./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2436c69c19f049d89ef519f7bd9d4cf3f7b648737fca21472b0299c532d84f11 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 16:23:21,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:23:22,021 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 16:23:22,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:23:22,029 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:23:22,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:23:22,060 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:23:22,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:23:22,061 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:23:22,061 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:23:22,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:23:22,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:23:22,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:23:22,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:23:22,064 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:23:22,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:23:22,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:23:22,066 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:23:22,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:23:22,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:23:22,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:23:22,069 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:23:22,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:23:22,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:23:22,070 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:23:22,070 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:23:22,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:23:22,071 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:23:22,071 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:23:22,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:23:22,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:23:22,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:23:22,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:23:22,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:23:22,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:23:22,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:23:22,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:23:22,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:23:22,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:23:22,077 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:23:22,077 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:23:22,077 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:23:22,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2436c69c19f049d89ef519f7bd9d4cf3f7b648737fca21472b0299c532d84f11 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:23:22,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:23:22,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:23:22,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:23:22,416 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:23:22,416 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:23:22,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c [2024-09-12 16:23:23,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:23:23,965 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:23:23,966 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c [2024-09-12 16:23:23,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/017dbb600/b014757ea09d4860ad5208fda83a1efd/FLAG4633d17f8 [2024-09-12 16:23:24,365 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/017dbb600/b014757ea09d4860ad5208fda83a1efd [2024-09-12 16:23:24,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:23:24,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:23:24,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:23:24,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:23:24,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:23:24,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3948324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24, skipping insertion in model container [2024-09-12 16:23:24,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,391 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:23:24,564 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/ps5-ll_valuebound100.c[458,471] [2024-09-12 16:23:24,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:23:24,601 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:23:24,612 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/ps5-ll_valuebound100.c[458,471] [2024-09-12 16:23:24,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:23:24,642 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:23:24,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24 WrapperNode [2024-09-12 16:23:24,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:23:24,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:23:24,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:23:24,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:23:24,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,663 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:23:24,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:23:24,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:23:24,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:23:24,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:23:24,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,676 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,690 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-12 16:23:24,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,701 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:23:24,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:23:24,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:23:24,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:23:24,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (1/1) ... [2024-09-12 16:23:24,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:23:24,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:23:24,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 16:23:24,746 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 16:23:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:23:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 16:23:24,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 16:23:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:23:24,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:23:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 16:23:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:23:24,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:23:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:23:24,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:23:24,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 16:23:24,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 16:23:24,854 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:23:24,856 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:23:24,996 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-12 16:23:24,996 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:23:25,021 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:23:25,021 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 16:23:25,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:23:25 BoogieIcfgContainer [2024-09-12 16:23:25,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:23:25,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:23:25,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:23:25,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:23:25,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:23:24" (1/3) ... [2024-09-12 16:23:25,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bdc7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:23:25, skipping insertion in model container [2024-09-12 16:23:25,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:23:24" (2/3) ... [2024-09-12 16:23:25,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bdc7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:23:25, skipping insertion in model container [2024-09-12 16:23:25,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:23:25" (3/3) ... [2024-09-12 16:23:25,030 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound100.c [2024-09-12 16:23:25,055 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:23:25,055 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:23:25,113 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:23:25,119 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;@1a586d94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:23:25,120 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:23:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 16:23:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 16:23:25,131 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:23:25,132 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:23:25,133 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:23:25,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-12 16:23:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:23:25,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470308838] [2024-09-12 16:23:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:23:25,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:23:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:23:25,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:23:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:23:25,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:23:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:23:25,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 16:23:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:23:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 16:23:25,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:23:25,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470308838] [2024-09-12 16:23:25,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470308838] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:23:25,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:23:25,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 16:23:25,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332767669] [2024-09-12 16:23:25,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:23:25,342 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 16:23:25,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:23:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 16:23:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 16:23:25,372 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 16:23:25,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:23:25,405 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-12 16:23:25,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 16:23:25,408 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-12 16:23:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:23:25,415 INFO L225 Difference]: With dead ends: 48 [2024-09-12 16:23:25,415 INFO L226 Difference]: Without dead ends: 23 [2024-09-12 16:23:25,418 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 16:23:25,423 INFO L434 NwaCegarLoop]: 28 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, 28 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 [2024-09-12 16:23:25,425 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:23:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-12 16:23:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-12 16:23:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 16:23:25,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-12 16:23:25,461 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-12 16:23:25,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:23:25,463 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-12 16:23:25,463 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 16:23:25,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:25,464 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-12 16:23:25,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 16:23:25,469 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:23:25,469 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:23:25,469 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 16:23:25,470 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:23:25,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:25,470 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-12 16:23:25,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:23:25,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643943668] [2024-09-12 16:23:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:23:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:23:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:23:25,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939381662] [2024-09-12 16:23:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:23:25,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:23:25,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:23:25,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:23:25,532 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 16:23:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:23:25,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 16:23:25,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:23:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 16:23:25,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 16:23:25,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:23:25,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643943668] [2024-09-12 16:23:25,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:23:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939381662] [2024-09-12 16:23:25,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939381662] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:23:25,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:23:25,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:23:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681600772] [2024-09-12 16:23:25,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:23:25,781 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:23:25,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:23:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:23:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:23:25,784 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 16:23:25,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:23:25,838 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-12 16:23:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:23:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-12 16:23:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:23:25,839 INFO L225 Difference]: With dead ends: 34 [2024-09-12 16:23:25,839 INFO L226 Difference]: Without dead ends: 30 [2024-09-12 16:23:25,840 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:23:25,841 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:23:25,842 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:23:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-12 16:23:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-12 16:23:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 16:23:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-12 16:23:25,850 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-12 16:23:25,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:23:25,851 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-12 16:23:25,851 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 16:23:25,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:25,851 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-12 16:23:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 16:23:25,852 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:23:25,852 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:23:25,869 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 16:23:26,053 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 [2024-09-12 16:23:26,053 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:23:26,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-12 16:23:26,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:23:26,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807586266] [2024-09-12 16:23:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:23:26,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:23:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:23:26,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370917024] [2024-09-12 16:23:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:23:26,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:23:26,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:23:26,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:23:26,090 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 16:23:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:23:26,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 16:23:26,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:23:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 16:23:26,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:23:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 16:23:26,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:23:26,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807586266] [2024-09-12 16:23:26,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:23:26,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370917024] [2024-09-12 16:23:26,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370917024] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 16:23:26,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 16:23:26,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-12 16:23:26,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840522726] [2024-09-12 16:23:26,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:23:26,419 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:23:26,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:23:26,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:23:26,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 16:23:26,425 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 16:23:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:23:26,486 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-12 16:23:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:23:26,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-12 16:23:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:23:26,488 INFO L225 Difference]: With dead ends: 36 [2024-09-12 16:23:26,488 INFO L226 Difference]: Without dead ends: 32 [2024-09-12 16:23:26,488 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 16:23:26,489 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:23:26,490 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:23:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-12 16:23:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-12 16:23:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 16:23:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-12 16:23:26,504 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-12 16:23:26,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:23:26,504 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-12 16:23:26,505 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 16:23:26,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-12 16:23:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 16:23:26,506 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:23:26,506 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:23:26,521 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 16:23:26,710 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 [2024-09-12 16:23:26,711 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:23:26,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-12 16:23:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:23:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851848409] [2024-09-12 16:23:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:23:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:23:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:23:26,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159304436] [2024-09-12 16:23:26,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:23:26,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:23:26,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:23:26,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:23:26,750 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 16:23:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:23:26,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 16:23:26,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:23:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 16:23:26,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:23:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 16:23:27,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:23:27,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851848409] [2024-09-12 16:23:27,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:23:27,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159304436] [2024-09-12 16:23:27,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159304436] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:23:27,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:23:27,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-12 16:23:27,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174206060] [2024-09-12 16:23:27,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:23:27,033 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 16:23:27,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:23:27,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 16:23:27,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-12 16:23:27,035 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-12 16:23:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:23:27,168 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-09-12 16:23:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 16:23:27,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-12 16:23:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:23:27,170 INFO L225 Difference]: With dead ends: 49 [2024-09-12 16:23:27,170 INFO L226 Difference]: Without dead ends: 41 [2024-09-12 16:23:27,171 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-12 16:23:27,172 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:23:27,175 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 135 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:23:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-12 16:23:27,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-12 16:23:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 16:23:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-09-12 16:23:27,201 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 39 [2024-09-12 16:23:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:23:27,201 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-09-12 16:23:27,201 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-12 16:23:27,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-09-12 16:23:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 16:23:27,203 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:23:27,203 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:23:27,218 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 16:23:27,403 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 [2024-09-12 16:23:27,404 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:23:27,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-12 16:23:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:23:27,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919642749] [2024-09-12 16:23:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:23:27,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:23:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:23:27,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126922479] [2024-09-12 16:23:27,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:23:27,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:23:27,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:23:27,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:23:27,467 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 16:23:27,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:23:27,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:23:27,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 16:23:27,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:23:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-12 16:23:27,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:23:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-12 16:23:28,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:23:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919642749] [2024-09-12 16:23:28,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:23:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126922479] [2024-09-12 16:23:28,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126922479] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:23:28,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:23:28,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-09-12 16:23:28,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223563502] [2024-09-12 16:23:28,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:23:28,146 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 16:23:28,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:23:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 16:23:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-09-12 16:23:28,149 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 21 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-12 16:23:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:23:28,682 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2024-09-12 16:23:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 16:23:28,682 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) Word has length 60 [2024-09-12 16:23:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:23:28,683 INFO L225 Difference]: With dead ends: 66 [2024-09-12 16:23:28,684 INFO L226 Difference]: Without dead ends: 58 [2024-09-12 16:23:28,684 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2024-09-12 16:23:28,685 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:23:28,689 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 387 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:23:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-12 16:23:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-09-12 16:23:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 16 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 16:23:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-09-12 16:23:28,724 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 60 [2024-09-12 16:23:28,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:23:28,724 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-09-12 16:23:28,724 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-12 16:23:28,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:28,725 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-09-12 16:23:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-12 16:23:28,730 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:23:28,730 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:23:28,746 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 16:23:28,930 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 [2024-09-12 16:23:28,930 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:23:28,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:23:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash -235169010, now seen corresponding path program 3 times [2024-09-12 16:23:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:23:28,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858671117] [2024-09-12 16:23:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:23:28,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:23:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:23:29,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193579422] [2024-09-12 16:23:29,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:23:29,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:23:29,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:23:29,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:23:29,091 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 16:23:29,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-12 16:23:29,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:23:29,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 16:23:29,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:23:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 27 proven. 160 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-09-12 16:23:29,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:23:38,021 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ (* 7 c_main_~c~0) (* c_main_~c~0 c_main_~y~0)) (+ (* 7 c_main_~y~0) (* c_main_~y~0 c_main_~y~0))) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0))) is different from false [2024-09-12 16:23:50,089 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 16:24:02,105 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 16:24:10,122 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_45 Int) (v_main_~c~0_BEFORE_CALL_32 Int)) (or (= (+ (* 7 v_main_~c~0_BEFORE_CALL_32) (* v_main_~y~0_BEFORE_CALL_45 v_main_~c~0_BEFORE_CALL_32)) (+ (* 7 v_main_~y~0_BEFORE_CALL_45) (* v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45))) (= (mod (+ (* 29 v_main_~y~0_BEFORE_CALL_45) (* v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 15) (* v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 10) (* v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 6)) 30) 0)))) is different from true [2024-09-12 16:24:22,138 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 16:24:38,311 WARN L293 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 16:24:46,328 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_45 Int) (v_main_~c~0_BEFORE_CALL_32 Int)) (or (= (+ (* 7 v_main_~c~0_BEFORE_CALL_32) (* v_main_~y~0_BEFORE_CALL_45 v_main_~c~0_BEFORE_CALL_32)) (+ (* 7 v_main_~y~0_BEFORE_CALL_45) (* v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45))) (= (mod (+ (* 29 v_main_~y~0_BEFORE_CALL_45) (* v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 15) (* v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 10) (* v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 v_main_~y~0_BEFORE_CALL_45 6)) 30) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2024-09-12 16:25:01,728 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ (* 8 c_main_~y~0) (* c_main_~y~0 c_main_~y~0)) (+ (* c_main_~c~0 8) (* c_main_~c~0 c_main_~y~0))) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0))) is different from false [2024-09-12 16:25:17,796 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ (* 9 c_main_~y~0) (* c_main_~y~0 c_main_~y~0)) (+ (* c_main_~c~0 c_main_~y~0) (* 9 c_main_~c~0))) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0))) is different from false [2024-09-12 16:25:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 27 proven. 70 refuted. 24 times theorem prover too weak. 194 trivial. 66 not checked. [2024-09-12 16:25:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:25:25,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858671117] [2024-09-12 16:25:25,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:25:25,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193579422] [2024-09-12 16:25:25,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193579422] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:25:25,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:25:25,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2024-09-12 16:25:25,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152672806] [2024-09-12 16:25:25,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:25:25,856 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 16:25:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:25:25,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 16:25:25,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=585, Unknown=5, NotChecked=270, Total=992 [2024-09-12 16:25:25,860 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 23 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-09-12 16:25:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:25:26,539 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2024-09-12 16:25:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 16:25:26,540 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 23 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) Word has length 95 [2024-09-12 16:25:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:25:26,542 INFO L225 Difference]: With dead ends: 61 [2024-09-12 16:25:26,542 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 16:25:26,543 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 159 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=258, Invalid=1163, Unknown=5, NotChecked=380, Total=1806 [2024-09-12 16:25:26,548 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 16:25:26,549 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 581 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 449 Invalid, 0 Unknown, 255 Unchecked, 0.4s Time] [2024-09-12 16:25:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 16:25:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 16:25:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-12 16:25:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 16:25:26,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2024-09-12 16:25:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:25:26,550 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 16:25:26,550 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 23 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-09-12 16:25:26,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:25:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 16:25:26,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 16:25:26,556 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-12 16:25:26,573 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 16:25:26,760 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 [2024-09-12 16:25:26,763 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-09-12 16:25:26,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 16:25:27,250 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 16:25:27,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 04:25:27 BoogieIcfgContainer [2024-09-12 16:25:27,275 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 16:25:27,276 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 16:25:27,276 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 16:25:27,276 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 16:25:27,276 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:23:25" (3/4) ... [2024-09-12 16:25:27,282 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 16:25:27,285 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 16:25:27,286 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-12 16:25:27,286 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 16:25:27,287 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-12 16:25:27,291 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-09-12 16:25:27,292 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-12 16:25:27,292 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-12 16:25:27,292 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 16:25:27,380 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 16:25:27,380 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 16:25:27,380 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 16:25:27,381 INFO L158 Benchmark]: Toolchain (without parser) took 123013.21ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 36.2MB in the beginning and 73.2MB in the end (delta: -37.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:25:27,383 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 52.4MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:25:27,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.89ms. Allocated memory is still 69.2MB. Free memory was 36.0MB in the beginning and 42.2MB in the end (delta: -6.2MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2024-09-12 16:25:27,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.73ms. Allocated memory is still 69.2MB. Free memory was 42.2MB in the beginning and 41.3MB in the end (delta: 896.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:25:27,384 INFO L158 Benchmark]: Boogie Preprocessor took 41.15ms. Allocated memory is still 69.2MB. Free memory was 41.3MB in the beginning and 39.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:25:27,384 INFO L158 Benchmark]: RCFGBuilder took 315.55ms. Allocated memory is still 69.2MB. Free memory was 39.6MB in the beginning and 27.4MB in the end (delta: 12.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-12 16:25:27,385 INFO L158 Benchmark]: TraceAbstraction took 122251.42ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 26.8MB in the beginning and 78.4MB in the end (delta: -51.7MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2024-09-12 16:25:27,385 INFO L158 Benchmark]: Witness Printer took 104.70ms. Allocated memory is still 104.9MB. Free memory was 78.4MB in the beginning and 73.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-12 16:25:27,386 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 52.4MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.89ms. Allocated memory is still 69.2MB. Free memory was 36.0MB in the beginning and 42.2MB in the end (delta: -6.2MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.73ms. Allocated memory is still 69.2MB. Free memory was 42.2MB in the beginning and 41.3MB in the end (delta: 896.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.15ms. Allocated memory is still 69.2MB. Free memory was 41.3MB in the beginning and 39.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 315.55ms. Allocated memory is still 69.2MB. Free memory was 39.6MB in the beginning and 27.4MB in the end (delta: 12.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 122251.42ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 26.8MB in the beginning and 78.4MB in the end (delta: -51.7MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * Witness Printer took 104.70ms. Allocated memory is still 104.9MB. Free memory was 78.4MB in the beginning and 73.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 121.7s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 1281 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 255 IncrementalHoareTripleChecker+Unchecked, 1119 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 794 IncrementalHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 162 mSDtfsCounter, 794 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 501 GetRequests, 401 SyntacticMatches, 8 SemanticMatches, 92 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 24.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=5, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 117.9s InterpolantComputationTime, 507 NumberOfCodeBlocks, 507 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 476 ConstructedInterpolants, 3 QuantifiedInterpolants, 2273 SizeOfPredicates, 10 NumberOfNonLiveVariables, 632 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 660/1048 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: 28]: Loop Invariant Derived loop invariant: (((((k <= 256) && ((((__int128) y * y) + ((__int128) y * 4)) == (((__int128) c * 4) + ((__int128) c * y)))) && ((c + ((__int128) c * y)) == (y + ((__int128) y * y)))) && ((y + ((__int128) 30 * x)) == (((((((__int128) y * y) * y) * y) * 15) + (6 * (((((__int128) y * y) * y) * y) * y))) + ((((__int128) y * y) * y) * 10)))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 9]: 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! [2024-09-12 16:25:27,421 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