./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Addition03-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/recursive/Addition03-1.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 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:04:27,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:04:27,728 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:04:27,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:04:27,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:04:27,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:04:27,765 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:04:27,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:04:27,766 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:04:27,767 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:04:27,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:04:27,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:04:27,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:04:27,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:04:27,770 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:04:27,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:04:27,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:04:27,771 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:04:27,771 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:04:27,772 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:04:27,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:04:27,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:04:27,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:04:27,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:04:27,773 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:04:27,774 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:04:27,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:04:27,774 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:04:27,774 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:04:27,775 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:04:27,775 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:04:27,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:04:27,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:04:27,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:04:27,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:04:27,776 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:04:27,777 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:04:27,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:04:27,777 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:04:27,777 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:04:27,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:04:27,778 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:04:27,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:04:28,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:04:28,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:04:28,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:04:28,085 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:04:28,085 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:04:28,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Addition03-1.c [2024-09-25 00:04:29,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:04:29,740 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:04:29,740 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c [2024-09-25 00:04:29,750 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/5f34376cc/b0b77edd115a4b92b7b96fb201137135/FLAGf1a1476aa [2024-09-25 00:04:29,788 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/5f34376cc/b0b77edd115a4b92b7b96fb201137135 [2024-09-25 00:04:29,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:04:29,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:04:29,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:04:29,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:04:29,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:04:29,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec56dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29, skipping insertion in model container [2024-09-25 00:04:29,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,824 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:04:29,964 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c[840,853] [2024-09-25 00:04:29,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:04:29,991 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:04:30,003 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c[840,853] [2024-09-25 00:04:30,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:04:30,018 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:04:30,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30 WrapperNode [2024-09-25 00:04:30,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:04:30,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:04:30,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:04:30,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:04:30,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,041 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:04:30,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:04:30,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:04:30,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:04:30,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:04:30,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,056 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,068 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]. [2024-09-25 00:04:30,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:04:30,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:04:30,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:04:30,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:04:30,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (1/1) ... [2024-09-25 00:04:30,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:04:30,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:30,122 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) [2024-09-25 00:04:30,127 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 [2024-09-25 00:04:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:04:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:04:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:04:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:04:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:04:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:04:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:04:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:04:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2024-09-25 00:04:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2024-09-25 00:04:30,241 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:04:30,244 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:04:30,410 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-25 00:04:30,413 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:04:30,443 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:04:30,443 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 00:04:30,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:30 BoogieIcfgContainer [2024-09-25 00:04:30,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:04:30,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:04:30,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:04:30,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:04:30,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:04:29" (1/3) ... [2024-09-25 00:04:30,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3feffdc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:30, skipping insertion in model container [2024-09-25 00:04:30,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:30" (2/3) ... [2024-09-25 00:04:30,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3feffdc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:30, skipping insertion in model container [2024-09-25 00:04:30,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:30" (3/3) ... [2024-09-25 00:04:30,457 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2024-09-25 00:04:30,475 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:04:30,476 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:04:30,548 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:04:30,557 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;@77a99029, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:04:30,557 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:04:30,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 00:04:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-25 00:04:30,569 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:30,570 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:30,570 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:30,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:30,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1490740627, now seen corresponding path program 1 times [2024-09-25 00:04:30,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:30,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447519808] [2024-09-25 00:04:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:30,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:30,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:04:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:04:30,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:30,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447519808] [2024-09-25 00:04:30,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447519808] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:04:30,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:04:30,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:04:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109515800] [2024-09-25 00:04:30,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:04:30,877 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:04:30,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:30,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:04:30,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:04:30,907 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 00:04:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:31,046 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-09-25 00:04:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:04:31,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-09-25 00:04:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:31,058 INFO L225 Difference]: With dead ends: 36 [2024-09-25 00:04:31,058 INFO L226 Difference]: Without dead ends: 24 [2024-09-25 00:04:31,061 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:04:31,066 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:31,068 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 58 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-25 00:04:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-09-25 00:04:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-25 00:04:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-09-25 00:04:31,138 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2024-09-25 00:04:31,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:31,157 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-09-25 00:04:31,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 00:04:31,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-09-25 00:04:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-25 00:04:31,159 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:31,160 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:31,160 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:04:31,161 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:31,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:31,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2027321068, now seen corresponding path program 1 times [2024-09-25 00:04:31,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:31,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133547732] [2024-09-25 00:04:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:31,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:04:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:04:31,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:31,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133547732] [2024-09-25 00:04:31,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133547732] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:04:31,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:04:31,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-25 00:04:31,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882458390] [2024-09-25 00:04:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:04:31,344 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-25 00:04:31,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-25 00:04:31,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-25 00:04:31,347 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 00:04:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:31,388 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-09-25 00:04:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-25 00:04:31,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-25 00:04:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:31,390 INFO L225 Difference]: With dead ends: 32 [2024-09-25 00:04:31,391 INFO L226 Difference]: Without dead ends: 24 [2024-09-25 00:04:31,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-25 00:04:31,394 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:31,394 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 54 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:04:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-25 00:04:31,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-09-25 00:04:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-25 00:04:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-09-25 00:04:31,416 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2024-09-25 00:04:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:31,417 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-09-25 00:04:31,417 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 00:04:31,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-09-25 00:04:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-25 00:04:31,421 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:31,422 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:31,422 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-25 00:04:31,422 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:31,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash 596179159, now seen corresponding path program 1 times [2024-09-25 00:04:31,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:31,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389431702] [2024-09-25 00:04:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:31,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:04:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:04:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389431702] [2024-09-25 00:04:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389431702] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:31,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476994201] [2024-09-25 00:04:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:31,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:31,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:31,689 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) [2024-09-25 00:04:31,691 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:04:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 00:04:31,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 00:04:31,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:04:32,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476994201] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:32,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:32,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-09-25 00:04:32,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496342291] [2024-09-25 00:04:32,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:32,076 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-25 00:04:32,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:32,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-25 00:04:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-09-25 00:04:32,077 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-25 00:04:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:32,263 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2024-09-25 00:04:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 00:04:32,264 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 20 [2024-09-25 00:04:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:32,267 INFO L225 Difference]: With dead ends: 57 [2024-09-25 00:04:32,268 INFO L226 Difference]: Without dead ends: 37 [2024-09-25 00:04:32,269 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-09-25 00:04:32,271 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:32,272 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 69 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-25 00:04:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-09-25 00:04:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-25 00:04:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-09-25 00:04:32,284 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 20 [2024-09-25 00:04:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:32,285 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-09-25 00:04:32,285 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-25 00:04:32,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-09-25 00:04:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-25 00:04:32,287 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:32,287 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:32,307 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:32,491 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:32,492 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:32,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1205196513, now seen corresponding path program 2 times [2024-09-25 00:04:32,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:32,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459074242] [2024-09-25 00:04:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:32,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:04:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:04:32,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:32,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459074242] [2024-09-25 00:04:32,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459074242] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:32,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216127706] [2024-09-25 00:04:32,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:04:32,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:32,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:32,863 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) [2024-09-25 00:04:32,866 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:04:32,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:04:32,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:32,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:04:32,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 00:04:33,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:04:33,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216127706] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:33,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:33,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 17 [2024-09-25 00:04:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110337327] [2024-09-25 00:04:33,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:33,595 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-25 00:04:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:33,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-25 00:04:33,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-09-25 00:04:33,596 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-25 00:04:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:33,762 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-09-25 00:04:33,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 00:04:33,763 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 34 [2024-09-25 00:04:33,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:33,765 INFO L225 Difference]: With dead ends: 49 [2024-09-25 00:04:33,765 INFO L226 Difference]: Without dead ends: 43 [2024-09-25 00:04:33,765 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2024-09-25 00:04:33,766 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:33,767 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 107 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-25 00:04:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-09-25 00:04:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (11), 8 states have call predecessors, (11), 5 states have call successors, (11) [2024-09-25 00:04:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-09-25 00:04:33,778 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 34 [2024-09-25 00:04:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:33,778 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-09-25 00:04:33,778 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-25 00:04:33,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-09-25 00:04:33,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-25 00:04:33,780 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:33,781 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:33,798 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 00:04:33,984 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:33,985 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:33,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:33,985 INFO L85 PathProgramCache]: Analyzing trace with hash -661240853, now seen corresponding path program 3 times [2024-09-25 00:04:33,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:33,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664453503] [2024-09-25 00:04:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:33,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:04:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 00:04:34,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664453503] [2024-09-25 00:04:34,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664453503] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522427920] [2024-09-25 00:04:34,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:04:34,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:34,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:34,358 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) [2024-09-25 00:04:34,360 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:04:34,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-25 00:04:34,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:34,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 00:04:34,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-09-25 00:04:34,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:04:35,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522427920] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:35,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:35,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 21 [2024-09-25 00:04:35,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339773027] [2024-09-25 00:04:35,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:35,698 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 00:04:35,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:35,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 00:04:35,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-09-25 00:04:35,700 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2024-09-25 00:04:35,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:35,877 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-09-25 00:04:35,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 00:04:35,877 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) Word has length 48 [2024-09-25 00:04:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:35,879 INFO L225 Difference]: With dead ends: 55 [2024-09-25 00:04:35,879 INFO L226 Difference]: Without dead ends: 49 [2024-09-25 00:04:35,879 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 94 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=513, Unknown=0, NotChecked=0, Total=756 [2024-09-25 00:04:35,880 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:35,881 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 123 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:35,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-25 00:04:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-09-25 00:04:35,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 9 states have return successors, (13), 10 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-25 00:04:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-09-25 00:04:35,890 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 48 [2024-09-25 00:04:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:35,891 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-09-25 00:04:35,891 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2024-09-25 00:04:35,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-09-25 00:04:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-25 00:04:35,893 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:35,893 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:35,910 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:36,097 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:36,098 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:36,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash -135028747, now seen corresponding path program 4 times [2024-09-25 00:04:36,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:36,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403787572] [2024-09-25 00:04:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:36,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:04:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-25 00:04:36,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403787572] [2024-09-25 00:04:36,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403787572] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906714967] [2024-09-25 00:04:36,653 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:04:36,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:36,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:36,658 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) [2024-09-25 00:04:36,660 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:04:36,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:04:36,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:36,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 00:04:36,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-09-25 00:04:36,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 00:04:39,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906714967] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:39,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:39,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 25 [2024-09-25 00:04:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562876860] [2024-09-25 00:04:39,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:39,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-25 00:04:39,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:39,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-25 00:04:39,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-09-25 00:04:39,045 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 10 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (24), 11 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-25 00:04:39,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:39,235 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2024-09-25 00:04:39,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 00:04:39,236 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 10 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (24), 11 states have call predecessors, (24), 10 states have call successors, (24) Word has length 62 [2024-09-25 00:04:39,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:39,238 INFO L225 Difference]: With dead ends: 61 [2024-09-25 00:04:39,238 INFO L226 Difference]: Without dead ends: 55 [2024-09-25 00:04:39,239 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=363, Invalid=759, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 00:04:39,239 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:39,240 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 116 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:39,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-25 00:04:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-09-25 00:04:39,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 6 states have call successors, (6), 5 states have call predecessors, (6), 11 states have return successors, (15), 12 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-25 00:04:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-09-25 00:04:39,249 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 62 [2024-09-25 00:04:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:39,249 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-09-25 00:04:39,250 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 10 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (24), 11 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-25 00:04:39,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-09-25 00:04:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-25 00:04:39,256 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:39,256 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:39,273 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:39,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:39,461 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:39,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:39,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1309193473, now seen corresponding path program 5 times [2024-09-25 00:04:39,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:39,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496181842] [2024-09-25 00:04:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:39,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:39,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:39,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:04:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:39,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:39,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:39,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:39,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:39,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-25 00:04:40,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:40,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496181842] [2024-09-25 00:04:40,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496181842] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:40,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21521570] [2024-09-25 00:04:40,141 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:04:40,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:40,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:40,143 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) [2024-09-25 00:04:40,145 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 00:04:40,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-25 00:04:40,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:40,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-25 00:04:40,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-09-25 00:04:40,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 00:04:43,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21521570] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:43,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:43,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 29 [2024-09-25 00:04:43,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404762162] [2024-09-25 00:04:43,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:43,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-25 00:04:43,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:43,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-25 00:04:43,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2024-09-25 00:04:43,754 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 12 states have call successors, (14), 1 states have call predecessors, (14), 13 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) [2024-09-25 00:04:43,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:43,998 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-25 00:04:43,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 00:04:43,999 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 12 states have call successors, (14), 1 states have call predecessors, (14), 13 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) Word has length 76 [2024-09-25 00:04:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:44,000 INFO L225 Difference]: With dead ends: 67 [2024-09-25 00:04:44,001 INFO L226 Difference]: Without dead ends: 61 [2024-09-25 00:04:44,001 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 150 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=507, Invalid=1053, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 00:04:44,006 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 158 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:44,006 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 143 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-25 00:04:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-09-25 00:04:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 6 states have call successors, (6), 5 states have call predecessors, (6), 13 states have return successors, (17), 14 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-25 00:04:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-09-25 00:04:44,020 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 76 [2024-09-25 00:04:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:44,024 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-09-25 00:04:44,024 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 12 states have call successors, (14), 1 states have call predecessors, (14), 13 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) [2024-09-25 00:04:44,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:44,025 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-09-25 00:04:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-25 00:04:44,026 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:44,026 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:44,046 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 00:04:44,226 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-25 00:04:44,227 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:44,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1098210039, now seen corresponding path program 6 times [2024-09-25 00:04:44,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:44,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653387600] [2024-09-25 00:04:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:44,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:44,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:44,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:04:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:44,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:44,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:44,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:44,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:44,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:44,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:44,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:45,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:45,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:45,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:45,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-25 00:04:45,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653387600] [2024-09-25 00:04:45,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653387600] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121727504] [2024-09-25 00:04:45,164 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:04:45,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:45,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:45,168 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) [2024-09-25 00:04:45,169 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 00:04:45,330 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-25 00:04:45,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:45,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-25 00:04:45,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-09-25 00:04:45,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-25 00:04:51,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121727504] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:51,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:51,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 27] total 33 [2024-09-25 00:04:51,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900606376] [2024-09-25 00:04:51,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:51,263 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-25 00:04:51,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:51,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-25 00:04:51,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2024-09-25 00:04:51,264 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 14 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) [2024-09-25 00:04:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:51,513 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-09-25 00:04:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-25 00:04:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 14 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) Word has length 90 [2024-09-25 00:04:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:51,515 INFO L225 Difference]: With dead ends: 73 [2024-09-25 00:04:51,515 INFO L226 Difference]: Without dead ends: 67 [2024-09-25 00:04:51,516 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 178 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=675, Invalid=1395, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 00:04:51,517 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 69 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:51,518 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 167 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:51,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-25 00:04:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2024-09-25 00:04:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 6 states have call successors, (6), 5 states have call predecessors, (6), 15 states have return successors, (19), 16 states have call predecessors, (19), 5 states have call successors, (19) [2024-09-25 00:04:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2024-09-25 00:04:51,534 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 90 [2024-09-25 00:04:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:51,534 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2024-09-25 00:04:51,534 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 14 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) [2024-09-25 00:04:51,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2024-09-25 00:04:51,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-25 00:04:51,536 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:51,537 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:51,553 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 00:04:51,737 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:51,738 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:51,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:51,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1131875859, now seen corresponding path program 7 times [2024-09-25 00:04:51,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:51,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397004707] [2024-09-25 00:04:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:51,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:51,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:51,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:04:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-09-25 00:04:52,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:52,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397004707] [2024-09-25 00:04:52,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397004707] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:52,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463356705] [2024-09-25 00:04:52,943 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:04:52,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:52,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:52,945 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) [2024-09-25 00:04:52,947 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 00:04:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-25 00:04:53,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-09-25 00:04:53,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:03,047 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-25 00:05:03,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463356705] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:03,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:03,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 37 [2024-09-25 00:05:03,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64289107] [2024-09-25 00:05:03,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:03,049 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-25 00:05:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:03,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-25 00:05:03,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=975, Unknown=0, NotChecked=0, Total=1332 [2024-09-25 00:05:03,050 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 16 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (42), 17 states have call predecessors, (42), 16 states have call successors, (42) [2024-09-25 00:05:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:03,322 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2024-09-25 00:05:03,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-25 00:05:03,322 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 16 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (42), 17 states have call predecessors, (42), 16 states have call successors, (42) Word has length 104 [2024-09-25 00:05:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:03,324 INFO L225 Difference]: With dead ends: 79 [2024-09-25 00:05:03,324 INFO L226 Difference]: Without dead ends: 73 [2024-09-25 00:05:03,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 206 SyntacticMatches, 13 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=867, Invalid=1785, Unknown=0, NotChecked=0, Total=2652 [2024-09-25 00:05:03,326 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 165 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:03,326 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 186 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:05:03,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-25 00:05:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-09-25 00:05:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 17 states have return successors, (21), 18 states have call predecessors, (21), 5 states have call successors, (21) [2024-09-25 00:05:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2024-09-25 00:05:03,349 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 104 [2024-09-25 00:05:03,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:03,350 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2024-09-25 00:05:03,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 16 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (42), 17 states have call predecessors, (42), 16 states have call successors, (42) [2024-09-25 00:05:03,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2024-09-25 00:05:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-25 00:05:03,352 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:03,352 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:03,371 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:03,556 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:03,557 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:03,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:03,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1771706851, now seen corresponding path program 8 times [2024-09-25 00:05:03,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:03,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580306417] [2024-09-25 00:05:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:03,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:05:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:04,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-25 00:05:05,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:05,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580306417] [2024-09-25 00:05:05,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580306417] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:05,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512617385] [2024-09-25 00:05:05,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:05:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:05,011 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) [2024-09-25 00:05:05,012 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 00:05:05,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:05:05,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:05,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-25 00:05:05,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-09-25 00:05:05,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-25 00:05:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512617385] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:20,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:20,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 35] total 41 [2024-09-25 00:05:20,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207563585] [2024-09-25 00:05:20,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:20,074 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-25 00:05:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-25 00:05:20,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=1203, Unknown=0, NotChecked=0, Total=1640 [2024-09-25 00:05:20,076 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 18 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (48), 19 states have call predecessors, (48), 18 states have call successors, (48) [2024-09-25 00:05:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:20,363 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2024-09-25 00:05:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-25 00:05:20,363 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 18 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (48), 19 states have call predecessors, (48), 18 states have call successors, (48) Word has length 118 [2024-09-25 00:05:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:20,365 INFO L225 Difference]: With dead ends: 85 [2024-09-25 00:05:20,365 INFO L226 Difference]: Without dead ends: 79 [2024-09-25 00:05:20,366 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 234 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1083, Invalid=2223, Unknown=0, NotChecked=0, Total=3306 [2024-09-25 00:05:20,367 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 106 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:20,367 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 209 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:05:20,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-25 00:05:20,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-09-25 00:05:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 6 states have call successors, (6), 5 states have call predecessors, (6), 19 states have return successors, (23), 20 states have call predecessors, (23), 5 states have call successors, (23) [2024-09-25 00:05:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2024-09-25 00:05:20,377 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 118 [2024-09-25 00:05:20,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:20,378 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2024-09-25 00:05:20,378 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 18 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (48), 19 states have call predecessors, (48), 18 states have call successors, (48) [2024-09-25 00:05:20,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2024-09-25 00:05:20,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-25 00:05:20,380 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:20,380 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:20,399 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:20,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:20,581 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:20,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash -18838233, now seen corresponding path program 9 times [2024-09-25 00:05:20,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712601658] [2024-09-25 00:05:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:20,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:20,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:05:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-09-25 00:05:22,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:22,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712601658] [2024-09-25 00:05:22,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712601658] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081941201] [2024-09-25 00:05:22,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:05:22,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:22,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:22,562 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) [2024-09-25 00:05:22,563 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 00:05:23,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-25 00:05:23,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:23,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-25 00:05:23,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-09-25 00:05:23,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-25 00:05:44,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081941201] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:44,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:44,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 39] total 45 [2024-09-25 00:05:44,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513136559] [2024-09-25 00:05:44,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:44,285 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-25 00:05:44,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:44,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-25 00:05:44,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=1455, Unknown=0, NotChecked=0, Total=1980 [2024-09-25 00:05:44,290 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 states have internal predecessors, (107), 20 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (54), 21 states have call predecessors, (54), 20 states have call successors, (54) [2024-09-25 00:05:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:44,642 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2024-09-25 00:05:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-25 00:05:44,643 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 states have internal predecessors, (107), 20 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (54), 21 states have call predecessors, (54), 20 states have call successors, (54) Word has length 132 [2024-09-25 00:05:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:44,645 INFO L225 Difference]: With dead ends: 91 [2024-09-25 00:05:44,645 INFO L226 Difference]: Without dead ends: 85 [2024-09-25 00:05:44,648 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 262 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1323, Invalid=2709, Unknown=0, NotChecked=0, Total=4032 [2024-09-25 00:05:44,649 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 177 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:44,649 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 214 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:05:44,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-25 00:05:44,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-09-25 00:05:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 6 states have call successors, (6), 5 states have call predecessors, (6), 21 states have return successors, (25), 22 states have call predecessors, (25), 5 states have call successors, (25) [2024-09-25 00:05:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2024-09-25 00:05:44,672 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 132 [2024-09-25 00:05:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:44,673 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2024-09-25 00:05:44,673 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 states have internal predecessors, (107), 20 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (54), 21 states have call predecessors, (54), 20 states have call successors, (54) [2024-09-25 00:05:44,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2024-09-25 00:05:44,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-09-25 00:05:44,676 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:44,677 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:44,699 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 00:05:44,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-25 00:05:44,881 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:44,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2018534193, now seen corresponding path program 10 times [2024-09-25 00:05:44,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:44,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327388827] [2024-09-25 00:05:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:05:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:46,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-25 00:05:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327388827] [2024-09-25 00:05:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327388827] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708154616] [2024-09-25 00:05:47,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:05:47,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:47,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:47,041 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:05:47,042 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 00:05:47,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:05:47,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:47,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-25 00:05:47,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-09-25 00:05:47,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-25 00:06:17,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708154616] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:17,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:17,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 43] total 49 [2024-09-25 00:06:17,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082435602] [2024-09-25 00:06:17,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:17,919 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-25 00:06:17,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-25 00:06:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=1731, Unknown=0, NotChecked=0, Total=2352 [2024-09-25 00:06:17,921 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 22 states have call successors, (24), 1 states have call predecessors, (24), 23 states have return successors, (60), 23 states have call predecessors, (60), 22 states have call successors, (60) [2024-09-25 00:06:18,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:18,288 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2024-09-25 00:06:18,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-25 00:06:18,288 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 22 states have call successors, (24), 1 states have call predecessors, (24), 23 states have return successors, (60), 23 states have call predecessors, (60), 22 states have call successors, (60) Word has length 146 [2024-09-25 00:06:18,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:18,290 INFO L225 Difference]: With dead ends: 97 [2024-09-25 00:06:18,290 INFO L226 Difference]: Without dead ends: 91 [2024-09-25 00:06:18,291 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 290 SyntacticMatches, 19 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1587, Invalid=3243, Unknown=0, NotChecked=0, Total=4830 [2024-09-25 00:06:18,292 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 455 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:18,292 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 238 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:06:18,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-25 00:06:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-09-25 00:06:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 6 states have call successors, (6), 5 states have call predecessors, (6), 23 states have return successors, (27), 24 states have call predecessors, (27), 5 states have call successors, (27) [2024-09-25 00:06:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-09-25 00:06:18,307 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 146 [2024-09-25 00:06:18,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:18,307 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-09-25 00:06:18,308 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 22 states have call successors, (24), 1 states have call predecessors, (24), 23 states have return successors, (60), 23 states have call predecessors, (60), 22 states have call successors, (60) [2024-09-25 00:06:18,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:18,308 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-09-25 00:06:18,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-25 00:06:18,309 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:18,309 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:06:18,328 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 00:06:18,510 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-25 00:06:18,510 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:18,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:18,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1946077243, now seen corresponding path program 11 times [2024-09-25 00:06:18,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:18,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272138291] [2024-09-25 00:06:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:18,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:18,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:18,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:06:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:19,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:19,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:19,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:19,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:19,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:21,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:21,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:21,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:21,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-25 00:06:21,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:21,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272138291] [2024-09-25 00:06:21,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272138291] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:21,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562599987] [2024-09-25 00:06:21,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:06:21,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:21,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:21,189 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:06:21,189 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 00:06:22,280 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-25 00:06:22,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:22,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-25 00:06:22,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-09-25 00:06:22,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-25 00:07:03,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562599987] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:03,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:03,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 47] total 53 [2024-09-25 00:07:03,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970644678] [2024-09-25 00:07:03,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:03,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-25 00:07:03,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:03,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-25 00:07:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2024-09-25 00:07:03,984 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 24 states have call successors, (26), 1 states have call predecessors, (26), 25 states have return successors, (66), 25 states have call predecessors, (66), 24 states have call successors, (66) [2024-09-25 00:07:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:04,315 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2024-09-25 00:07:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-25 00:07:04,316 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 24 states have call successors, (26), 1 states have call predecessors, (26), 25 states have return successors, (66), 25 states have call predecessors, (66), 24 states have call successors, (66) Word has length 160 [2024-09-25 00:07:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:04,317 INFO L225 Difference]: With dead ends: 103 [2024-09-25 00:07:04,317 INFO L226 Difference]: Without dead ends: 97 [2024-09-25 00:07:04,319 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 318 SyntacticMatches, 21 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2431 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1875, Invalid=3825, Unknown=0, NotChecked=0, Total=5700 [2024-09-25 00:07:04,320 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 123 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:04,320 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 255 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:07:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-25 00:07:04,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-09-25 00:07:04,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 25 states have return successors, (29), 26 states have call predecessors, (29), 5 states have call successors, (29) [2024-09-25 00:07:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2024-09-25 00:07:04,333 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 160 [2024-09-25 00:07:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:04,333 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2024-09-25 00:07:04,334 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 24 states have call successors, (26), 1 states have call predecessors, (26), 25 states have return successors, (66), 25 states have call predecessors, (66), 24 states have call successors, (66) [2024-09-25 00:07:04,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2024-09-25 00:07:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-25 00:07:04,336 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:04,336 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:07:04,356 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-25 00:07:04,536 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:04,537 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:04,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1693115323, now seen corresponding path program 12 times [2024-09-25 00:07:04,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:04,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706221690] [2024-09-25 00:07:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:04,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:04,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:04,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:07:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:05,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:05,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:05,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:05,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:05,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:06,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:06,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:06,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:06,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:06,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:06,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:06,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:06,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:06,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:07,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:07,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:07,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:07,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:07,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:07,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:07,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:07,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:07,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-09-25 00:07:07,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:07,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706221690] [2024-09-25 00:07:07,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706221690] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601381961] [2024-09-25 00:07:07,376 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:07:07,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:07,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:07,378 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:07:07,379 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 00:07:08,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-09-25 00:07:08,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:08,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-25 00:07:08,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-09-25 00:07:09,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-25 00:08:05,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601381961] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:05,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:05,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 51] total 57 [2024-09-25 00:08:05,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845192249] [2024-09-25 00:08:05,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:05,163 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-25 00:08:05,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-25 00:08:05,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2355, Unknown=0, NotChecked=0, Total=3192 [2024-09-25 00:08:05,166 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 57 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 26 states have call successors, (28), 1 states have call predecessors, (28), 27 states have return successors, (72), 27 states have call predecessors, (72), 26 states have call successors, (72) [2024-09-25 00:08:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:05,578 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2024-09-25 00:08:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-25 00:08:05,579 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 26 states have call successors, (28), 1 states have call predecessors, (28), 27 states have return successors, (72), 27 states have call predecessors, (72), 26 states have call successors, (72) Word has length 174 [2024-09-25 00:08:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:05,580 INFO L225 Difference]: With dead ends: 109 [2024-09-25 00:08:05,581 INFO L226 Difference]: Without dead ends: 103 [2024-09-25 00:08:05,582 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 346 SyntacticMatches, 23 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2868 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2187, Invalid=4455, Unknown=0, NotChecked=0, Total=6642 [2024-09-25 00:08:05,583 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 488 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:05,583 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 266 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:08:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-25 00:08:05,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-09-25 00:08:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 27 states have return successors, (31), 28 states have call predecessors, (31), 5 states have call successors, (31) [2024-09-25 00:08:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2024-09-25 00:08:05,593 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 174 [2024-09-25 00:08:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:05,594 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2024-09-25 00:08:05,594 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 26 states have call successors, (28), 1 states have call predecessors, (28), 27 states have return successors, (72), 27 states have call predecessors, (72), 26 states have call successors, (72) [2024-09-25 00:08:05,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2024-09-25 00:08:05,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-25 00:08:05,596 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:05,596 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:05,617 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-25 00:08:05,796 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-25 00:08:05,797 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:05,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:05,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1868775601, now seen corresponding path program 13 times [2024-09-25 00:08:05,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:05,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992722106] [2024-09-25 00:08:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:05,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:06,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:06,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:08:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:06,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:06,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:06,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-09-25 00:08:08,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992722106] [2024-09-25 00:08:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992722106] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676842524] [2024-09-25 00:08:08,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:08:08,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:08,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:08,780 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:08:08,781 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 00:08:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:10,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-25 00:08:10,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-09-25 00:08:10,922 INFO L327 TraceCheckSpWp]: Computing backward predicates...