./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de41.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/in-de41.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 71e52c2f7da6d5380080fb621ed04f7c322fd22e434b0426cf7577ab025ae680 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 19:27:00,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:27:00,593 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:27:00,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:27:00,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:27:00,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:27:00,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:27:00,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:27:00,624 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:27:00,625 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:27:00,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:27:00,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:27:00,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:27:00,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:27:00,628 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:27:00,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:27:00,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:27:00,629 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:27:00,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:27:00,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:27:00,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:27:00,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:27:00,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:27:00,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:27:00,635 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:27:00,636 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:27:00,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:27:00,636 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:27:00,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:27:00,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:27:00,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:27:00,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:27:00,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:27:00,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:27:00,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:27:00,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:27:00,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:27:00,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:27:00,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:27:00,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:27:00,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:27:00,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:27:00,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71e52c2f7da6d5380080fb621ed04f7c322fd22e434b0426cf7577ab025ae680 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:27:00,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:27:00,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:27:00,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:27:00,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:27:00,904 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:27:00,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/in-de41.c [2024-09-11 19:27:02,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:27:02,539 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:27:02,540 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/in-de41.c [2024-09-11 19:27:02,546 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/8d521d9e3/805abfb78fa34cc3b24152ec27d27698/FLAG7cd9b41bc [2024-09-11 19:27:02,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/8d521d9e3/805abfb78fa34cc3b24152ec27d27698 [2024-09-11 19:27:02,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:27:02,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:27:02,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:27:02,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:27:02,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:27:02,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f48568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02, skipping insertion in model container [2024-09-11 19:27:02,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,587 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:27:02,744 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/loops-crafted-1/in-de41.c[368,381] [2024-09-11 19:27:02,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:27:02,775 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:27:02,787 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/loops-crafted-1/in-de41.c[368,381] [2024-09-11 19:27:02,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:27:02,810 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:27:02,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02 WrapperNode [2024-09-11 19:27:02,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:27:02,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:27:02,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:27:02,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:27:02,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,842 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-09-11 19:27:02,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:27:02,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:27:02,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:27:02,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:27:02,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,864 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-11 19:27:02,865 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,867 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:27:02,874 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:27:02,874 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:27:02,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:27:02,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (1/1) ... [2024-09-11 19:27:02,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:27:02,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:02,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-11 19:27:02,909 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-11 19:27:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:27:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:27:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:27:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:27:02,996 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:27:02,998 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:27:03,100 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-11 19:27:03,100 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:27:03,130 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:27:03,131 INFO L318 CfgBuilder]: Removed 4 assume(true) statements. [2024-09-11 19:27:03,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:27:03 BoogieIcfgContainer [2024-09-11 19:27:03,132 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:27:03,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:27:03,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:27:03,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:27:03,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:27:02" (1/3) ... [2024-09-11 19:27:03,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718b1d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:27:03, skipping insertion in model container [2024-09-11 19:27:03,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:27:02" (2/3) ... [2024-09-11 19:27:03,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718b1d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:27:03, skipping insertion in model container [2024-09-11 19:27:03,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:27:03" (3/3) ... [2024-09-11 19:27:03,142 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de41.c [2024-09-11 19:27:03,157 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:27:03,158 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:27:03,201 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:27:03,208 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;@13e67c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:27:03,208 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:27:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-11 19:27:03,221 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:03,222 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:03,222 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:03,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:03,227 INFO L85 PathProgramCache]: Analyzing trace with hash 365450614, now seen corresponding path program 1 times [2024-09-11 19:27:03,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:03,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462719498] [2024-09-11 19:27:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:03,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:03,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:03,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462719498] [2024-09-11 19:27:03,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462719498] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:03,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:03,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:27:03,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521901902] [2024-09-11 19:27:03,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:03,380 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:27:03,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:27:03,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:27:03,399 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:03,418 INFO L93 Difference]: Finished difference Result 22 states and 36 transitions. [2024-09-11 19:27:03,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:27:03,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2024-09-11 19:27:03,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:03,425 INFO L225 Difference]: With dead ends: 22 [2024-09-11 19:27:03,426 INFO L226 Difference]: Without dead ends: 10 [2024-09-11 19:27:03,428 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:27:03,431 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:03,432 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-09-11 19:27:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-09-11 19:27:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2024-09-11 19:27:03,457 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 9 [2024-09-11 19:27:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:03,458 INFO L474 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-09-11 19:27:03,458 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:03,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:03,459 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2024-09-11 19:27:03,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-11 19:27:03,460 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:03,460 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:03,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:27:03,461 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:03,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:03,461 INFO L85 PathProgramCache]: Analyzing trace with hash 365331450, now seen corresponding path program 1 times [2024-09-11 19:27:03,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:03,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919220418] [2024-09-11 19:27:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:03,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:04,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:04,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919220418] [2024-09-11 19:27:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919220418] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:04,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:04,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:27:04,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816467084] [2024-09-11 19:27:04,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:04,135 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-11 19:27:04,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:04,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-11 19:27:04,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:27:04,138 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:04,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:04,215 INFO L93 Difference]: Finished difference Result 26 states and 37 transitions. [2024-09-11 19:27:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:27:04,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) Word has length 9 [2024-09-11 19:27:04,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:04,216 INFO L225 Difference]: With dead ends: 26 [2024-09-11 19:27:04,217 INFO L226 Difference]: Without dead ends: 16 [2024-09-11 19:27:04,217 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:27:04,219 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:04,220 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-11 19:27:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-11 19:27:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2024-09-11 19:27:04,229 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 9 [2024-09-11 19:27:04,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:04,230 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-09-11 19:27:04,230 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:04,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2024-09-11 19:27:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 19:27:04,232 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:04,232 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:04,232 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:27:04,233 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:04,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:04,234 INFO L85 PathProgramCache]: Analyzing trace with hash -694348189, now seen corresponding path program 1 times [2024-09-11 19:27:04,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:04,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559750902] [2024-09-11 19:27:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:04,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:04,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559750902] [2024-09-11 19:27:04,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559750902] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477999511] [2024-09-11 19:27:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:04,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:04,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:04,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:04,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 19:27:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:04,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:27:04,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:04,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:04,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477999511] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:04,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:04,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-09-11 19:27:04,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611687002] [2024-09-11 19:27:04,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:04,528 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:27:04,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:04,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:27:04,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:27:04,530 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:04,740 INFO L93 Difference]: Finished difference Result 49 states and 74 transitions. [2024-09-11 19:27:04,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:27:04,741 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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) Word has length 10 [2024-09-11 19:27:04,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:04,743 INFO L225 Difference]: With dead ends: 49 [2024-09-11 19:27:04,743 INFO L226 Difference]: Without dead ends: 43 [2024-09-11 19:27:04,744 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:27:04,746 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:04,747 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 52 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:04,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-11 19:27:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2024-09-11 19:27:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2024-09-11 19:27:04,764 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 10 [2024-09-11 19:27:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:04,765 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2024-09-11 19:27:04,765 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:04,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:04,766 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2024-09-11 19:27:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 19:27:04,767 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:04,767 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:04,783 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 19:27:04,971 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:04,972 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:04,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash 890333978, now seen corresponding path program 1 times [2024-09-11 19:27:04,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:04,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394841373] [2024-09-11 19:27:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:04,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:05,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394841373] [2024-09-11 19:27:05,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394841373] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:05,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:05,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:27:05,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731755944] [2024-09-11 19:27:05,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:05,049 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:27:05,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:27:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:27:05,051 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:05,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:05,085 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-09-11 19:27:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:27:05,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2024-09-11 19:27:05,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:05,086 INFO L225 Difference]: With dead ends: 33 [2024-09-11 19:27:05,086 INFO L226 Difference]: Without dead ends: 23 [2024-09-11 19:27:05,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:27:05,090 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:05,090 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-11 19:27:05,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-11 19:27:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2024-09-11 19:27:05,100 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 11 [2024-09-11 19:27:05,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:05,101 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-09-11 19:27:05,101 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:05,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2024-09-11 19:27:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-11 19:27:05,102 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:05,103 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:05,103 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-11 19:27:05,103 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:05,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash 490702580, now seen corresponding path program 1 times [2024-09-11 19:27:05,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:05,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209086881] [2024-09-11 19:27:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:05,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:05,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:05,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209086881] [2024-09-11 19:27:05,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209086881] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:05,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328162828] [2024-09-11 19:27:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:05,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:05,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:05,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:05,217 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 19:27:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:05,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:27:05,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:27:05,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:27:05,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328162828] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:05,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:05,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-09-11 19:27:05,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667480441] [2024-09-11 19:27:05,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:05,343 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-11 19:27:05,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-11 19:27:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:27:05,343 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:05,412 INFO L93 Difference]: Finished difference Result 56 states and 83 transitions. [2024-09-11 19:27:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:27:05,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) Word has length 12 [2024-09-11 19:27:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:05,413 INFO L225 Difference]: With dead ends: 56 [2024-09-11 19:27:05,413 INFO L226 Difference]: Without dead ends: 51 [2024-09-11 19:27:05,414 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:27:05,414 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:05,415 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 37 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-11 19:27:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2024-09-11 19:27:05,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.5) internal successors, (66), 44 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 66 transitions. [2024-09-11 19:27:05,433 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 66 transitions. Word has length 12 [2024-09-11 19:27:05,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:05,434 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 66 transitions. [2024-09-11 19:27:05,434 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:05,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 66 transitions. [2024-09-11 19:27:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-11 19:27:05,437 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:05,437 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:05,454 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-11 19:27:05,638 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:05,639 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:05,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1966423798, now seen corresponding path program 1 times [2024-09-11 19:27:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:05,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458828518] [2024-09-11 19:27:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:05,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:06,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:06,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458828518] [2024-09-11 19:27:06,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458828518] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:06,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634620780] [2024-09-11 19:27:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:06,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:06,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:06,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:06,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 19:27:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:06,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:27:06,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:06,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:06,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634620780] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:06,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:06,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2024-09-11 19:27:06,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087789343] [2024-09-11 19:27:06,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:06,604 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 19:27:06,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 19:27:06,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:27:06,605 INFO L87 Difference]: Start difference. First operand 45 states and 66 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:07,471 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2024-09-11 19:27:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:27:07,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 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) Word has length 13 [2024-09-11 19:27:07,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:07,472 INFO L225 Difference]: With dead ends: 81 [2024-09-11 19:27:07,473 INFO L226 Difference]: Without dead ends: 68 [2024-09-11 19:27:07,473 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:27:07,474 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:07,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 37 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:27:07,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-11 19:27:07,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2024-09-11 19:27:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 47 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 71 transitions. [2024-09-11 19:27:07,516 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 71 transitions. Word has length 13 [2024-09-11 19:27:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:07,516 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 71 transitions. [2024-09-11 19:27:07,516 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:07,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 71 transitions. [2024-09-11 19:27:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-11 19:27:07,517 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:07,517 INFO L216 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:07,533 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 19:27:07,718 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-11 19:27:07,719 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:07,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:07,719 INFO L85 PathProgramCache]: Analyzing trace with hash -536062406, now seen corresponding path program 2 times [2024-09-11 19:27:07,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:07,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439008074] [2024-09-11 19:27:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:07,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:07,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:07,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439008074] [2024-09-11 19:27:07,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439008074] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:07,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086732991] [2024-09-11 19:27:07,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:07,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:07,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:07,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:07,805 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 19:27:07,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:07,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:07,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:27:07,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:07,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:07,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086732991] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:07,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:07,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-09-11 19:27:07,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482696700] [2024-09-11 19:27:07,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:07,953 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-11 19:27:07,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:07,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-11 19:27:07,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:27:07,954 INFO L87 Difference]: Start difference. First operand 48 states and 71 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:08,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:08,636 INFO L93 Difference]: Finished difference Result 186 states and 310 transitions. [2024-09-11 19:27:08,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-11 19:27:08,637 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 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) Word has length 13 [2024-09-11 19:27:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:08,638 INFO L225 Difference]: With dead ends: 186 [2024-09-11 19:27:08,638 INFO L226 Difference]: Without dead ends: 172 [2024-09-11 19:27:08,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=691, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:27:08,640 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 176 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:08,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 126 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-11 19:27:08,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 83. [2024-09-11 19:27:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.475609756097561) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:08,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 121 transitions. [2024-09-11 19:27:08,696 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 121 transitions. Word has length 13 [2024-09-11 19:27:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:08,697 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 121 transitions. [2024-09-11 19:27:08,697 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:08,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 121 transitions. [2024-09-11 19:27:08,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-11 19:27:08,699 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:08,699 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:08,719 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-11 19:27:08,903 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:08,904 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:08,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2022282004, now seen corresponding path program 2 times [2024-09-11 19:27:08,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804433942] [2024-09-11 19:27:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:27:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:08,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804433942] [2024-09-11 19:27:08,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804433942] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:08,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718377026] [2024-09-11 19:27:08,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:08,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:08,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:08,978 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:08,980 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 19:27:09,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:09,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:09,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-11 19:27:09,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:27:09,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:27:09,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718377026] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:09,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:09,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-09-11 19:27:09,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763261075] [2024-09-11 19:27:09,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:09,145 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-11 19:27:09,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:09,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-11 19:27:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:27:09,146 INFO L87 Difference]: Start difference. First operand 83 states and 121 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:09,539 INFO L93 Difference]: Finished difference Result 145 states and 197 transitions. [2024-09-11 19:27:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:27:09,539 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 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) Word has length 15 [2024-09-11 19:27:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:09,541 INFO L225 Difference]: With dead ends: 145 [2024-09-11 19:27:09,541 INFO L226 Difference]: Without dead ends: 118 [2024-09-11 19:27:09,542 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:27:09,543 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 42 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:09,543 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 101 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:09,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-09-11 19:27:09,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 71. [2024-09-11 19:27:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.457142857142857) internal successors, (102), 70 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 102 transitions. [2024-09-11 19:27:09,577 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 102 transitions. Word has length 15 [2024-09-11 19:27:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:09,577 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 102 transitions. [2024-09-11 19:27:09,577 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:09,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:09,578 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2024-09-11 19:27:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-11 19:27:09,578 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:09,579 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:09,595 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 19:27:09,779 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-11 19:27:09,780 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:09,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash 597902084, now seen corresponding path program 3 times [2024-09-11 19:27:09,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:09,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515882390] [2024-09-11 19:27:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:09,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:27:09,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:09,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515882390] [2024-09-11 19:27:09,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515882390] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:09,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530971556] [2024-09-11 19:27:09,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:09,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:09,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:09,894 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:09,896 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 19:27:09,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-11 19:27:09,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:09,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-11 19:27:09,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:27:09,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:27:10,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530971556] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:10,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:10,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-09-11 19:27:10,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829624419] [2024-09-11 19:27:10,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:10,024 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:27:10,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:10,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:27:10,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:27:10,024 INFO L87 Difference]: Start difference. First operand 71 states and 102 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:10,111 INFO L93 Difference]: Finished difference Result 86 states and 119 transitions. [2024-09-11 19:27:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:27:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) Word has length 16 [2024-09-11 19:27:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:10,112 INFO L225 Difference]: With dead ends: 86 [2024-09-11 19:27:10,113 INFO L226 Difference]: Without dead ends: 82 [2024-09-11 19:27:10,113 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:27:10,113 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:10,114 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-11 19:27:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2024-09-11 19:27:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 111 transitions. [2024-09-11 19:27:10,167 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 111 transitions. Word has length 16 [2024-09-11 19:27:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:10,167 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 111 transitions. [2024-09-11 19:27:10,167 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:10,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 111 transitions. [2024-09-11 19:27:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-11 19:27:10,168 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:10,168 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:10,184 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-11 19:27:10,372 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:10,373 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:10,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1356760826, now seen corresponding path program 4 times [2024-09-11 19:27:10,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:10,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702718902] [2024-09-11 19:27:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:10,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:11,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702718902] [2024-09-11 19:27:11,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702718902] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666165022] [2024-09-11 19:27:11,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:11,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:11,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:11,337 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:11,338 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 19:27:11,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:11,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:11,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-11 19:27:11,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:11,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:12,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666165022] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:12,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:12,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 28 [2024-09-11 19:27:12,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867578931] [2024-09-11 19:27:12,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:12,119 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-11 19:27:12,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:12,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-11 19:27:12,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:27:12,120 INFO L87 Difference]: Start difference. First operand 79 states and 111 transitions. Second operand has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:12,871 INFO L93 Difference]: Finished difference Result 139 states and 191 transitions. [2024-09-11 19:27:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:27:12,872 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 28 states have internal predecessors, (45), 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) Word has length 17 [2024-09-11 19:27:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:12,873 INFO L225 Difference]: With dead ends: 139 [2024-09-11 19:27:12,873 INFO L226 Difference]: Without dead ends: 128 [2024-09-11 19:27:12,873 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:27:12,874 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:12,874 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 92 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:27:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-11 19:27:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 97. [2024-09-11 19:27:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.3541666666666667) internal successors, (130), 96 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 130 transitions. [2024-09-11 19:27:12,929 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 130 transitions. Word has length 17 [2024-09-11 19:27:12,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:12,929 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 130 transitions. [2024-09-11 19:27:12,930 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:12,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:12,930 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 130 transitions. [2024-09-11 19:27:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-11 19:27:12,931 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:12,931 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:12,945 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-11 19:27:13,131 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:13,132 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:13,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:13,132 INFO L85 PathProgramCache]: Analyzing trace with hash 93666458, now seen corresponding path program 5 times [2024-09-11 19:27:13,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:13,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918906982] [2024-09-11 19:27:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:13,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:27:13,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:13,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918906982] [2024-09-11 19:27:13,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918906982] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:13,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31804683] [2024-09-11 19:27:13,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:27:13,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:13,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:13,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:13,214 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 19:27:13,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-11 19:27:13,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:13,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:27:13,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:13,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31804683] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:13,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:13,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-09-11 19:27:13,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619221256] [2024-09-11 19:27:13,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:13,422 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-11 19:27:13,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-11 19:27:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:27:13,423 INFO L87 Difference]: Start difference. First operand 97 states and 130 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:13,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:13,777 INFO L93 Difference]: Finished difference Result 122 states and 161 transitions. [2024-09-11 19:27:13,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:27:13,777 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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) Word has length 17 [2024-09-11 19:27:13,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:13,778 INFO L225 Difference]: With dead ends: 122 [2024-09-11 19:27:13,778 INFO L226 Difference]: Without dead ends: 105 [2024-09-11 19:27:13,779 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2024-09-11 19:27:13,779 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:13,780 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 91 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-11 19:27:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2024-09-11 19:27:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 78 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 107 transitions. [2024-09-11 19:27:13,828 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 107 transitions. Word has length 17 [2024-09-11 19:27:13,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:13,828 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 107 transitions. [2024-09-11 19:27:13,828 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:13,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 107 transitions. [2024-09-11 19:27:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-11 19:27:13,829 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:13,829 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:13,847 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-11 19:27:14,030 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:14,030 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:14,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1947821750, now seen corresponding path program 6 times [2024-09-11 19:27:14,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:14,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25656097] [2024-09-11 19:27:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:14,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:27:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25656097] [2024-09-11 19:27:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25656097] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870788874] [2024-09-11 19:27:14,114 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:27:14,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:14,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:14,116 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:14,119 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 19:27:14,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-09-11 19:27:14,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:14,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:27:14,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:27:14,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:27:14,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870788874] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:14,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:14,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2024-09-11 19:27:14,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561228239] [2024-09-11 19:27:14,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:14,243 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:27:14,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:14,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:27:14,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:27:14,244 INFO L87 Difference]: Start difference. First operand 79 states and 107 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:14,433 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2024-09-11 19:27:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:27:14,434 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) Word has length 17 [2024-09-11 19:27:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:14,435 INFO L225 Difference]: With dead ends: 111 [2024-09-11 19:27:14,436 INFO L226 Difference]: Without dead ends: 98 [2024-09-11 19:27:14,436 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:27:14,437 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:14,437 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 60 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:14,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-11 19:27:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 71. [2024-09-11 19:27:14,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 70 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 96 transitions. [2024-09-11 19:27:14,484 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 96 transitions. Word has length 17 [2024-09-11 19:27:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:14,486 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 96 transitions. [2024-09-11 19:27:14,486 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:14,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 96 transitions. [2024-09-11 19:27:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-11 19:27:14,487 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:14,487 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:14,505 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:14,691 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-11 19:27:14,692 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:14,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash -888421948, now seen corresponding path program 7 times [2024-09-11 19:27:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:14,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880208297] [2024-09-11 19:27:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:14,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:14,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:14,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880208297] [2024-09-11 19:27:14,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880208297] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:14,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285779078] [2024-09-11 19:27:14,764 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:27:14,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:14,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:14,767 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:14,768 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-11 19:27:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:14,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:27:14,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:14,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:14,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285779078] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:14,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:14,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-09-11 19:27:14,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405005768] [2024-09-11 19:27:14,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:14,881 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:27:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:27:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:27:14,882 INFO L87 Difference]: Start difference. First operand 71 states and 96 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:14,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:14,967 INFO L93 Difference]: Finished difference Result 91 states and 119 transitions. [2024-09-11 19:27:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:27:14,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 18 [2024-09-11 19:27:14,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:14,968 INFO L225 Difference]: With dead ends: 91 [2024-09-11 19:27:14,969 INFO L226 Difference]: Without dead ends: 76 [2024-09-11 19:27:14,969 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 9 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:27:14,970 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:14,970 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 39 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-09-11 19:27:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-09-11 19:27:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 74 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 100 transitions. [2024-09-11 19:27:15,029 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 100 transitions. Word has length 18 [2024-09-11 19:27:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:15,029 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 100 transitions. [2024-09-11 19:27:15,029 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:15,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 100 transitions. [2024-09-11 19:27:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-11 19:27:15,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:15,030 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:15,047 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-11 19:27:15,230 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-11 19:27:15,231 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:15,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:15,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1226967340, now seen corresponding path program 2 times [2024-09-11 19:27:15,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:15,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878712137] [2024-09-11 19:27:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:15,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:15,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:15,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878712137] [2024-09-11 19:27:15,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878712137] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:15,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199607881] [2024-09-11 19:27:15,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:15,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:15,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:15,336 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:15,338 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-11 19:27:15,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:15,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:15,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-11 19:27:15,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:15,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:15,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199607881] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:15,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:15,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2024-09-11 19:27:15,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482686712] [2024-09-11 19:27:15,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:15,639 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-11 19:27:15,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:15,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-11 19:27:15,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:27:15,640 INFO L87 Difference]: Start difference. First operand 75 states and 100 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:16,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:16,108 INFO L93 Difference]: Finished difference Result 164 states and 216 transitions. [2024-09-11 19:27:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-11 19:27:16,109 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 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) Word has length 19 [2024-09-11 19:27:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:16,110 INFO L225 Difference]: With dead ends: 164 [2024-09-11 19:27:16,110 INFO L226 Difference]: Without dead ends: 146 [2024-09-11 19:27:16,110 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=1044, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:27:16,111 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:16,111 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 104 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:16,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-11 19:27:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 99. [2024-09-11 19:27:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.316326530612245) internal successors, (129), 98 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2024-09-11 19:27:16,170 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 19 [2024-09-11 19:27:16,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:16,171 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2024-09-11 19:27:16,171 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:16,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2024-09-11 19:27:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-11 19:27:16,175 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:16,176 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:16,191 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-11 19:27:16,376 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-11 19:27:16,376 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:16,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:16,377 INFO L85 PathProgramCache]: Analyzing trace with hash -980653964, now seen corresponding path program 8 times [2024-09-11 19:27:16,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:16,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139642654] [2024-09-11 19:27:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:16,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-11 19:27:16,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139642654] [2024-09-11 19:27:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139642654] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463961431] [2024-09-11 19:27:16,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:16,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:16,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:16,509 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:16,510 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-11 19:27:16,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:16,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:16,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:27:16,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-11 19:27:16,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-11 19:27:16,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463961431] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:16,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:16,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-09-11 19:27:16,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954922186] [2024-09-11 19:27:16,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:16,651 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-11 19:27:16,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:16,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-11 19:27:16,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:27:16,651 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:16,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:16,776 INFO L93 Difference]: Finished difference Result 109 states and 140 transitions. [2024-09-11 19:27:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 19:27:16,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) Word has length 20 [2024-09-11 19:27:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:16,778 INFO L225 Difference]: With dead ends: 109 [2024-09-11 19:27:16,778 INFO L226 Difference]: Without dead ends: 105 [2024-09-11 19:27:16,778 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:27:16,779 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:16,779 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 48 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:16,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-11 19:27:16,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2024-09-11 19:27:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 95 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 125 transitions. [2024-09-11 19:27:16,825 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 125 transitions. Word has length 20 [2024-09-11 19:27:16,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:16,826 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 125 transitions. [2024-09-11 19:27:16,826 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:16,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:16,826 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 125 transitions. [2024-09-11 19:27:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-11 19:27:16,827 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:16,827 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:16,840 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-11 19:27:17,027 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-11 19:27:17,028 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:17,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:17,028 INFO L85 PathProgramCache]: Analyzing trace with hash -333836406, now seen corresponding path program 9 times [2024-09-11 19:27:17,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:17,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829117225] [2024-09-11 19:27:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:17,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:17,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:17,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829117225] [2024-09-11 19:27:17,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829117225] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:17,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266152154] [2024-09-11 19:27:17,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:17,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:17,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:17,436 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:17,437 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-11 19:27:17,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:27:17,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:17,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-11 19:27:17,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:17,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:18,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266152154] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:18,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:18,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 30 [2024-09-11 19:27:18,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903265579] [2024-09-11 19:27:18,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:18,573 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-11 19:27:18,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:18,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-11 19:27:18,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2024-09-11 19:27:18,574 INFO L87 Difference]: Start difference. First operand 96 states and 125 transitions. Second operand has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:20,318 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2024-09-11 19:27:20,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-11 19:27:20,318 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 30 states have internal predecessors, (56), 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) Word has length 21 [2024-09-11 19:27:20,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:20,319 INFO L225 Difference]: With dead ends: 123 [2024-09-11 19:27:20,319 INFO L226 Difference]: Without dead ends: 103 [2024-09-11 19:27:20,321 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=435, Invalid=2321, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 19:27:20,322 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 59 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:20,322 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 75 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:27:20,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-11 19:27:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2024-09-11 19:27:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 90 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2024-09-11 19:27:20,400 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 21 [2024-09-11 19:27:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:20,400 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2024-09-11 19:27:20,400 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:20,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2024-09-11 19:27:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-11 19:27:20,402 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:20,403 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:20,419 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-11 19:27:20,603 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-11 19:27:20,604 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:20,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash 995963770, now seen corresponding path program 10 times [2024-09-11 19:27:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:20,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146539309] [2024-09-11 19:27:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-11 19:27:20,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:20,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146539309] [2024-09-11 19:27:20,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146539309] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:20,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622492148] [2024-09-11 19:27:20,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:20,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:20,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:20,707 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:20,710 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-11 19:27:20,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:20,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:20,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-11 19:27:20,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-11 19:27:20,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:27:20,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622492148] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:20,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:20,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-09-11 19:27:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817782812] [2024-09-11 19:27:20,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:20,909 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 19:27:20,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 19:27:20,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:27:20,910 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:21,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:21,239 INFO L93 Difference]: Finished difference Result 124 states and 162 transitions. [2024-09-11 19:27:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-11 19:27:21,240 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 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) Word has length 21 [2024-09-11 19:27:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:21,241 INFO L225 Difference]: With dead ends: 124 [2024-09-11 19:27:21,241 INFO L226 Difference]: Without dead ends: 93 [2024-09-11 19:27:21,241 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:27:21,241 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:21,242 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 97 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-11 19:27:21,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 76. [2024-09-11 19:27:21,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.32) internal successors, (99), 75 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:21,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 99 transitions. [2024-09-11 19:27:21,281 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 99 transitions. Word has length 21 [2024-09-11 19:27:21,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:21,281 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 99 transitions. [2024-09-11 19:27:21,281 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:21,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:21,282 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 99 transitions. [2024-09-11 19:27:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-11 19:27:21,282 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:21,282 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:21,294 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:21,483 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-11 19:27:21,483 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:21,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:21,484 INFO L85 PathProgramCache]: Analyzing trace with hash -746453126, now seen corresponding path program 3 times [2024-09-11 19:27:21,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:21,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156036891] [2024-09-11 19:27:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:21,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:21,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:21,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156036891] [2024-09-11 19:27:21,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156036891] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:21,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302912117] [2024-09-11 19:27:21,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:21,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:21,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:21,630 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:21,631 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-11 19:27:21,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:27:21,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:21,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:27:21,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:21,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:21,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302912117] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:21,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:21,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 14 [2024-09-11 19:27:21,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312416305] [2024-09-11 19:27:21,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:21,802 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:27:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:21,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:27:21,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:27:21,803 INFO L87 Difference]: Start difference. First operand 76 states and 99 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:21,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:21,963 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-09-11 19:27:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:27:21,963 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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) Word has length 21 [2024-09-11 19:27:21,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:21,964 INFO L225 Difference]: With dead ends: 107 [2024-09-11 19:27:21,964 INFO L226 Difference]: Without dead ends: 103 [2024-09-11 19:27:21,965 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:27:21,965 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:21,965 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 68 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:21,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-11 19:27:22,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 92. [2024-09-11 19:27:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.3076923076923077) internal successors, (119), 91 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:22,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2024-09-11 19:27:22,029 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 21 [2024-09-11 19:27:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:22,029 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2024-09-11 19:27:22,029 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:22,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2024-09-11 19:27:22,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-11 19:27:22,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:22,030 INFO L216 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:22,047 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-11 19:27:22,234 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-11 19:27:22,235 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:22,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:22,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1663589626, now seen corresponding path program 1 times [2024-09-11 19:27:22,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:22,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375901794] [2024-09-11 19:27:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:22,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:22,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:22,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375901794] [2024-09-11 19:27:22,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375901794] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:22,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325328277] [2024-09-11 19:27:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:22,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:22,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:22,390 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:22,391 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-11 19:27:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:22,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-11 19:27:22,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:22,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-11 19:27:22,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325328277] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:22,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:27:22,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13, 13] total 17 [2024-09-11 19:27:22,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216879857] [2024-09-11 19:27:22,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:22,517 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:27:22,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:22,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:27:22,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:27:22,518 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:22,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:22,579 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2024-09-11 19:27:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:27:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) Word has length 21 [2024-09-11 19:27:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:22,580 INFO L225 Difference]: With dead ends: 99 [2024-09-11 19:27:22,580 INFO L226 Difference]: Without dead ends: 89 [2024-09-11 19:27:22,580 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:27:22,581 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:22,581 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:22,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-11 19:27:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2024-09-11 19:27:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2839506172839505) internal successors, (104), 81 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2024-09-11 19:27:22,626 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 21 [2024-09-11 19:27:22,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:22,627 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2024-09-11 19:27:22,627 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:22,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2024-09-11 19:27:22,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:27:22,627 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:22,628 INFO L216 NwaCegarLoop]: trace histogram [6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:22,639 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:22,828 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:22,828 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:22,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1771039558, now seen corresponding path program 4 times [2024-09-11 19:27:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:22,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43130243] [2024-09-11 19:27:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:22,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-11 19:27:22,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43130243] [2024-09-11 19:27:22,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43130243] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953598975] [2024-09-11 19:27:22,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:22,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:22,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:22,975 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:22,976 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-11 19:27:23,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:23,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:23,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:27:23,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:27:23,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:27:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953598975] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:23,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:23,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 26 [2024-09-11 19:27:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141709324] [2024-09-11 19:27:23,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:23,294 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-11 19:27:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-11 19:27:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:27:23,295 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:24,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:24,368 INFO L93 Difference]: Finished difference Result 229 states and 323 transitions. [2024-09-11 19:27:24,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-11 19:27:24,369 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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) Word has length 23 [2024-09-11 19:27:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:24,370 INFO L225 Difference]: With dead ends: 229 [2024-09-11 19:27:24,370 INFO L226 Difference]: Without dead ends: 217 [2024-09-11 19:27:24,371 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=607, Invalid=2363, Unknown=0, NotChecked=0, Total=2970 [2024-09-11 19:27:24,371 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 116 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:24,371 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 199 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:27:24,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-11 19:27:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 122. [2024-09-11 19:27:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.371900826446281) internal successors, (166), 121 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 166 transitions. [2024-09-11 19:27:24,447 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 166 transitions. Word has length 23 [2024-09-11 19:27:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:24,447 INFO L474 AbstractCegarLoop]: Abstraction has 122 states and 166 transitions. [2024-09-11 19:27:24,447 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:24,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 166 transitions. [2024-09-11 19:27:24,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-11 19:27:24,448 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:24,448 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:24,462 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:24,648 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:24,649 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:24,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:24,649 INFO L85 PathProgramCache]: Analyzing trace with hash -181999421, now seen corresponding path program 11 times [2024-09-11 19:27:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515361440] [2024-09-11 19:27:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-11 19:27:24,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:24,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515361440] [2024-09-11 19:27:24,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515361440] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:24,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986984054] [2024-09-11 19:27:24,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:27:24,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:24,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:24,787 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:24,788 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-11 19:27:24,852 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:27:24,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:24,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-11 19:27:24,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-11 19:27:24,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:25,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986984054] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:25,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:25,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 24 [2024-09-11 19:27:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993728943] [2024-09-11 19:27:25,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:25,050 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:27:25,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:25,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:27:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:27:25,051 INFO L87 Difference]: Start difference. First operand 122 states and 166 transitions. Second operand has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:25,591 INFO L93 Difference]: Finished difference Result 239 states and 318 transitions. [2024-09-11 19:27:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 19:27:25,592 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 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) Word has length 24 [2024-09-11 19:27:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:25,593 INFO L225 Difference]: With dead ends: 239 [2024-09-11 19:27:25,593 INFO L226 Difference]: Without dead ends: 197 [2024-09-11 19:27:25,593 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:27:25,594 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:25,594 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 165 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-09-11 19:27:25,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 152. [2024-09-11 19:27:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.3245033112582782) internal successors, (200), 151 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 200 transitions. [2024-09-11 19:27:25,669 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 200 transitions. Word has length 24 [2024-09-11 19:27:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:25,669 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 200 transitions. [2024-09-11 19:27:25,669 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:25,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:25,670 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 200 transitions. [2024-09-11 19:27:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-11 19:27:25,670 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:25,670 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:25,683 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-11 19:27:25,872 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-11 19:27:25,872 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:25,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1683281414, now seen corresponding path program 12 times [2024-09-11 19:27:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:25,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92883671] [2024-09-11 19:27:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:25,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:26,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:26,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92883671] [2024-09-11 19:27:26,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92883671] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:26,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994943076] [2024-09-11 19:27:26,360 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:27:26,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:26,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:26,361 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:26,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-11 19:27:26,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-09-11 19:27:26,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:26,438 WARN L260 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-11 19:27:26,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:27,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:28,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994943076] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:28,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:28,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 21] total 50 [2024-09-11 19:27:28,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137798749] [2024-09-11 19:27:28,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:28,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-11 19:27:28,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:28,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-11 19:27:28,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=2064, Unknown=0, NotChecked=0, Total=2550 [2024-09-11 19:27:28,285 INFO L87 Difference]: Start difference. First operand 152 states and 200 transitions. Second operand has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:30,613 INFO L93 Difference]: Finished difference Result 242 states and 320 transitions. [2024-09-11 19:27:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-11 19:27:30,614 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 50 states have internal predecessors, (68), 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) Word has length 25 [2024-09-11 19:27:30,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:30,615 INFO L225 Difference]: With dead ends: 242 [2024-09-11 19:27:30,615 INFO L226 Difference]: Without dead ends: 216 [2024-09-11 19:27:30,616 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=973, Invalid=4139, Unknown=0, NotChecked=0, Total=5112 [2024-09-11 19:27:30,617 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 70 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:30,617 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 76 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 19:27:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-09-11 19:27:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 176. [2024-09-11 19:27:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.3942857142857144) internal successors, (244), 175 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 244 transitions. [2024-09-11 19:27:30,718 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 244 transitions. Word has length 25 [2024-09-11 19:27:30,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:30,718 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 244 transitions. [2024-09-11 19:27:30,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:30,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 244 transitions. [2024-09-11 19:27:30,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:27:30,720 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:30,720 INFO L216 NwaCegarLoop]: trace histogram [7, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:30,732 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:30,920 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-11 19:27:30,920 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:30,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1156827171, now seen corresponding path program 13 times [2024-09-11 19:27:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:30,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850874484] [2024-09-11 19:27:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-11 19:27:31,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:31,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850874484] [2024-09-11 19:27:31,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850874484] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:31,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222081389] [2024-09-11 19:27:31,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:27:31,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:31,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:31,109 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:31,111 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-11 19:27:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:31,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-11 19:27:31,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-11 19:27:31,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-11 19:27:31,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222081389] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:31,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:31,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 8] total 24 [2024-09-11 19:27:31,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545681838] [2024-09-11 19:27:31,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:31,371 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:27:31,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:27:31,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:27:31,372 INFO L87 Difference]: Start difference. First operand 176 states and 244 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:32,088 INFO L93 Difference]: Finished difference Result 338 states and 475 transitions. [2024-09-11 19:27:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 19:27:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 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) Word has length 26 [2024-09-11 19:27:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:32,090 INFO L225 Difference]: With dead ends: 338 [2024-09-11 19:27:32,090 INFO L226 Difference]: Without dead ends: 309 [2024-09-11 19:27:32,091 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=960, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:27:32,091 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 94 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:32,091 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 214 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:27:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-09-11 19:27:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 189. [2024-09-11 19:27:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.377659574468085) internal successors, (259), 188 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 259 transitions. [2024-09-11 19:27:32,191 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 259 transitions. Word has length 26 [2024-09-11 19:27:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:32,191 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 259 transitions. [2024-09-11 19:27:32,191 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:32,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 259 transitions. [2024-09-11 19:27:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:27:32,192 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:32,192 INFO L216 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:32,208 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-11 19:27:32,404 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-11 19:27:32,404 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:32,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash -569040333, now seen corresponding path program 14 times [2024-09-11 19:27:32,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:32,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168485401] [2024-09-11 19:27:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:32,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:27:32,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:32,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168485401] [2024-09-11 19:27:32,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168485401] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:32,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288842858] [2024-09-11 19:27:32,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:32,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:32,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:32,587 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:32,588 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-11 19:27:32,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:32,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:32,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-11 19:27:32,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:27:32,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:27:32,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288842858] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:32,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:32,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 23 [2024-09-11 19:27:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878752153] [2024-09-11 19:27:32,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:32,879 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:27:32,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:32,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:27:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:27:32,881 INFO L87 Difference]: Start difference. First operand 189 states and 259 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:35,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:35,063 INFO L93 Difference]: Finished difference Result 642 states and 888 transitions. [2024-09-11 19:27:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-11 19:27:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 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) Word has length 26 [2024-09-11 19:27:35,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:35,066 INFO L225 Difference]: With dead ends: 642 [2024-09-11 19:27:35,066 INFO L226 Difference]: Without dead ends: 591 [2024-09-11 19:27:35,067 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1190, Invalid=2842, Unknown=0, NotChecked=0, Total=4032 [2024-09-11 19:27:35,069 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 312 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:35,069 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 232 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:27:35,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-09-11 19:27:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 224. [2024-09-11 19:27:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.399103139013453) internal successors, (312), 223 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 312 transitions. [2024-09-11 19:27:35,216 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 312 transitions. Word has length 26 [2024-09-11 19:27:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:35,216 INFO L474 AbstractCegarLoop]: Abstraction has 224 states and 312 transitions. [2024-09-11 19:27:35,217 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:35,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 312 transitions. [2024-09-11 19:27:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-11 19:27:35,218 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:35,218 INFO L216 NwaCegarLoop]: trace histogram [8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:35,234 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-11 19:27:35,422 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-11 19:27:35,423 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:35,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:35,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1713769426, now seen corresponding path program 15 times [2024-09-11 19:27:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:35,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849231837] [2024-09-11 19:27:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:35,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-11 19:27:35,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:35,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849231837] [2024-09-11 19:27:35,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849231837] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:35,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47152320] [2024-09-11 19:27:35,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:35,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:35,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:35,575 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:35,576 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-11 19:27:35,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-11 19:27:35,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:35,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:27:35,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-11 19:27:35,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-11 19:27:35,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47152320] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:35,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:35,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 32 [2024-09-11 19:27:35,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536327784] [2024-09-11 19:27:35,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:35,973 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-11 19:27:35,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:35,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-11 19:27:35,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:27:35,975 INFO L87 Difference]: Start difference. First operand 224 states and 312 transitions. Second operand has 32 states, 32 states have (on average 1.5) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:36,990 INFO L93 Difference]: Finished difference Result 417 states and 537 transitions. [2024-09-11 19:27:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-11 19:27:36,991 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5) internal successors, (48), 32 states have internal predecessors, (48), 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) Word has length 28 [2024-09-11 19:27:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:36,993 INFO L225 Difference]: With dead ends: 417 [2024-09-11 19:27:36,993 INFO L226 Difference]: Without dead ends: 378 [2024-09-11 19:27:36,994 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=631, Invalid=2449, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 19:27:36,994 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 156 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:36,998 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 144 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:27:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-09-11 19:27:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 241. [2024-09-11 19:27:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.3416666666666666) internal successors, (322), 240 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 322 transitions. [2024-09-11 19:27:37,160 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 322 transitions. Word has length 28 [2024-09-11 19:27:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:37,160 INFO L474 AbstractCegarLoop]: Abstraction has 241 states and 322 transitions. [2024-09-11 19:27:37,160 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:37,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 322 transitions. [2024-09-11 19:27:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:27:37,161 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:37,161 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:37,176 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-11 19:27:37,362 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-11 19:27:37,362 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:37,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash -437682678, now seen corresponding path program 16 times [2024-09-11 19:27:37,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:37,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163538969] [2024-09-11 19:27:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:37,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:37,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:37,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163538969] [2024-09-11 19:27:37,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163538969] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:37,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373221064] [2024-09-11 19:27:37,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:37,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:37,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:37,968 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:37,970 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-11 19:27:38,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:38,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:38,075 WARN L260 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-11 19:27:38,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:38,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:39,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373221064] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:39,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:39,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24, 18] total 51 [2024-09-11 19:27:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621806932] [2024-09-11 19:27:39,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:39,776 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-11 19:27:39,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:39,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-11 19:27:39,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=2232, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:27:39,778 INFO L87 Difference]: Start difference. First operand 241 states and 322 transitions. Second operand has 52 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:42,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:42,861 INFO L93 Difference]: Finished difference Result 353 states and 446 transitions. [2024-09-11 19:27:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-11 19:27:42,861 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 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) Word has length 29 [2024-09-11 19:27:42,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:42,863 INFO L225 Difference]: With dead ends: 353 [2024-09-11 19:27:42,863 INFO L226 Difference]: Without dead ends: 330 [2024-09-11 19:27:42,864 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=980, Invalid=4720, Unknown=0, NotChecked=0, Total=5700 [2024-09-11 19:27:42,865 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 70 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:42,865 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 98 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 19:27:42,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-09-11 19:27:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 234. [2024-09-11 19:27:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.3476394849785407) internal successors, (314), 233 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 314 transitions. [2024-09-11 19:27:43,034 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 314 transitions. Word has length 29 [2024-09-11 19:27:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:43,034 INFO L474 AbstractCegarLoop]: Abstraction has 234 states and 314 transitions. [2024-09-11 19:27:43,034 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:43,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:43,034 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 314 transitions. [2024-09-11 19:27:43,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:27:43,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:43,035 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:43,049 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:43,236 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-11 19:27:43,236 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:43,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:43,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1122168442, now seen corresponding path program 17 times [2024-09-11 19:27:43,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:43,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244286436] [2024-09-11 19:27:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:43,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-09-11 19:27:43,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:43,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244286436] [2024-09-11 19:27:43,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244286436] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:43,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185768646] [2024-09-11 19:27:43,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:27:43,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:43,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:43,410 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:43,411 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-11 19:27:43,492 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:27:43,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:43,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 19:27:43,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-09-11 19:27:43,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:27:43,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185768646] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:43,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:43,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 29 [2024-09-11 19:27:43,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384024128] [2024-09-11 19:27:43,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:43,751 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-11 19:27:43,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:43,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-11 19:27:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:27:43,752 INFO L87 Difference]: Start difference. First operand 234 states and 314 transitions. Second operand has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:44,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:44,447 INFO L93 Difference]: Finished difference Result 335 states and 427 transitions. [2024-09-11 19:27:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-11 19:27:44,448 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 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) Word has length 29 [2024-09-11 19:27:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:44,449 INFO L225 Difference]: With dead ends: 335 [2024-09-11 19:27:44,449 INFO L226 Difference]: Without dead ends: 290 [2024-09-11 19:27:44,450 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:27:44,451 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:44,451 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 196 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:27:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-09-11 19:27:44,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 218. [2024-09-11 19:27:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.3317972350230414) internal successors, (289), 217 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 289 transitions. [2024-09-11 19:27:44,616 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 289 transitions. Word has length 29 [2024-09-11 19:27:44,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:44,616 INFO L474 AbstractCegarLoop]: Abstraction has 218 states and 289 transitions. [2024-09-11 19:27:44,617 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:44,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 289 transitions. [2024-09-11 19:27:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:27:44,617 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:44,618 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:44,629 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:44,818 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-11 19:27:44,818 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:44,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:44,818 INFO L85 PathProgramCache]: Analyzing trace with hash 503745738, now seen corresponding path program 18 times [2024-09-11 19:27:44,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:44,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880082288] [2024-09-11 19:27:44,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:44,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:27:45,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:45,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880082288] [2024-09-11 19:27:45,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880082288] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:45,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545656861] [2024-09-11 19:27:45,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:27:45,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:45,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:45,156 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:45,158 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-11 19:27:45,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-11 19:27:45,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:45,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 19:27:45,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-09-11 19:27:45,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-09-11 19:27:45,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545656861] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:45,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:45,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 24 [2024-09-11 19:27:45,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865866325] [2024-09-11 19:27:45,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:45,442 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:27:45,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:45,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:27:45,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:27:45,443 INFO L87 Difference]: Start difference. First operand 218 states and 289 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:45,810 INFO L93 Difference]: Finished difference Result 280 states and 368 transitions. [2024-09-11 19:27:45,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:27:45,810 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 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) Word has length 31 [2024-09-11 19:27:45,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:45,812 INFO L225 Difference]: With dead ends: 280 [2024-09-11 19:27:45,812 INFO L226 Difference]: Without dead ends: 276 [2024-09-11 19:27:45,812 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:27:45,812 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 42 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:45,813 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 176 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:45,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-09-11 19:27:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 266. [2024-09-11 19:27:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.2867924528301886) internal successors, (341), 265 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 341 transitions. [2024-09-11 19:27:46,007 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 341 transitions. Word has length 31 [2024-09-11 19:27:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:46,007 INFO L474 AbstractCegarLoop]: Abstraction has 266 states and 341 transitions. [2024-09-11 19:27:46,007 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:27:46,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 341 transitions. [2024-09-11 19:27:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-11 19:27:46,008 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:46,008 INFO L216 NwaCegarLoop]: trace histogram [10, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:46,020 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-11 19:27:46,209 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-11 19:27:46,209 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:46,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:46,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1416684804, now seen corresponding path program 19 times [2024-09-11 19:27:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:46,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129706226] [2024-09-11 19:27:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:46,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:27:46,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:46,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129706226] [2024-09-11 19:27:46,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129706226] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:46,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919317909] [2024-09-11 19:27:46,401 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:27:46,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:46,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:46,402 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:46,403 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-11 19:27:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:46,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-11 19:27:46,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:27:46,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:27:46,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919317909] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:46,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:46,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 37 [2024-09-11 19:27:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173795522] [2024-09-11 19:27:46,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:46,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-11 19:27:46,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-11 19:27:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:27:46,970 INFO L87 Difference]: Start difference. First operand 266 states and 341 transitions. Second operand has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:02,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:02,042 INFO L93 Difference]: Finished difference Result 855 states and 1066 transitions. [2024-09-11 19:28:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2024-09-11 19:28:02,043 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 37 states have internal predecessors, (50), 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) Word has length 32 [2024-09-11 19:28:02,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:02,045 INFO L225 Difference]: With dead ends: 855 [2024-09-11 19:28:02,045 INFO L226 Difference]: Without dead ends: 739 [2024-09-11 19:28:02,049 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18273 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=6454, Invalid=45758, Unknown=0, NotChecked=0, Total=52212 [2024-09-11 19:28:02,050 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 906 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 682 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:02,050 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 380 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [682 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-09-11 19:28:02,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2024-09-11 19:28:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 274. [2024-09-11 19:28:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.2637362637362637) internal successors, (345), 273 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 345 transitions. [2024-09-11 19:28:02,302 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 345 transitions. Word has length 32 [2024-09-11 19:28:02,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:02,303 INFO L474 AbstractCegarLoop]: Abstraction has 274 states and 345 transitions. [2024-09-11 19:28:02,303 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:02,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:02,303 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 345 transitions. [2024-09-11 19:28:02,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-11 19:28:02,304 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:02,304 INFO L216 NwaCegarLoop]: trace histogram [11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:02,317 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-11 19:28:02,504 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:02,505 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:02,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:02,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1700914947, now seen corresponding path program 20 times [2024-09-11 19:28:02,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:02,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427550916] [2024-09-11 19:28:02,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:02,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:28:02,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:02,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427550916] [2024-09-11 19:28:02,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427550916] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:02,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372847555] [2024-09-11 19:28:02,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:28:02,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:02,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:02,762 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:02,763 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-11 19:28:02,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:28:02,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:02,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-11 19:28:02,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:28:02,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:28:03,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372847555] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:03,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:03,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2024-09-11 19:28:03,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916218397] [2024-09-11 19:28:03,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:03,203 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-11 19:28:03,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:03,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-11 19:28:03,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1087, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:28:03,203 INFO L87 Difference]: Start difference. First operand 274 states and 345 transitions. Second operand has 37 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 36 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:23,797 INFO L93 Difference]: Finished difference Result 908 states and 1198 transitions. [2024-09-11 19:28:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2024-09-11 19:28:23,798 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 36 states have internal predecessors, (47), 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) Word has length 32 [2024-09-11 19:28:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:23,801 INFO L225 Difference]: With dead ends: 908 [2024-09-11 19:28:23,801 INFO L226 Difference]: Without dead ends: 847 [2024-09-11 19:28:23,804 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21720 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=11156, Invalid=42900, Unknown=0, NotChecked=0, Total=54056 [2024-09-11 19:28:23,804 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 1279 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:23,805 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 504 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-11 19:28:23,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-09-11 19:28:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 316. [2024-09-11 19:28:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.276190476190476) internal successors, (402), 315 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 402 transitions. [2024-09-11 19:28:24,133 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 402 transitions. Word has length 32 [2024-09-11 19:28:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:24,133 INFO L474 AbstractCegarLoop]: Abstraction has 316 states and 402 transitions. [2024-09-11 19:28:24,133 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 36 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:24,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 402 transitions. [2024-09-11 19:28:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-11 19:28:24,134 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:24,134 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:24,146 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-11 19:28:24,334 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:24,335 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:24,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 143682810, now seen corresponding path program 21 times [2024-09-11 19:28:24,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:24,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002946581] [2024-09-11 19:28:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:24,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:28:24,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:24,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002946581] [2024-09-11 19:28:24,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002946581] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:24,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531098328] [2024-09-11 19:28:24,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:28:24,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:24,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:24,988 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:24,988 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-11 19:28:25,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:28:25,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:25,071 WARN L260 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-11 19:28:25,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:28:26,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:28,185 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:28:28,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531098328] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:28,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:28,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28, 28] total 68 [2024-09-11 19:28:28,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611302492] [2024-09-11 19:28:28,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:28,185 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-11 19:28:28,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:28,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-11 19:28:28,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=3869, Unknown=0, NotChecked=0, Total=4692 [2024-09-11 19:28:28,187 INFO L87 Difference]: Start difference. First operand 316 states and 402 transitions. Second operand has 69 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 68 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:34,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:34,405 INFO L93 Difference]: Finished difference Result 477 states and 583 transitions. [2024-09-11 19:28:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-09-11 19:28:34,406 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 68 states have internal predecessors, (90), 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) Word has length 33 [2024-09-11 19:28:34,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:34,408 INFO L225 Difference]: With dead ends: 477 [2024-09-11 19:28:34,408 INFO L226 Difference]: Without dead ends: 443 [2024-09-11 19:28:34,408 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1660, Invalid=7460, Unknown=0, NotChecked=0, Total=9120 [2024-09-11 19:28:34,408 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 91 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:34,409 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 112 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-11 19:28:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-09-11 19:28:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 336. [2024-09-11 19:28:34,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.2955223880597015) internal successors, (434), 335 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:34,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 434 transitions. [2024-09-11 19:28:34,765 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 434 transitions. Word has length 33 [2024-09-11 19:28:34,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:34,765 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 434 transitions. [2024-09-11 19:28:34,765 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 68 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:34,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:34,766 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 434 transitions. [2024-09-11 19:28:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:28:34,766 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:34,766 INFO L216 NwaCegarLoop]: trace histogram [11, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:34,778 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-11 19:28:34,967 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:34,967 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:34,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:34,967 INFO L85 PathProgramCache]: Analyzing trace with hash 495980234, now seen corresponding path program 22 times [2024-09-11 19:28:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:34,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162563636] [2024-09-11 19:28:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:34,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 32 proven. 56 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-11 19:28:35,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162563636] [2024-09-11 19:28:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162563636] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:35,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93993361] [2024-09-11 19:28:35,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:28:35,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:35,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:35,250 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:35,251 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-11 19:28:35,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:28:35,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:35,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-11 19:28:35,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-09-11 19:28:35,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-09-11 19:28:35,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93993361] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:35,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:35,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21, 21] total 41 [2024-09-11 19:28:35,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820216518] [2024-09-11 19:28:35,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:35,933 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 19:28:35,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 19:28:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1445, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:28:35,934 INFO L87 Difference]: Start difference. First operand 336 states and 434 transitions. Second operand has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 41 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:00,559 INFO L93 Difference]: Finished difference Result 1000 states and 1247 transitions. [2024-09-11 19:29:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2024-09-11 19:29:00,559 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 41 states have internal predecessors, (54), 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) Word has length 35 [2024-09-11 19:29:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:00,562 INFO L225 Difference]: With dead ends: 1000 [2024-09-11 19:29:00,562 INFO L226 Difference]: Without dead ends: 937 [2024-09-11 19:29:00,566 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30647 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=9667, Invalid=73565, Unknown=0, NotChecked=0, Total=83232 [2024-09-11 19:29:00,567 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 1161 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:00,567 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 602 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-09-11 19:29:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2024-09-11 19:29:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 353. [2024-09-11 19:29:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.28125) internal successors, (451), 352 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 451 transitions. [2024-09-11 19:29:01,008 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 451 transitions. Word has length 35 [2024-09-11 19:29:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:01,008 INFO L474 AbstractCegarLoop]: Abstraction has 353 states and 451 transitions. [2024-09-11 19:29:01,008 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 41 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:01,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 451 transitions. [2024-09-11 19:29:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:29:01,009 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:01,009 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:01,021 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-11 19:29:01,209 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:01,210 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:01,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:01,210 INFO L85 PathProgramCache]: Analyzing trace with hash 492250170, now seen corresponding path program 23 times [2024-09-11 19:29:01,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:01,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8212476] [2024-09-11 19:29:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:01,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 36 proven. 39 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:29:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8212476] [2024-09-11 19:29:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8212476] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697245590] [2024-09-11 19:29:01,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:29:01,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:01,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:01,560 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:01,561 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-11 19:29:01,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-11 19:29:01,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:01,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 19:29:01,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 54 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-11 19:29:01,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 54 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-11 19:29:01,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697245590] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:01,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:01,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 27 [2024-09-11 19:29:01,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814518630] [2024-09-11 19:29:01,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:01,915 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-11 19:29:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:01,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-11 19:29:01,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2024-09-11 19:29:01,915 INFO L87 Difference]: Start difference. First operand 353 states and 451 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:02,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:02,697 INFO L93 Difference]: Finished difference Result 430 states and 552 transitions. [2024-09-11 19:29:02,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:29:02,697 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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) Word has length 35 [2024-09-11 19:29:02,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:02,699 INFO L225 Difference]: With dead ends: 430 [2024-09-11 19:29:02,700 INFO L226 Difference]: Without dead ends: 426 [2024-09-11 19:29:02,700 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:29:02,700 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 59 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:02,700 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 217 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:29:02,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-09-11 19:29:03,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 391. [2024-09-11 19:29:03,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.2615384615384615) internal successors, (492), 390 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 492 transitions. [2024-09-11 19:29:03,237 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 492 transitions. Word has length 35 [2024-09-11 19:29:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:03,237 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 492 transitions. [2024-09-11 19:29:03,237 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:03,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 492 transitions. [2024-09-11 19:29:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-11 19:29:03,238 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:03,238 INFO L216 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:03,253 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-11 19:29:03,438 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-11 19:29:03,439 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:03,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:03,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1282969235, now seen corresponding path program 24 times [2024-09-11 19:29:03,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:03,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835490529] [2024-09-11 19:29:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:03,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:29:03,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:03,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835490529] [2024-09-11 19:29:03,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835490529] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:03,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392379439] [2024-09-11 19:29:03,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:29:03,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:03,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:03,707 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:03,708 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-11 19:29:03,807 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-11 19:29:03,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:03,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-11 19:29:03,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:29:03,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:29:04,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392379439] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:04,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:04,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 40 [2024-09-11 19:29:04,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991417649] [2024-09-11 19:29:04,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:04,281 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-11 19:29:04,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-11 19:29:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1350, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 19:29:04,282 INFO L87 Difference]: Start difference. First operand 391 states and 492 transitions. Second operand has 41 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:40,671 INFO L93 Difference]: Finished difference Result 1171 states and 1473 transitions. [2024-09-11 19:29:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2024-09-11 19:29:40,671 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 40 states have internal predecessors, (51), 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) Word has length 36 [2024-09-11 19:29:40,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:40,674 INFO L225 Difference]: With dead ends: 1171 [2024-09-11 19:29:40,674 INFO L226 Difference]: Without dead ends: 1111 [2024-09-11 19:29:40,677 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36461 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=17010, Invalid=70310, Unknown=0, NotChecked=0, Total=87320 [2024-09-11 19:29:40,677 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 1437 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:40,678 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 660 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [973 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-09-11 19:29:40,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2024-09-11 19:29:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 407. [2024-09-11 19:29:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.251231527093596) internal successors, (508), 406 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 508 transitions. [2024-09-11 19:29:41,206 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 508 transitions. Word has length 36 [2024-09-11 19:29:41,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:41,207 INFO L474 AbstractCegarLoop]: Abstraction has 407 states and 508 transitions. [2024-09-11 19:29:41,207 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:41,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:41,207 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 508 transitions. [2024-09-11 19:29:41,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:29:41,208 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:41,208 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:41,225 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-11 19:29:41,408 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-11 19:29:41,408 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:41,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:41,409 INFO L85 PathProgramCache]: Analyzing trace with hash -587920246, now seen corresponding path program 25 times [2024-09-11 19:29:41,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:41,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5787523] [2024-09-11 19:29:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:41,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:29:42,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5787523] [2024-09-11 19:29:42,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5787523] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125731846] [2024-09-11 19:29:42,159 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:29:42,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:42,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:42,160 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:42,160 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-11 19:29:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:42,262 WARN L260 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-11 19:29:42,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:29:44,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:29:45,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125731846] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:45,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:45,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 32, 24] total 70 [2024-09-11 19:29:45,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802001585] [2024-09-11 19:29:45,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:45,604 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-11 19:29:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:45,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-11 19:29:45,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=4229, Unknown=0, NotChecked=0, Total=4970 [2024-09-11 19:29:45,605 INFO L87 Difference]: Start difference. First operand 407 states and 508 transitions. Second operand has 71 states, 71 states have (on average 1.4225352112676057) internal successors, (101), 70 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:53,811 INFO L93 Difference]: Finished difference Result 591 states and 718 transitions. [2024-09-11 19:29:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-09-11 19:29:53,812 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.4225352112676057) internal successors, (101), 70 states have internal predecessors, (101), 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) Word has length 37 [2024-09-11 19:29:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:53,814 INFO L225 Difference]: With dead ends: 591 [2024-09-11 19:29:53,814 INFO L226 Difference]: Without dead ends: 558 [2024-09-11 19:29:53,815 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3250 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=2057, Invalid=10375, Unknown=0, NotChecked=0, Total=12432 [2024-09-11 19:29:53,815 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 140 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:53,815 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 157 Invalid, 1760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-11 19:29:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-09-11 19:29:54,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 440. [2024-09-11 19:29:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.2642369020501139) internal successors, (555), 439 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 555 transitions. [2024-09-11 19:29:54,411 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 555 transitions. Word has length 37 [2024-09-11 19:29:54,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:54,411 INFO L474 AbstractCegarLoop]: Abstraction has 440 states and 555 transitions. [2024-09-11 19:29:54,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.4225352112676057) internal successors, (101), 70 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:54,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:54,412 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 555 transitions. [2024-09-11 19:29:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-11 19:29:54,412 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:54,413 INFO L216 NwaCegarLoop]: trace histogram [12, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:54,424 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-11 19:29:54,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-11 19:29:54,613 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:54,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash -376495292, now seen corresponding path program 26 times [2024-09-11 19:29:54,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:54,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806192763] [2024-09-11 19:29:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:54,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-09-11 19:29:54,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:54,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806192763] [2024-09-11 19:29:54,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806192763] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:54,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079370626] [2024-09-11 19:29:54,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:29:54,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:54,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:54,865 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:54,865 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-11 19:29:54,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:29:54,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:54,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-11 19:29:54,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 19:29:55,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 19:29:55,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079370626] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:55,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:55,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 23] total 45 [2024-09-11 19:29:55,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790980739] [2024-09-11 19:29:55,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:55,695 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-11 19:29:55,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:55,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-11 19:29:55,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1745, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:29:55,696 INFO L87 Difference]: Start difference. First operand 440 states and 555 transitions. Second operand has 46 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:30:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:30:33,559 INFO L93 Difference]: Finished difference Result 1348 states and 1680 transitions. [2024-09-11 19:30:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2024-09-11 19:30:33,560 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 45 states have internal predecessors, (58), 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) Word has length 38 [2024-09-11 19:30:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:30:33,564 INFO L225 Difference]: With dead ends: 1348 [2024-09-11 19:30:33,564 INFO L226 Difference]: Without dead ends: 1247 [2024-09-11 19:30:33,567 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45857 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=13401, Invalid=106661, Unknown=0, NotChecked=0, Total=120062 [2024-09-11 19:30:33,567 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 1618 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 1195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1195 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:30:33,568 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 680 Invalid, 3378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1195 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-09-11 19:30:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2024-09-11 19:30:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 450. [2024-09-11 19:30:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.2494432071269488) internal successors, (561), 449 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:30:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 561 transitions. [2024-09-11 19:30:34,180 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 561 transitions. Word has length 38 [2024-09-11 19:30:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:30:34,180 INFO L474 AbstractCegarLoop]: Abstraction has 450 states and 561 transitions. [2024-09-11 19:30:34,180 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:30:34,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:34,180 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 561 transitions. [2024-09-11 19:30:34,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:30:34,181 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:30:34,181 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:30:34,198 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-09-11 19:30:34,385 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-11 19:30:34,385 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:30:34,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:34,386 INFO L85 PathProgramCache]: Analyzing trace with hash 487529290, now seen corresponding path program 27 times [2024-09-11 19:30:34,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:30:34,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881831935] [2024-09-11 19:30:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:30:34,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:30:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 45 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 19:30:34,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:30:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881831935] [2024-09-11 19:30:34,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881831935] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:30:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727910478] [2024-09-11 19:30:34,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:30:34,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:34,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:30:34,774 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:30:34,774 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process