./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Primes.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Primes.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 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 16:26:18,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:26:18,754 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 16:26:18,758 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:26:18,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:26:18,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:26:18,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:26:18,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:26:18,796 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:26:18,796 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:26:18,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:26:18,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:26:18,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:26:18,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:26:18,797 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:26:18,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:26:18,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:26:18,798 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:26:18,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:26:18,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:26:18,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:26:18,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:26:18,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:26:18,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:26:18,804 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:26:18,804 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:26:18,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:26:18,806 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:26:18,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:26:18,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:26:18,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:26:18,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:26:18,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:26:18,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:26:18,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:26:18,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:26:18,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:26:18,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:26:18,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:26:18,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:26:18,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:26:18,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:26:18,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:26:19,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:26:19,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:26:19,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:26:19,083 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:26:19,084 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:26:19,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Primes.c [2024-09-12 16:26:20,338 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:26:20,485 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:26:20,485 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Primes.c [2024-09-12 16:26:20,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/88e5c7f24/bb708c3765db4a3db5f680b6682ff59b/FLAG49df98079 [2024-09-12 16:26:20,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/88e5c7f24/bb708c3765db4a3db5f680b6682ff59b [2024-09-12 16:26:20,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:26:20,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:26:20,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:26:20,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:26:20,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:26:20,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435ab181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20, skipping insertion in model container [2024-09-12 16:26:20,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,536 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:26:20,655 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2024-09-12 16:26:20,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:26:20,673 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:26:20,695 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2024-09-12 16:26:20,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:26:20,716 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:26:20,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20 WrapperNode [2024-09-12 16:26:20,717 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:26:20,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:26:20,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:26:20,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:26:20,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,728 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,733 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:26:20,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:26:20,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:26:20,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:26:20,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:26:20,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,744 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,752 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]. [2024-09-12 16:26:20,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:26:20,765 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:26:20,765 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:26:20,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:26:20,766 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (1/1) ... [2024-09-12 16:26:20,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:26:20,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:20,790 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) [2024-09-12 16:26:20,792 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 [2024-09-12 16:26:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2024-09-12 16:26:20,825 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2024-09-12 16:26:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:26:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2024-09-12 16:26:20,826 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2024-09-12 16:26:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2024-09-12 16:26:20,826 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2024-09-12 16:26:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:26:20,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:26:20,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 16:26:20,828 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime [2024-09-12 16:26:20,828 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime [2024-09-12 16:26:20,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:26:20,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:26:20,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:26:20,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:26:20,887 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:26:20,889 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:26:21,080 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-09-12 16:26:21,084 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:26:21,107 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:26:21,107 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 16:26:21,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:26:21 BoogieIcfgContainer [2024-09-12 16:26:21,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:26:21,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:26:21,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:26:21,111 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:26:21,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:26:20" (1/3) ... [2024-09-12 16:26:21,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35312c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:26:21, skipping insertion in model container [2024-09-12 16:26:21,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:20" (2/3) ... [2024-09-12 16:26:21,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35312c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:26:21, skipping insertion in model container [2024-09-12 16:26:21,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:26:21" (3/3) ... [2024-09-12 16:26:21,112 INFO L112 eAbstractionObserver]: Analyzing ICFG Primes.c [2024-09-12 16:26:21,124 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:26:21,124 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:26:21,163 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:26:21,169 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;@7dfa404d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:26:21,169 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:26:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 40 states have internal predecessors, (57), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 16:26:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 16:26:21,179 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:21,180 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:21,180 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:21,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:21,189 INFO L85 PathProgramCache]: Analyzing trace with hash 745641163, now seen corresponding path program 1 times [2024-09-12 16:26:21,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:21,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741457320] [2024-09-12 16:26:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:26:21,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:21,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741457320] [2024-09-12 16:26:21,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741457320] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:21,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:21,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 16:26:21,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997297005] [2024-09-12 16:26:21,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:21,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 16:26:21,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 16:26:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 16:26:21,414 INFO L87 Difference]: Start difference. First operand has 59 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 40 states have internal predecessors, (57), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 16:26:21,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:21,458 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2024-09-12 16:26:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 16:26:21,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-12 16:26:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:21,468 INFO L225 Difference]: With dead ends: 66 [2024-09-12 16:26:21,468 INFO L226 Difference]: Without dead ends: 55 [2024-09-12 16:26:21,470 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 16:26:21,473 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:21,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:21,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-12 16:26:21,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-09-12 16:26:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 16:26:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-09-12 16:26:21,516 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 21 [2024-09-12 16:26:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:21,519 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-09-12 16:26:21,520 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 16:26:21,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-09-12 16:26:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 16:26:21,522 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:21,522 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:21,522 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 16:26:21,523 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:21,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1491686554, now seen corresponding path program 1 times [2024-09-12 16:26:21,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:21,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700809512] [2024-09-12 16:26:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:21,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 16:26:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:26:21,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:21,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700809512] [2024-09-12 16:26:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700809512] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:21,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:21,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 16:26:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212277273] [2024-09-12 16:26:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:21,809 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 16:26:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:21,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 16:26:21,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-12 16:26:21,812 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 16:26:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:21,873 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2024-09-12 16:26:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 16:26:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-12 16:26:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:21,876 INFO L225 Difference]: With dead ends: 78 [2024-09-12 16:26:21,876 INFO L226 Difference]: Without dead ends: 57 [2024-09-12 16:26:21,876 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-12 16:26:21,882 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:21,883 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 468 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-12 16:26:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-12 16:26:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 39 states have internal predecessors, (50), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-09-12 16:26:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-09-12 16:26:21,898 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 28 [2024-09-12 16:26:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:21,899 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-09-12 16:26:21,899 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 16:26:21,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-09-12 16:26:21,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 16:26:21,901 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:21,901 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:21,901 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 16:26:21,901 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:21,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1689656639, now seen corresponding path program 1 times [2024-09-12 16:26:21,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:21,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745244491] [2024-09-12 16:26:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:21,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:21,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 16:26:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:26:22,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:22,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745244491] [2024-09-12 16:26:22,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745244491] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:22,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 16:26:22,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149375585] [2024-09-12 16:26:22,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:22,018 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 16:26:22,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:22,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 16:26:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:26:22,018 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 16:26:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:22,055 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2024-09-12 16:26:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 16:26:22,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-09-12 16:26:22,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:22,056 INFO L225 Difference]: With dead ends: 63 [2024-09-12 16:26:22,056 INFO L226 Difference]: Without dead ends: 59 [2024-09-12 16:26:22,057 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:26:22,058 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:22,058 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 265 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:22,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-12 16:26:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-09-12 16:26:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 41 states have internal predecessors, (51), 12 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-12 16:26:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2024-09-12 16:26:22,070 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 29 [2024-09-12 16:26:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:22,071 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2024-09-12 16:26:22,071 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 16:26:22,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2024-09-12 16:26:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 16:26:22,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:22,074 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:22,074 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 16:26:22,074 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:22,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:22,074 INFO L85 PathProgramCache]: Analyzing trace with hash -145981177, now seen corresponding path program 1 times [2024-09-12 16:26:22,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:22,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281626968] [2024-09-12 16:26:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:22,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 16:26:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:26:22,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281626968] [2024-09-12 16:26:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281626968] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:22,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:22,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:26:22,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662482051] [2024-09-12 16:26:22,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:22,145 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:26:22,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:22,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:26:22,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:26:22,146 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 16:26:22,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:22,218 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2024-09-12 16:26:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 16:26:22,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-12 16:26:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:22,222 INFO L225 Difference]: With dead ends: 67 [2024-09-12 16:26:22,224 INFO L226 Difference]: Without dead ends: 63 [2024-09-12 16:26:22,225 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:26:22,225 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 7 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:22,226 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 230 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:22,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-12 16:26:22,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-09-12 16:26:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 41 states have internal predecessors, (51), 12 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-12 16:26:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2024-09-12 16:26:22,239 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 30 [2024-09-12 16:26:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:22,240 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2024-09-12 16:26:22,240 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 16:26:22,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2024-09-12 16:26:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 16:26:22,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:22,241 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:22,241 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 16:26:22,241 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:22,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:22,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1109477137, now seen corresponding path program 1 times [2024-09-12 16:26:22,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:22,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431488148] [2024-09-12 16:26:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:22,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 16:26:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-12 16:26:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:22,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:22,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431488148] [2024-09-12 16:26:22,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431488148] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:22,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120009658] [2024-09-12 16:26:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:22,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:22,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:22,356 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) [2024-09-12 16:26:22,357 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 16:26:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 16:26:22,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 16:26:22,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:22,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120009658] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:22,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:22,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-09-12 16:26:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109486310] [2024-09-12 16:26:22,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:22,660 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 16:26:22,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 16:26:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-09-12 16:26:22,661 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-12 16:26:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:22,771 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-09-12 16:26:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 16:26:22,771 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 37 [2024-09-12 16:26:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:22,772 INFO L225 Difference]: With dead ends: 76 [2024-09-12 16:26:22,772 INFO L226 Difference]: Without dead ends: 57 [2024-09-12 16:26:22,773 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-09-12 16:26:22,773 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 26 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:22,773 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 458 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:26:22,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-12 16:26:22,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-12 16:26:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.263157894736842) internal successors, (48), 40 states have internal predecessors, (48), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-12 16:26:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2024-09-12 16:26:22,779 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 37 [2024-09-12 16:26:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:22,779 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2024-09-12 16:26:22,780 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-12 16:26:22,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2024-09-12 16:26:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 16:26:22,781 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:22,781 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:22,793 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:22,984 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:22,985 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:22,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:22,985 INFO L85 PathProgramCache]: Analyzing trace with hash -466412443, now seen corresponding path program 1 times [2024-09-12 16:26:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:22,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593514286] [2024-09-12 16:26:22,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:22,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 16:26:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-12 16:26:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:23,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:23,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593514286] [2024-09-12 16:26:23,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593514286] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:23,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489764409] [2024-09-12 16:26:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:23,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:23,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:23,232 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) [2024-09-12 16:26:23,233 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 16:26:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 16:26:23,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:23,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489764409] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:23,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:23,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-09-12 16:26:23,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20120043] [2024-09-12 16:26:23,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:23,722 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 16:26:23,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 16:26:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-09-12 16:26:23,722 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 24 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-12 16:26:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:23,969 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2024-09-12 16:26:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 16:26:23,970 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) Word has length 38 [2024-09-12 16:26:23,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:23,971 INFO L225 Difference]: With dead ends: 79 [2024-09-12 16:26:23,971 INFO L226 Difference]: Without dead ends: 60 [2024-09-12 16:26:23,971 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2024-09-12 16:26:23,972 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 35 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:23,972 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 738 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:26:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-12 16:26:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2024-09-12 16:26:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-12 16:26:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-09-12 16:26:23,979 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 38 [2024-09-12 16:26:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:23,980 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-09-12 16:26:23,980 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-12 16:26:23,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-09-12 16:26:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 16:26:23,981 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:23,981 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:23,995 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 16:26:24,184 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 16:26:24,185 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:24,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:24,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1285413673, now seen corresponding path program 1 times [2024-09-12 16:26:24,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:24,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607977061] [2024-09-12 16:26:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:24,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 16:26:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-12 16:26:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 16:26:24,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:24,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607977061] [2024-09-12 16:26:24,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607977061] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:24,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:24,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 16:26:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389074718] [2024-09-12 16:26:24,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:24,307 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 16:26:24,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 16:26:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-12 16:26:24,308 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 16:26:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:24,352 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2024-09-12 16:26:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 16:26:24,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-09-12 16:26:24,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:24,354 INFO L225 Difference]: With dead ends: 80 [2024-09-12 16:26:24,354 INFO L226 Difference]: Without dead ends: 59 [2024-09-12 16:26:24,355 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-12 16:26:24,355 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 14 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:24,355 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 201 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-12 16:26:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-09-12 16:26:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-12 16:26:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-09-12 16:26:24,365 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 40 [2024-09-12 16:26:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:24,366 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-09-12 16:26:24,366 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 16:26:24,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-09-12 16:26:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 16:26:24,371 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:24,371 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:24,371 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-12 16:26:24,371 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:24,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:24,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2101385548, now seen corresponding path program 1 times [2024-09-12 16:26:24,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:24,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709814992] [2024-09-12 16:26:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:24,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 16:26:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 16:26:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-12 16:26:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 16:26:24,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:24,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709814992] [2024-09-12 16:26:24,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709814992] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:24,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:24,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:26:24,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510870277] [2024-09-12 16:26:24,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:24,449 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:26:24,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:24,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:26:24,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:26:24,449 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 16:26:24,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:24,490 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions. [2024-09-12 16:26:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 16:26:24,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-09-12 16:26:24,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:24,492 INFO L225 Difference]: With dead ends: 113 [2024-09-12 16:26:24,492 INFO L226 Difference]: Without dead ends: 57 [2024-09-12 16:26:24,492 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:26:24,493 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 19 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:24,493 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 197 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:24,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-12 16:26:24,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-09-12 16:26:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.135135135135135) internal successors, (42), 39 states have internal predecessors, (42), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2024-09-12 16:26:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2024-09-12 16:26:24,498 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 58 [2024-09-12 16:26:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:24,499 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2024-09-12 16:26:24,499 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 16:26:24,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2024-09-12 16:26:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 16:26:24,499 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:24,499 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:24,500 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-12 16:26:24,500 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:24,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1599878374, now seen corresponding path program 1 times [2024-09-12 16:26:24,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:24,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861482059] [2024-09-12 16:26:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:24,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 16:26:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 16:26:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-12 16:26:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 16:26:24,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861482059] [2024-09-12 16:26:24,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861482059] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288571906] [2024-09-12 16:26:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:24,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:24,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:24,588 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) [2024-09-12 16:26:24,589 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 16:26:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 16:26:24,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 16:26:24,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 16:26:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288571906] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:24,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 16:26:24,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 16:26:24,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173509916] [2024-09-12 16:26:24,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:24,656 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:26:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:26:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 16:26:24,656 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 16:26:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:24,696 INFO L93 Difference]: Finished difference Result 105 states and 127 transitions. [2024-09-12 16:26:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 16:26:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2024-09-12 16:26:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:24,697 INFO L225 Difference]: With dead ends: 105 [2024-09-12 16:26:24,697 INFO L226 Difference]: Without dead ends: 59 [2024-09-12 16:26:24,698 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 16:26:24,699 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 13 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:24,699 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 175 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-12 16:26:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-09-12 16:26:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.131578947368421) internal successors, (43), 41 states have internal predecessors, (43), 10 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-12 16:26:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-09-12 16:26:24,711 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 59 [2024-09-12 16:26:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:24,711 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-09-12 16:26:24,711 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 16:26:24,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:24,713 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-09-12 16:26:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 16:26:24,714 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:24,714 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:24,727 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:24,914 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-12 16:26:24,915 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:24,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:24,915 INFO L85 PathProgramCache]: Analyzing trace with hash -904213436, now seen corresponding path program 1 times [2024-09-12 16:26:24,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:24,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955515594] [2024-09-12 16:26:24,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:24,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 16:26:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 16:26:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-12 16:26:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 16:26:25,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:25,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955515594] [2024-09-12 16:26:25,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955515594] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:25,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54667056] [2024-09-12 16:26:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:25,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:25,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:25,104 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) [2024-09-12 16:26:25,105 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 16:26:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:25,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 16:26:25,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 16:26:25,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 16:26:25,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54667056] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:25,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:25,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2024-09-12 16:26:25,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229987609] [2024-09-12 16:26:25,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:25,627 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 16:26:25,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:25,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 16:26:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-12 16:26:25,628 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-12 16:26:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:25,862 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2024-09-12 16:26:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 16:26:25,863 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 10 states have call successors, (16) Word has length 68 [2024-09-12 16:26:25,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:25,864 INFO L225 Difference]: With dead ends: 99 [2024-09-12 16:26:25,864 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 16:26:25,864 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-09-12 16:26:25,865 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 34 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:25,865 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 498 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:26:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 16:26:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2024-09-12 16:26:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.125) internal successors, (45), 43 states have internal predecessors, (45), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-12 16:26:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-09-12 16:26:25,875 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 68 [2024-09-12 16:26:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:25,876 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-09-12 16:26:25,876 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-12 16:26:25,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-09-12 16:26:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 16:26:25,877 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:25,877 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:25,890 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 16:26:26,077 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:26,078 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:26,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:26,078 INFO L85 PathProgramCache]: Analyzing trace with hash -640732844, now seen corresponding path program 2 times [2024-09-12 16:26:26,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:26,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080210987] [2024-09-12 16:26:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:26,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 16:26:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 16:26:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-12 16:26:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 16:26:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080210987] [2024-09-12 16:26:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080210987] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029059064] [2024-09-12 16:26:26,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:26:26,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:26,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:26,356 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) [2024-09-12 16:26:26,357 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 16:26:26,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:26:26,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:26,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 16:26:26,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 16:26:26,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 16:26:27,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029059064] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:27,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:27,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 22 [2024-09-12 16:26:27,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201556250] [2024-09-12 16:26:27,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:27,212 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 16:26:27,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:27,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 16:26:27,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-09-12 16:26:27,214 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 22 states, 19 states have (on average 5.0) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (18), 2 states have call predecessors, (18), 7 states have return successors, (20), 7 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 16:26:27,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:27,577 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2024-09-12 16:26:27,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 16:26:27,577 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.0) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (18), 2 states have call predecessors, (18), 7 states have return successors, (20), 7 states have call predecessors, (20), 12 states have call successors, (20) Word has length 77 [2024-09-12 16:26:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:27,578 INFO L225 Difference]: With dead ends: 157 [2024-09-12 16:26:27,578 INFO L226 Difference]: Without dead ends: 101 [2024-09-12 16:26:27,579 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 159 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2024-09-12 16:26:27,579 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 78 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:27,579 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 508 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:26:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-12 16:26:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-09-12 16:26:27,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 72 states have internal predecessors, (75), 14 states have call successors, (14), 10 states have call predecessors, (14), 14 states have return successors, (34), 14 states have call predecessors, (34), 13 states have call successors, (34) [2024-09-12 16:26:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 123 transitions. [2024-09-12 16:26:27,589 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 123 transitions. Word has length 77 [2024-09-12 16:26:27,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:27,590 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 123 transitions. [2024-09-12 16:26:27,590 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.0) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (18), 2 states have call predecessors, (18), 7 states have return successors, (20), 7 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 16:26:27,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:27,590 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 123 transitions. [2024-09-12 16:26:27,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-12 16:26:27,591 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:27,591 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:27,602 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 16:26:27,794 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 16:26:27,794 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:27,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1768804806, now seen corresponding path program 1 times [2024-09-12 16:26:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:27,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320130183] [2024-09-12 16:26:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:27,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 16:26:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 16:26:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-12 16:26:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:27,911 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-12 16:26:27,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:27,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320130183] [2024-09-12 16:26:27,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320130183] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:27,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:27,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:26:27,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010064030] [2024-09-12 16:26:27,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:27,912 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:26:27,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:27,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:26:27,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:26:27,913 INFO L87 Difference]: Start difference. First operand 97 states and 123 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 16:26:27,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:27,952 INFO L93 Difference]: Finished difference Result 185 states and 257 transitions. [2024-09-12 16:26:27,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:26:27,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 84 [2024-09-12 16:26:27,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:27,953 INFO L225 Difference]: With dead ends: 185 [2024-09-12 16:26:27,953 INFO L226 Difference]: Without dead ends: 97 [2024-09-12 16:26:27,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:26:27,954 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:27,954 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 186 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:26:27,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-12 16:26:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-09-12 16:26:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 72 states have internal predecessors, (75), 14 states have call successors, (14), 10 states have call predecessors, (14), 14 states have return successors, (32), 14 states have call predecessors, (32), 13 states have call successors, (32) [2024-09-12 16:26:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2024-09-12 16:26:27,969 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 84 [2024-09-12 16:26:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:27,969 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2024-09-12 16:26:27,969 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 16:26:27,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2024-09-12 16:26:27,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-12 16:26:27,970 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:27,970 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:27,970 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-12 16:26:27,970 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:27,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash -802082800, now seen corresponding path program 2 times [2024-09-12 16:26:27,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:27,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589823416] [2024-09-12 16:26:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 16:26:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-12 16:26:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 16:26:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 16:26:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-12 16:26:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-12 16:26:28,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:28,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589823416] [2024-09-12 16:26:28,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589823416] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:28,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395450448] [2024-09-12 16:26:28,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:26:28,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:28,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:28,250 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) [2024-09-12 16:26:28,251 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 16:26:28,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:26:28,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:28,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-12 16:26:28,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 16:26:28,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 16:26:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395450448] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:30,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:30,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 25 [2024-09-12 16:26:30,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899917035] [2024-09-12 16:26:30,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:30,089 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 16:26:30,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:30,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 16:26:30,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2024-09-12 16:26:30,090 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 25 states, 24 states have (on average 5.208333333333333) internal successors, (125), 25 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (25), 7 states have call predecessors, (25), 15 states have call successors, (25) [2024-09-12 16:26:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:30,254 INFO L93 Difference]: Finished difference Result 158 states and 212 transitions. [2024-09-12 16:26:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 16:26:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.208333333333333) internal successors, (125), 25 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (25), 7 states have call predecessors, (25), 15 states have call successors, (25) Word has length 93 [2024-09-12 16:26:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:30,256 INFO L225 Difference]: With dead ends: 158 [2024-09-12 16:26:30,256 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 16:26:30,257 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 16:26:30,257 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:30,257 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 243 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:26:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 16:26:30,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 16:26:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-12 16:26:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 16:26:30,258 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2024-09-12 16:26:30,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:30,260 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 16:26:30,260 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.208333333333333) internal successors, (125), 25 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (25), 7 states have call predecessors, (25), 15 states have call successors, (25) [2024-09-12 16:26:30,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 16:26:30,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 16:26:30,263 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-12 16:26:30,275 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:30,463 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 16:26:30,466 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:30,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 16:26:31,661 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 16:26:31,677 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-12 16:26:31,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 04:26:31 BoogieIcfgContainer [2024-09-12 16:26:31,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 16:26:31,678 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 16:26:31,678 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 16:26:31,678 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 16:26:31,679 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:26:21" (3/4) ... [2024-09-12 16:26:31,680 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 16:26:31,683 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure multiple_of [2024-09-12 16:26:31,683 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 16:26:31,683 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure mult [2024-09-12 16:26:31,683 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_prime_ [2024-09-12 16:26:31,683 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 16:26:31,683 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_prime [2024-09-12 16:26:31,686 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-09-12 16:26:31,686 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-09-12 16:26:31,686 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-12 16:26:31,687 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 16:26:31,752 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 16:26:31,752 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 16:26:31,752 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 16:26:31,752 INFO L158 Benchmark]: Toolchain (without parser) took 11240.43ms. Allocated memory was 73.4MB in the beginning and 243.3MB in the end (delta: 169.9MB). Free memory was 53.7MB in the beginning and 166.0MB in the end (delta: -112.2MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2024-09-12 16:26:31,753 INFO L158 Benchmark]: CDTParser took 1.02ms. Allocated memory is still 44.0MB. Free memory was 25.2MB in the beginning and 25.1MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:26:31,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.84ms. Allocated memory is still 73.4MB. Free memory was 53.5MB in the beginning and 41.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-12 16:26:31,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.34ms. Allocated memory is still 73.4MB. Free memory was 41.4MB in the beginning and 40.4MB in the end (delta: 987.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:26:31,753 INFO L158 Benchmark]: Boogie Preprocessor took 30.23ms. Allocated memory is still 73.4MB. Free memory was 40.4MB in the beginning and 38.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 16:26:31,753 INFO L158 Benchmark]: RCFGBuilder took 342.38ms. Allocated memory is still 73.4MB. Free memory was 38.6MB in the beginning and 44.3MB in the end (delta: -5.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-12 16:26:31,753 INFO L158 Benchmark]: TraceAbstraction took 10569.60ms. Allocated memory was 73.4MB in the beginning and 243.3MB in the end (delta: 169.9MB). Free memory was 43.7MB in the beginning and 171.2MB in the end (delta: -127.5MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. [2024-09-12 16:26:31,754 INFO L158 Benchmark]: Witness Printer took 73.68ms. Allocated memory is still 243.3MB. Free memory was 171.2MB in the beginning and 166.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-12 16:26:31,755 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02ms. Allocated memory is still 44.0MB. Free memory was 25.2MB in the beginning and 25.1MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.84ms. Allocated memory is still 73.4MB. Free memory was 53.5MB in the beginning and 41.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.34ms. Allocated memory is still 73.4MB. Free memory was 41.4MB in the beginning and 40.4MB in the end (delta: 987.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.23ms. Allocated memory is still 73.4MB. Free memory was 40.4MB in the beginning and 38.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 342.38ms. Allocated memory is still 73.4MB. Free memory was 38.6MB in the beginning and 44.3MB in the end (delta: -5.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10569.60ms. Allocated memory was 73.4MB in the beginning and 243.3MB in the end (delta: 169.9MB). Free memory was 43.7MB in the beginning and 171.2MB in the end (delta: -127.5MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. * Witness Printer took 73.68ms. Allocated memory is still 243.3MB. Free memory was 171.2MB in the beginning and 166.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 328 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 4316 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3584 mSDsCounter, 161 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1777 IncrementalHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 161 mSolverCounterUnsat, 732 mSDtfsCounter, 1777 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 982 GetRequests, 805 SyntacticMatches, 19 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=11, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 24 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1034 NumberOfCodeBlocks, 1034 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1323 ConstructedInterpolants, 0 QuantifiedInterpolants, 3220 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 287/540 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 31]: Procedure Contract for multiple_of Derived contract for procedure multiple_of. Ensures: (((((((long long) \old(m) * 2) < ((long long) \old(n) + 1)) || (\old(n) == \old(m))) || (\old(n) == 0)) || ((\old(n) + \old(m)) < 1)) || (\old(m) < 1)) - ProcedureContractResult [Line: 17]: Procedure Contract for mult Derived contract for procedure mult. Ensures: ((((2 < \result) || (\result == 0)) || (\old(m) < 2)) || (\old(n) < 2)) - ProcedureContractResult [Line: 52]: Procedure Contract for is_prime Derived contract for procedure is_prime. Ensures: ((\old(n) < 3) || (\result == 0)) RESULT: Ultimate proved your program to be correct! [2024-09-12 16:26:31,777 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE