./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.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 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 00:22:52,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 00:22:52,494 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 00:22:52,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 00:22:52,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 00:22:52,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 00:22:52,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 00:22:52,528 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 00:22:52,528 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 00:22:52,529 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 00:22:52,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 00:22:52,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 00:22:52,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 00:22:52,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 00:22:52,531 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 00:22:52,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 00:22:52,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 00:22:52,532 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 00:22:52,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 00:22:52,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 00:22:52,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 00:22:52,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 00:22:52,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 00:22:52,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 00:22:52,538 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 00:22:52,538 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 00:22:52,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 00:22:52,539 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 00:22:52,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 00:22:52,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 00:22:52,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 00:22:52,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 00:22:52,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 00:22:52,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 00:22:52,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 00:22:52,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 00:22:52,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 00:22:52,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 00:22:52,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 00:22:52,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 00:22:52,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 00:22:52,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 00:22:52,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 00:22:52,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 00:22:52,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 00:22:52,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 00:22:52,831 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 00:22:52,832 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 00:22:52,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-09-13 00:22:54,260 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 00:22:54,427 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 00:22:54,428 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-09-13 00:22:54,435 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b78e9e919/b5c7a5c809aa48a1b8c9807a6c7c8621/FLAG55f8c2673 [2024-09-13 00:22:54,448 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b78e9e919/b5c7a5c809aa48a1b8c9807a6c7c8621 [2024-09-13 00:22:54,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 00:22:54,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 00:22:54,455 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 00:22:54,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 00:22:54,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 00:22:54,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2284d9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54, skipping insertion in model container [2024-09-13 00:22:54,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,484 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 00:22:54,633 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2024-09-13 00:22:54,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 00:22:54,665 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 00:22:54,675 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2024-09-13 00:22:54,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 00:22:54,700 INFO L204 MainTranslator]: Completed translation [2024-09-13 00:22:54,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54 WrapperNode [2024-09-13 00:22:54,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 00:22:54,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 00:22:54,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 00:22:54,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 00:22:54,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,721 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 00:22:54,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 00:22:54,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 00:22:54,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 00:22:54,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 00:22:54,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,732 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,749 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]. [2024-09-13 00:22:54,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 00:22:54,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 00:22:54,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 00:22:54,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 00:22:54,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (1/1) ... [2024-09-13 00:22:54,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 00:22:54,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:54,797 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) [2024-09-13 00:22:54,800 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 [2024-09-13 00:22:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 00:22:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 00:22:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 00:22:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 00:22:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 00:22:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 00:22:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 00:22:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 00:22:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 00:22:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 00:22:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 00:22:54,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 00:22:54,899 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 00:22:54,901 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 00:22:55,063 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-13 00:22:55,064 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 00:22:55,083 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 00:22:55,084 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 00:22:55,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 12:22:55 BoogieIcfgContainer [2024-09-13 00:22:55,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 00:22:55,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 00:22:55,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 00:22:55,090 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 00:22:55,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 12:22:54" (1/3) ... [2024-09-13 00:22:55,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd54340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 12:22:55, skipping insertion in model container [2024-09-13 00:22:55,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:54" (2/3) ... [2024-09-13 00:22:55,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd54340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 12:22:55, skipping insertion in model container [2024-09-13 00:22:55,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 12:22:55" (3/3) ... [2024-09-13 00:22:55,092 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2024-09-13 00:22:55,109 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 00:22:55,110 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 00:22:55,190 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 00:22:55,201 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;@26ee0574, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 00:22:55,202 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 00:22:55,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-13 00:22:55,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-13 00:22:55,216 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:55,217 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:55,217 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:55,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:55,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2011850563, now seen corresponding path program 1 times [2024-09-13 00:22:55,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:55,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098103959] [2024-09-13 00:22:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:55,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:22:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:22:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:22:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:22:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:22:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-13 00:22:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-13 00:22:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 00:22:55,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:55,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098103959] [2024-09-13 00:22:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098103959] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:22:55,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:22:55,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 00:22:55,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051230656] [2024-09-13 00:22:55,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:55,514 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 00:22:55,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 00:22:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 00:22:55,536 INFO L87 Difference]: Start difference. First operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 00:22:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:55,565 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2024-09-13 00:22:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 00:22:55,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-13 00:22:55,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:55,575 INFO L225 Difference]: With dead ends: 70 [2024-09-13 00:22:55,576 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 00:22:55,580 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 00:22:55,585 INFO L434 NwaCegarLoop]: 47 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, 47 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 [2024-09-13 00:22:55,587 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 00:22:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 00:22:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-13 00:22:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-13 00:22:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-09-13 00:22:55,630 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 42 [2024-09-13 00:22:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:55,631 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-09-13 00:22:55,632 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 00:22:55,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-09-13 00:22:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-13 00:22:55,635 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:55,635 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:55,635 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 00:22:55,635 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:55,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:55,636 INFO L85 PathProgramCache]: Analyzing trace with hash -213832741, now seen corresponding path program 1 times [2024-09-13 00:22:55,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:55,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113257989] [2024-09-13 00:22:55,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:55,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:22:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:22:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:22:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:22:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:22:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-13 00:22:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:55,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-13 00:22:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-13 00:22:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113257989] [2024-09-13 00:22:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113257989] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:22:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793416235] [2024-09-13 00:22:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:56,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:56,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:56,023 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) [2024-09-13 00:22:56,025 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 00:22:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:56,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 00:22:56,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-13 00:22:56,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:22:56,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793416235] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:22:56,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 00:22:56,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-09-13 00:22:56,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30203476] [2024-09-13 00:22:56,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 00:22:56,546 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 00:22:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:56,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 00:22:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-09-13 00:22:56,548 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-13 00:22:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:56,838 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2024-09-13 00:22:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 00:22:56,839 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 43 [2024-09-13 00:22:56,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:56,841 INFO L225 Difference]: With dead ends: 55 [2024-09-13 00:22:56,841 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 00:22:56,842 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-13 00:22:56,843 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 00:22:56,845 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 233 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 00:22:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 00:22:56,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-09-13 00:22:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-13 00:22:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2024-09-13 00:22:56,870 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 43 [2024-09-13 00:22:56,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:56,871 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2024-09-13 00:22:56,871 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-13 00:22:56,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2024-09-13 00:22:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-13 00:22:56,873 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:56,873 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:56,890 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 00:22:57,073 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:57,074 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:57,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:57,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1967462229, now seen corresponding path program 1 times [2024-09-13 00:22:57,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:57,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142291594] [2024-09-13 00:22:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:57,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:57,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739186847] [2024-09-13 00:22:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:57,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:57,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:57,113 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) [2024-09-13 00:22:57,116 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 00:22:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:57,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 00:22:57,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 00:22:57,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 00:22:57,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:57,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142291594] [2024-09-13 00:22:57,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:57,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739186847] [2024-09-13 00:22:57,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739186847] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:22:57,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:22:57,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 00:22:57,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131526007] [2024-09-13 00:22:57,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:57,216 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 00:22:57,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:57,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 00:22:57,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 00:22:57,218 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-13 00:22:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:57,285 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2024-09-13 00:22:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 00:22:57,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2024-09-13 00:22:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:57,287 INFO L225 Difference]: With dead ends: 65 [2024-09-13 00:22:57,289 INFO L226 Difference]: Without dead ends: 63 [2024-09-13 00:22:57,289 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 00:22:57,290 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 00:22:57,291 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 00:22:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-13 00:22:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-09-13 00:22:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 00:22:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-09-13 00:22:57,321 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 44 [2024-09-13 00:22:57,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:57,321 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-09-13 00:22:57,321 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-13 00:22:57,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2024-09-13 00:22:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-13 00:22:57,323 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:57,323 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:57,342 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 00:22:57,528 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:57,529 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:57,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash -189867411, now seen corresponding path program 1 times [2024-09-13 00:22:57,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:57,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227876019] [2024-09-13 00:22:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:57,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:57,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354848086] [2024-09-13 00:22:57,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:57,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:57,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:57,552 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) [2024-09-13 00:22:57,554 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 00:22:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:57,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 00:22:57,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 00:22:57,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 00:22:57,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227876019] [2024-09-13 00:22:57,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354848086] [2024-09-13 00:22:57,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354848086] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:22:57,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:22:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 00:22:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697140754] [2024-09-13 00:22:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:57,696 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 00:22:57,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:57,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 00:22:57,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 00:22:57,700 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 00:22:57,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:57,764 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-09-13 00:22:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 00:22:57,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-13 00:22:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:57,767 INFO L225 Difference]: With dead ends: 61 [2024-09-13 00:22:57,767 INFO L226 Difference]: Without dead ends: 59 [2024-09-13 00:22:57,768 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 00:22:57,769 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 00:22:57,770 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 154 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 00:22:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-13 00:22:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-09-13 00:22:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 00:22:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-09-13 00:22:57,784 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 49 [2024-09-13 00:22:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:57,785 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-09-13 00:22:57,785 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 00:22:57,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-09-13 00:22:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-13 00:22:57,787 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:57,788 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:57,803 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 00:22:57,991 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:57,992 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:57,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash -470549715, now seen corresponding path program 1 times [2024-09-13 00:22:57,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:57,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984404150] [2024-09-13 00:22:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:57,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:58,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241180521] [2024-09-13 00:22:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:58,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:58,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:58,016 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) [2024-09-13 00:22:58,018 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 00:22:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:58,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 00:22:58,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-13 00:22:58,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:22:58,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:58,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984404150] [2024-09-13 00:22:58,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:58,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241180521] [2024-09-13 00:22:58,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241180521] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:22:58,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 00:22:58,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-13 00:22:58,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414819570] [2024-09-13 00:22:58,397 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 00:22:58,398 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 00:22:58,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:58,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 00:22:58,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-13 00:22:58,399 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-13 00:22:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:58,553 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2024-09-13 00:22:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 00:22:58,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 59 [2024-09-13 00:22:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:58,554 INFO L225 Difference]: With dead ends: 67 [2024-09-13 00:22:58,554 INFO L226 Difference]: Without dead ends: 65 [2024-09-13 00:22:58,555 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-09-13 00:22:58,555 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 00:22:58,556 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 201 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 00:22:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-13 00:22:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2024-09-13 00:22:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 00:22:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-09-13 00:22:58,575 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 59 [2024-09-13 00:22:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:58,577 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-09-13 00:22:58,577 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-13 00:22:58,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-09-13 00:22:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-13 00:22:58,579 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:58,579 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:58,601 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 00:22:58,780 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:58,780 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:58,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash 487403380, now seen corresponding path program 1 times [2024-09-13 00:22:58,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:58,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552404133] [2024-09-13 00:22:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:58,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:58,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704423340] [2024-09-13 00:22:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:58,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:58,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:58,804 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) [2024-09-13 00:22:58,805 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 00:22:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:58,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-13 00:22:58,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 00:22:59,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:22:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-09-13 00:22:59,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552404133] [2024-09-13 00:22:59,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704423340] [2024-09-13 00:22:59,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704423340] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 00:22:59,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 00:22:59,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2024-09-13 00:22:59,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744342965] [2024-09-13 00:22:59,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:59,125 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 00:22:59,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 00:22:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-13 00:22:59,126 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-13 00:22:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:59,175 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2024-09-13 00:22:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 00:22:59,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2024-09-13 00:22:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:59,181 INFO L225 Difference]: With dead ends: 68 [2024-09-13 00:22:59,181 INFO L226 Difference]: Without dead ends: 66 [2024-09-13 00:22:59,181 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-13 00:22:59,182 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 00:22:59,182 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 138 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 00:22:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-13 00:22:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2024-09-13 00:22:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-13 00:22:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-09-13 00:22:59,203 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 66 [2024-09-13 00:22:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:59,203 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-09-13 00:22:59,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-13 00:22:59,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-09-13 00:22:59,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-13 00:22:59,207 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:59,207 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:59,225 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 00:22:59,408 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 00:22:59,408 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:59,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:59,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2098403842, now seen corresponding path program 1 times [2024-09-13 00:22:59,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:59,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117566014] [2024-09-13 00:22:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:59,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:22:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:22:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:22:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:22:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:22:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-13 00:22:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-13 00:22:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 00:22:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 00:22:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 00:22:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 00:22:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-13 00:22:59,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:59,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117566014] [2024-09-13 00:22:59,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117566014] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:22:59,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822623865] [2024-09-13 00:22:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:59,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:59,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:59,638 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) [2024-09-13 00:22:59,639 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 00:22:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:59,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-13 00:22:59,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:23:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 00:23:00,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:23:00,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822623865] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:23:00,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 00:23:00,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 17 [2024-09-13 00:23:00,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425202245] [2024-09-13 00:23:00,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 00:23:00,360 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 00:23:00,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:23:00,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 00:23:00,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-09-13 00:23:00,362 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-13 00:23:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:23:00,691 INFO L93 Difference]: Finished difference Result 90 states and 111 transitions. [2024-09-13 00:23:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 00:23:00,692 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 68 [2024-09-13 00:23:00,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:23:00,693 INFO L225 Difference]: With dead ends: 90 [2024-09-13 00:23:00,693 INFO L226 Difference]: Without dead ends: 69 [2024-09-13 00:23:00,694 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2024-09-13 00:23:00,694 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 00:23:00,697 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 339 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 00:23:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-13 00:23:00,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-09-13 00:23:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-13 00:23:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2024-09-13 00:23:00,718 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 68 [2024-09-13 00:23:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:23:00,718 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2024-09-13 00:23:00,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-13 00:23:00,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:23:00,719 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2024-09-13 00:23:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-13 00:23:00,721 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:23:00,722 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:23:00,738 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 00:23:00,922 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:23:00,923 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:23:00,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:23:00,923 INFO L85 PathProgramCache]: Analyzing trace with hash -607760099, now seen corresponding path program 1 times [2024-09-13 00:23:00,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:23:00,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859343619] [2024-09-13 00:23:00,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:23:00,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:23:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:23:00,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905721709] [2024-09-13 00:23:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:23:00,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:23:00,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:23:00,953 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) [2024-09-13 00:23:00,955 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 00:23:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:01,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-13 00:23:01,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:23:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-09-13 00:23:01,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:23:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-13 00:23:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:23:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859343619] [2024-09-13 00:23:02,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:23:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905721709] [2024-09-13 00:23:02,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905721709] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 00:23:02,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 00:23:02,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2024-09-13 00:23:02,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705356217] [2024-09-13 00:23:02,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 00:23:02,835 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 00:23:02,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:23:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 00:23:02,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2024-09-13 00:23:02,837 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-13 00:23:08,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 00:23:08,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:23:08,970 INFO L93 Difference]: Finished difference Result 159 states and 233 transitions. [2024-09-13 00:23:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-13 00:23:08,971 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) Word has length 90 [2024-09-13 00:23:08,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:23:08,974 INFO L225 Difference]: With dead ends: 159 [2024-09-13 00:23:08,974 INFO L226 Difference]: Without dead ends: 157 [2024-09-13 00:23:08,975 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=446, Invalid=1716, Unknown=0, NotChecked=0, Total=2162 [2024-09-13 00:23:08,976 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 150 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-09-13 00:23:08,976 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 632 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 512 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2024-09-13 00:23:08,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-09-13 00:23:09,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 121. [2024-09-13 00:23:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 62 states have internal predecessors, (73), 51 states have call successors, (51), 10 states have call predecessors, (51), 9 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-13 00:23:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 173 transitions. [2024-09-13 00:23:09,027 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 173 transitions. Word has length 90 [2024-09-13 00:23:09,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:23:09,028 INFO L474 AbstractCegarLoop]: Abstraction has 121 states and 173 transitions. [2024-09-13 00:23:09,028 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-13 00:23:09,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:23:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 173 transitions. [2024-09-13 00:23:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-13 00:23:09,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:23:09,030 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:23:09,047 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 00:23:09,234 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:23:09,235 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:23:09,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:23:09,235 INFO L85 PathProgramCache]: Analyzing trace with hash 281468069, now seen corresponding path program 1 times [2024-09-13 00:23:09,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:23:09,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842411255] [2024-09-13 00:23:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:23:09,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:23:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:23:09,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868712744] [2024-09-13 00:23:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:23:09,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:23:09,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:23:09,268 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) [2024-09-13 00:23:09,269 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 00:23:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:09,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-13 00:23:09,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:23:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-13 00:23:09,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:23:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-09-13 00:23:10,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:23:10,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842411255] [2024-09-13 00:23:10,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:23:10,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868712744] [2024-09-13 00:23:10,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868712744] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 00:23:10,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 00:23:10,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-09-13 00:23:10,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933101464] [2024-09-13 00:23:10,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 00:23:10,057 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-13 00:23:10,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:23:10,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-13 00:23:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-09-13 00:23:10,058 INFO L87 Difference]: Start difference. First operand 121 states and 173 transitions. Second operand has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-13 00:23:11,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:23:11,103 INFO L93 Difference]: Finished difference Result 244 states and 378 transitions. [2024-09-13 00:23:11,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 00:23:11,104 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) Word has length 95 [2024-09-13 00:23:11,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:23:11,106 INFO L225 Difference]: With dead ends: 244 [2024-09-13 00:23:11,106 INFO L226 Difference]: Without dead ends: 238 [2024-09-13 00:23:11,107 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 00:23:11,108 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 108 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 00:23:11,108 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 451 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 00:23:11,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-09-13 00:23:11,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 189. [2024-09-13 00:23:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 97 states have internal predecessors, (117), 84 states have call successors, (84), 11 states have call predecessors, (84), 10 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2024-09-13 00:23:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 282 transitions. [2024-09-13 00:23:11,200 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 282 transitions. Word has length 95 [2024-09-13 00:23:11,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:23:11,201 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 282 transitions. [2024-09-13 00:23:11,201 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-13 00:23:11,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:23:11,201 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 282 transitions. [2024-09-13 00:23:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-13 00:23:11,202 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:23:11,203 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:23:11,219 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 00:23:11,403 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:23:11,404 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:23:11,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:23:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1141291923, now seen corresponding path program 1 times [2024-09-13 00:23:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:23:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510549599] [2024-09-13 00:23:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:23:11,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:23:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:23:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:23:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:23:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:23:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:23:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-13 00:23:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-13 00:23:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 00:23:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 00:23:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 00:23:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 00:23:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 00:23:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-13 00:23:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-13 00:23:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-13 00:23:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-13 00:23:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-13 00:23:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 39 proven. 12 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-13 00:23:11,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:23:11,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510549599] [2024-09-13 00:23:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510549599] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:23:11,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461476445] [2024-09-13 00:23:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:23:11,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:23:11,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:23:11,720 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) [2024-09-13 00:23:11,721 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 00:23:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:11,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 00:23:11,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:23:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 99 proven. 12 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-09-13 00:23:11,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:23:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-13 00:23:11,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461476445] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 00:23:11,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 00:23:11,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-13 00:23:11,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144820882] [2024-09-13 00:23:11,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 00:23:11,971 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 00:23:11,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:23:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 00:23:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-09-13 00:23:11,972 INFO L87 Difference]: Start difference. First operand 189 states and 282 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-13 00:23:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:23:12,115 INFO L93 Difference]: Finished difference Result 200 states and 291 transitions. [2024-09-13 00:23:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 00:23:12,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 101 [2024-09-13 00:23:12,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:23:12,117 INFO L225 Difference]: With dead ends: 200 [2024-09-13 00:23:12,117 INFO L226 Difference]: Without dead ends: 71 [2024-09-13 00:23:12,119 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-09-13 00:23:12,120 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 00:23:12,120 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 299 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 00:23:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-13 00:23:12,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-09-13 00:23:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 25 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-13 00:23:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2024-09-13 00:23:12,140 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 101 [2024-09-13 00:23:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:23:12,140 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2024-09-13 00:23:12,141 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-13 00:23:12,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:23:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2024-09-13 00:23:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-13 00:23:12,142 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:23:12,142 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:23:12,159 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 00:23:12,346 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 00:23:12,347 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:23:12,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:23:12,347 INFO L85 PathProgramCache]: Analyzing trace with hash -183794789, now seen corresponding path program 2 times [2024-09-13 00:23:12,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:23:12,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206520986] [2024-09-13 00:23:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:23:12,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:23:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:23:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:23:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:23:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:23:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:23:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-13 00:23:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-13 00:23:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 00:23:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 00:23:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 00:23:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 00:23:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 00:23:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-13 00:23:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-13 00:23:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-13 00:23:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-13 00:23:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-13 00:23:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-13 00:23:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-13 00:23:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-13 00:23:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-13 00:23:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-13 00:23:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-13 00:23:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:23:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-13 00:23:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:23:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206520986] [2024-09-13 00:23:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206520986] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:23:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610375557] [2024-09-13 00:23:12,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 00:23:12,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:23:12,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:23:12,649 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) [2024-09-13 00:23:12,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 00:23:12,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 00:23:12,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 00:23:12,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 00:23:12,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:23:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-13 00:23:12,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:23:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-13 00:23:13,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610375557] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 00:23:13,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 00:23:13,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-09-13 00:23:13,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938385316] [2024-09-13 00:23:13,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 00:23:13,041 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 00:23:13,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:23:13,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 00:23:13,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-09-13 00:23:13,042 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) [2024-09-13 00:23:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:23:13,247 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2024-09-13 00:23:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 00:23:13,247 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) Word has length 134 [2024-09-13 00:23:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:23:13,248 INFO L225 Difference]: With dead ends: 71 [2024-09-13 00:23:13,248 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 00:23:13,248 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-09-13 00:23:13,249 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 20 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 00:23:13,249 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 438 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 00:23:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 00:23:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 00:23:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 00:23:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 00:23:13,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-13 00:23:13,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:23:13,250 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 00:23:13,250 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) [2024-09-13 00:23:13,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:23:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 00:23:13,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 00:23:13,253 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 00:23:13,267 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-13 00:23:13,453 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 00:23:13,456 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:23:13,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 00:23:14,450 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 00:23:14,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 12:23:14 BoogieIcfgContainer [2024-09-13 00:23:14,467 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 00:23:14,467 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 00:23:14,467 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 00:23:14,468 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 00:23:14,469 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 12:22:55" (3/4) ... [2024-09-13 00:23:14,470 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 00:23:14,473 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 00:23:14,474 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 00:23:14,474 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 00:23:14,474 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 00:23:14,477 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-09-13 00:23:14,478 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-09-13 00:23:14,478 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-13 00:23:14,478 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-13 00:23:14,573 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 00:23:14,574 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 00:23:14,574 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 00:23:14,574 INFO L158 Benchmark]: Toolchain (without parser) took 20121.74ms. Allocated memory was 165.7MB in the beginning and 281.0MB in the end (delta: 115.3MB). Free memory was 107.9MB in the beginning and 184.6MB in the end (delta: -76.7MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2024-09-13 00:23:14,575 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 165.7MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 00:23:14,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.24ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 95.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 00:23:14,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.26ms. Allocated memory is still 165.7MB. Free memory was 95.6MB in the beginning and 94.8MB in the end (delta: 843.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 00:23:14,575 INFO L158 Benchmark]: Boogie Preprocessor took 38.85ms. Allocated memory is still 165.7MB. Free memory was 94.4MB in the beginning and 92.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 00:23:14,576 INFO L158 Benchmark]: RCFGBuilder took 323.36ms. Allocated memory is still 165.7MB. Free memory was 92.8MB in the beginning and 78.1MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 00:23:14,576 INFO L158 Benchmark]: TraceAbstraction took 19380.28ms. Allocated memory was 165.7MB in the beginning and 281.0MB in the end (delta: 115.3MB). Free memory was 77.7MB in the beginning and 189.8MB in the end (delta: -112.1MB). Peak memory consumption was 108.8MB. Max. memory is 16.1GB. [2024-09-13 00:23:14,576 INFO L158 Benchmark]: Witness Printer took 106.69ms. Allocated memory is still 281.0MB. Free memory was 189.8MB in the beginning and 184.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-13 00:23:14,578 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 165.7MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.24ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 95.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.26ms. Allocated memory is still 165.7MB. Free memory was 95.6MB in the beginning and 94.8MB in the end (delta: 843.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.85ms. Allocated memory is still 165.7MB. Free memory was 94.4MB in the beginning and 92.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 323.36ms. Allocated memory is still 165.7MB. Free memory was 92.8MB in the beginning and 78.1MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 19380.28ms. Allocated memory was 165.7MB in the beginning and 281.0MB in the end (delta: 115.3MB). Free memory was 77.7MB in the beginning and 189.8MB in the end (delta: -112.1MB). Peak memory consumption was 108.8MB. Max. memory is 16.1GB. * Witness Printer took 106.69ms. Allocated memory is still 281.0MB. Free memory was 189.8MB in the beginning and 184.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.3s, OverallIterations: 11, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 416 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 3076 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2640 mSDsCounter, 402 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1934 IncrementalHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 402 mSolverCounterUnsat, 436 mSDtfsCounter, 1934 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1471 GetRequests, 1281 SyntacticMatches, 6 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=9, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 108 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 1540 NumberOfCodeBlocks, 1540 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1603 ConstructedInterpolants, 0 QuantifiedInterpolants, 5248 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1837 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 3904/4266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (k == 0)) && (s == 1)) && (x == 1)) && (q == 0)) && (yy == 1)) && (c == 1)) && (p == 1)) || (((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (s == 1)) && (x == 1)) && (k == 1)) && (q == 0)) && (c == 0)) && (yy == 1)) && (p == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (s == 1)) && (x == 1)) && (q == 0)) && (yy == 1)) && (p == 1)) || (((((b == 0) && (y == 1)) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (x == 1)) && ((q + s) == 0))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-13 00:23:14,601 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE