19:44:26,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:44:26,959 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-11 19:44:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:44:27,061 INFO L93 Difference]: Finished difference Result 73 states and 94 transitions. [2024-09-11 19:44:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:44:27,062 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 45 [2024-09-11 19:44:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:44:27,063 INFO L225 Difference]: With dead ends: 73 [2024-09-11 19:44:27,063 INFO L226 Difference]: Without dead ends: 71 [2024-09-11 19:44:27,064 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:44:27,064 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:44:27,065 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 186 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:44:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-11 19:44:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2024-09-11 19:44:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 41 states have internal predecessors, (45), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-11 19:44:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2024-09-11 19:44:27,083 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 45 [2024-09-11 19:44:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:44:27,084 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2024-09-11 19:44:27,084 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-11 19:44:27,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:27,084 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2024-09-11 19:44:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-11 19:44:27,085 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:44:27,085 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 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] [2024-09-11 19:44:27,098 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-11 19:44:27,285 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:27,286 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:44:27,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:27,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1378270461, now seen corresponding path program 1 times [2024-09-11 19:44:27,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:44:27,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203175138] [2024-09-11 19:44:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:27,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:44:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:44:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:44:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:44:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-11 19:44:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-11 19:44:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-11 19:44:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 19:44:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-11 19:44:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-11 19:44:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:44:27,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203175138] [2024-09-11 19:44:27,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203175138] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:44:27,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240413325] [2024-09-11 19:44:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:27,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:27,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:44:27,431 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:44:27,431 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 19:44:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:44:27,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:44:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-11 19:44:27,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:44:27,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240413325] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:44:27,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 19:44:27,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-11 19:44:27,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669534521] [2024-09-11 19:44:27,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:44:27,561 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-11 19:44:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:44:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-11 19:44:27,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:44:27,563 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-11 19:44:27,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:44:27,640 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2024-09-11 19:44:27,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:44:27,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2024-09-11 19:44:27,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:44:27,641 INFO L225 Difference]: With dead ends: 82 [2024-09-11 19:44:27,641 INFO L226 Difference]: Without dead ends: 80 [2024-09-11 19:44:27,642 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:44:27,642 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:44:27,642 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 159 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:44:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-11 19:44:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2024-09-11 19:44:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 46 states have internal predecessors, (48), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-11 19:44:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-09-11 19:44:27,653 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 51 [2024-09-11 19:44:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:44:27,653 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-09-11 19:44:27,653 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-11 19:44:27,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:27,654 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-09-11 19:44:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-11 19:44:27,655 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:44:27,655 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 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] [2024-09-11 19:44:27,667 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 19:44:27,855 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-11 19:44:27,855 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:44:27,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:27,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1550111725, now seen corresponding path program 1 times [2024-09-11 19:44:27,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:44:27,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896978178] [2024-09-11 19:44:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:27,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:44:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:44:27,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362041742] [2024-09-11 19:44:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:27,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:27,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:44:27,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:44:27,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 19:44:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:27,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-11 19:44:27,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:44:28,129 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-11 19:44:28,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:44:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-11 19:44:28,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:44:28,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896978178] [2024-09-11 19:44:28,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:44:28,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362041742] [2024-09-11 19:44:28,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362041742] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-11 19:44:28,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 19:44:28,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-09-11 19:44:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665766697] [2024-09-11 19:44:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:44:28,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 19:44:28,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:44:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 19:44:28,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:44:28,307 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-11 19:44:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:44:28,424 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2024-09-11 19:44:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:44:28,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 58 [2024-09-11 19:44:28,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:44:28,426 INFO L225 Difference]: With dead ends: 81 [2024-09-11 19:44:28,426 INFO L226 Difference]: Without dead ends: 78 [2024-09-11 19:44:28,427 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:44:28,427 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:44:28,427 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 106 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:44:28,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-11 19:44:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-09-11 19:44:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 48 states have internal predecessors, (50), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-11 19:44:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2024-09-11 19:44:28,454 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 58 [2024-09-11 19:44:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:44:28,455 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2024-09-11 19:44:28,455 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-11 19:44:28,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:28,455 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2024-09-11 19:44:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-11 19:44:28,456 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:44:28,457 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 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] [2024-09-11 19:44:28,470 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-11 19:44:28,660 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:28,661 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:44:28,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:28,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1692835121, now seen corresponding path program 1 times [2024-09-11 19:44:28,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:44:28,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719086444] [2024-09-11 19:44:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:28,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:44:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:44:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:44:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:44:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-11 19:44:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-11 19:44:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-11 19:44:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 19:44:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-11 19:44:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-11 19:44:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-11 19:44:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-11 19:44:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-11 19:44:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-09-11 19:44:28,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:44:28,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719086444] [2024-09-11 19:44:28,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719086444] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:44:28,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102178680] [2024-09-11 19:44:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:28,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:28,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:44:28,803 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:44:28,804 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 19:44:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:28,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-11 19:44:28,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:44:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-09-11 19:44:28,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:44:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-09-11 19:44:28,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102178680] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:44:28,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:44:28,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-09-11 19:44:28,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336227521] [2024-09-11 19:44:28,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:44:28,965 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:44:28,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:44:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:44:28,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:44:28,966 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-09-11 19:44:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:44:29,073 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2024-09-11 19:44:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:44:29,073 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 74 [2024-09-11 19:44:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:44:29,075 INFO L225 Difference]: With dead ends: 88 [2024-09-11 19:44:29,075 INFO L226 Difference]: Without dead ends: 86 [2024-09-11 19:44:29,076 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:44:29,076 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:44:29,076 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 174 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:44:29,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-11 19:44:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 63. [2024-09-11 19:44:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-11 19:44:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-09-11 19:44:29,093 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 74 [2024-09-11 19:44:29,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:44:29,095 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-09-11 19:44:29,095 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-09-11 19:44:29,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:29,096 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-09-11 19:44:29,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-09-11 19:44:29,096 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:44:29,097 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:44:29,109 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-11 19:44:29,300 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:29,301 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:44:29,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:29,301 INFO L85 PathProgramCache]: Analyzing trace with hash -521649002, now seen corresponding path program 2 times [2024-09-11 19:44:29,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:44:29,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194779095] [2024-09-11 19:44:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:29,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:44:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:44:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:44:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:44:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-11 19:44:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-11 19:44:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-11 19:44:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 19:44:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-11 19:44:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-11 19:44:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-11 19:44:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-11 19:44:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-11 19:44:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-09-11 19:44:29,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:44:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194779095] [2024-09-11 19:44:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194779095] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:44:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606009199] [2024-09-11 19:44:29,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:44:29,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:29,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:44:29,423 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:44:29,424 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 19:44:29,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:44:29,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:44:29,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:44:29,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:44:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-09-11 19:44:29,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:44:29,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606009199] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:44:29,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 19:44:29,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-09-11 19:44:29,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376552227] [2024-09-11 19:44:29,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:44:29,507 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:44:29,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:44:29,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:44:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:44:29,507 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-11 19:44:29,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:44:29,596 INFO L93 Difference]: Finished difference Result 112 states and 136 transitions. [2024-09-11 19:44:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:44:29,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2024-09-11 19:44:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:44:29,598 INFO L225 Difference]: With dead ends: 112 [2024-09-11 19:44:29,598 INFO L226 Difference]: Without dead ends: 77 [2024-09-11 19:44:29,598 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:44:29,599 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:44:29,600 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 119 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:44:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-11 19:44:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2024-09-11 19:44:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-11 19:44:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-09-11 19:44:29,622 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 75 [2024-09-11 19:44:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:44:29,622 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-09-11 19:44:29,623 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-11 19:44:29,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-09-11 19:44:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-09-11 19:44:29,627 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:44:29,627 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:44:29,643 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-11 19:44:29,828 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:29,828 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:44:29,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:29,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1018524868, now seen corresponding path program 1 times [2024-09-11 19:44:29,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:44:29,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989829128] [2024-09-11 19:44:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:29,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:44:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:44:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:44:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:44:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-11 19:44:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-11 19:44:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-11 19:44:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 19:44:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-11 19:44:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-11 19:44:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-11 19:44:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-11 19:44:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-11 19:44:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-11 19:44:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-11 19:44:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-11 19:44:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-11 19:44:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-09-11 19:44:29,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:44:29,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989829128] [2024-09-11 19:44:29,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989829128] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:44:29,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859771080] [2024-09-11 19:44:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:44:29,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:44:29,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:44:29,952 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:44:29,953 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 19:44:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:44:29,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:44:30,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:44:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-09-11 19:44:30,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:44:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-09-11 19:44:30,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859771080] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:44:30,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:44:30,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-09-11 19:44:30,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928253672] [2024-09-11 19:44:30,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:44:30,304 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 19:44:30,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:44:30,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 19:44:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:44:30,305 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-09-11 19:44:30,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:44:30,828 INFO L93 Difference]: Finished difference Result 140 states and 181 transitions. [2024-09-11 19:44:30,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:44:30,828 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 98 [2024-09-11 19:44:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:44:30,829 INFO L225 Difference]: With dead ends: 140 [2024-09-11 19:44:30,829 INFO L226 Difference]: Without dead ends: 0 [2024-09-11 19:44:30,830 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 217 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:44:30,831 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 50 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:44:30,831 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 557 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:44:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-11 19:44:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-11 19:44:30,831 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) [2024-09-11 19:44:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-11 19:44:30,832 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2024-09-11 19:44:30,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:44:30,832 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-11 19:44:30,832 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-09-11 19:44:30,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:44:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-11 19:44:30,833 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-11 19:44:30,834 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-11 19:44:30,849 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-11 19:44:31,035 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-11 19:44:31,039 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:44:31,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-11 19:44:32,973 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-11 19:44:32,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 07:44:32 BoogieIcfgContainer [2024-09-11 19:44:32,991 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-11 19:44:32,991 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-11 19:44:32,991 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-11 19:44:32,992 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-11 19:44:32,992 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:44:24" (3/4) ... [2024-09-11 19:44:32,993 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-11 19:44:32,996 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-11 19:44:32,996 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-11 19:44:33,000 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-09-11 19:44:33,000 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-11 19:44:33,000 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-11 19:44:33,000 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-11 19:44:33,063 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-11 19:44:33,063 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-11 19:44:33,063 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-11 19:44:33,064 INFO L158 Benchmark]: Toolchain (without parser) took 8720.80ms. Allocated memory was 186.6MB in the beginning and 272.6MB in the end (delta: 86.0MB). Free memory was 118.0MB in the beginning and 194.5MB in the end (delta: -76.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2024-09-11 19:44:33,064 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 19:44:33,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.60ms. Allocated memory is still 186.6MB. Free memory was 117.8MB in the beginning and 106.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-11 19:44:33,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.91ms. Allocated memory is still 186.6MB. Free memory was 106.1MB in the beginning and 104.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 19:44:33,065 INFO L158 Benchmark]: Boogie Preprocessor took 54.83ms. Allocated memory is still 186.6MB. Free memory was 104.6MB in the beginning and 159.3MB in the end (delta: -54.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-11 19:44:33,065 INFO L158 Benchmark]: RCFGBuilder took 247.13ms. Allocated memory is still 186.6MB. Free memory was 159.1MB in the beginning and 146.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-11 19:44:33,065 INFO L158 Benchmark]: TraceAbstraction took 8098.77ms. Allocated memory was 186.6MB in the beginning and 272.6MB in the end (delta: 86.0MB). Free memory was 145.8MB in the beginning and 198.7MB in the end (delta: -52.8MB). Peak memory consumption was 116.7MB. Max. memory is 16.1GB. [2024-09-11 19:44:33,065 INFO L158 Benchmark]: Witness Printer took 72.12ms. Allocated memory is still 272.6MB. Free memory was 198.7MB in the beginning and 194.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-11 19:44:33,066 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.60ms. Allocated memory is still 186.6MB. Free memory was 117.8MB in the beginning and 106.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.91ms. Allocated memory is still 186.6MB. Free memory was 106.1MB in the beginning and 104.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.83ms. Allocated memory is still 186.6MB. Free memory was 104.6MB in the beginning and 159.3MB in the end (delta: -54.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 247.13ms. Allocated memory is still 186.6MB. Free memory was 159.1MB in the beginning and 146.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8098.77ms. Allocated memory was 186.6MB in the beginning and 272.6MB in the end (delta: 86.0MB). Free memory was 145.8MB in the beginning and 198.7MB in the end (delta: -52.8MB). Peak memory consumption was 116.7MB. Max. memory is 16.1GB. * Witness Printer took 72.12ms. Allocated memory is still 272.6MB. Free memory was 198.7MB in the beginning and 194.5MB in the end (delta: 4.2MB). 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: 17]: 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 142 mSDsluCounter, 1702 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1359 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 839 IncrementalHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 343 mSDtfsCounter, 839 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 941 GetRequests, 826 SyntacticMatches, 9 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 997 NumberOfCodeBlocks, 997 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1109 ConstructedInterpolants, 0 QuantifiedInterpolants, 2394 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1157 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 2406/2493 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: 64]: Location Invariant Derived location invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (b <= (r + y))) && (0 <= r)) && (x <= 100)) && ((b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) || (((((((((__int128) a * y) + r) == (b + x)) && (b <= y)) && (0 <= r)) && (x <= 100)) && (r == x)) && (q == 0))) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((b == 0) && (0 <= r)) && (x <= 100)) && (r == x)) && (q == 0)) && (a == 0)) || ((((((((__int128) r + 1) <= y) && (0 <= x)) && (x == (r + ((__int128) q * y)))) && (b <= y)) && (x <= 100)) && ((b + x) == ((((__int128) a * y) + r) + ((__int128) q * y))))) || ((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (x <= 100)) && (0 <= (r + y))) && ((b + x) == ((((__int128) a * y) + r) + ((__int128) q * y))))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-11 19:44:33,085 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE