./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Primes.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Primes.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 19:43:18,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 19:43:18,817 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 19:43:18,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 19:43:18,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 19:43:18,861 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 19:43:18,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 19:43:18,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 19:43:18,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 19:43:18,867 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 19:43:18,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 19:43:18,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 19:43:18,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 19:43:18,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 19:43:18,869 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 19:43:18,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 19:43:18,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 19:43:18,870 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 19:43:18,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 19:43:18,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 19:43:18,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 19:43:18,875 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 19:43:18,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 19:43:18,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 19:43:18,876 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 19:43:18,876 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 19:43:18,876 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 19:43:18,876 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 19:43:18,877 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 19:43:18,877 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 19:43:18,877 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 19:43:18,877 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 19:43:18,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:43:18,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 19:43:18,878 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 19:43:18,880 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 19:43:18,880 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 19:43:18,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 19:43:18,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 19:43:18,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 19:43:18,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 19:43:18,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 19:43:18,882 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 19:43:19,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 19:43:19,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 19:43:19,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 19:43:19,262 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 19:43:19,262 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 19:43:19,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Primes.c [2024-09-15 19:43:20,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 19:43:21,009 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 19:43:21,009 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Primes.c [2024-09-15 19:43:21,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/ffcb19edc/b3343879d40642df94454fefb81ce8f8/FLAG711107596 [2024-09-15 19:43:21,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/ffcb19edc/b3343879d40642df94454fefb81ce8f8 [2024-09-15 19:43:21,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 19:43:21,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 19:43:21,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 19:43:21,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 19:43:21,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 19:43:21,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314d6308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21, skipping insertion in model container [2024-09-15 19:43:21,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,433 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 19:43:21,604 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2024-09-15 19:43:21,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:43:21,623 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 19:43:21,647 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2024-09-15 19:43:21,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:43:21,670 INFO L204 MainTranslator]: Completed translation [2024-09-15 19:43:21,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21 WrapperNode [2024-09-15 19:43:21,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 19:43:21,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 19:43:21,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 19:43:21,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 19:43:21,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,694 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 19:43:21,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 19:43:21,696 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 19:43:21,696 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 19:43:21,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 19:43:21,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,732 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]. [2024-09-15 19:43:21,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 19:43:21,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 19:43:21,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 19:43:21,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 19:43:21,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (1/1) ... [2024-09-15 19:43:21,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:43:21,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:43:21,787 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) [2024-09-15 19:43:21,790 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 [2024-09-15 19:43:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2024-09-15 19:43:21,839 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2024-09-15 19:43:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 19:43:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2024-09-15 19:43:21,840 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2024-09-15 19:43:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2024-09-15 19:43:21,840 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2024-09-15 19:43:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 19:43:21,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 19:43:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 19:43:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime [2024-09-15 19:43:21,842 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime [2024-09-15 19:43:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 19:43:21,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 19:43:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 19:43:21,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 19:43:21,919 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 19:43:21,922 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 19:43:22,218 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-09-15 19:43:22,219 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 19:43:22,245 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 19:43:22,245 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-15 19:43:22,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:43:22 BoogieIcfgContainer [2024-09-15 19:43:22,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 19:43:22,248 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 19:43:22,248 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 19:43:22,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 19:43:22,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:43:21" (1/3) ... [2024-09-15 19:43:22,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38995250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:43:22, skipping insertion in model container [2024-09-15 19:43:22,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:21" (2/3) ... [2024-09-15 19:43:22,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38995250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:43:22, skipping insertion in model container [2024-09-15 19:43:22,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:43:22" (3/3) ... [2024-09-15 19:43:22,258 INFO L112 eAbstractionObserver]: Analyzing ICFG Primes.c [2024-09-15 19:43:22,273 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 19:43:22,274 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 19:43:22,345 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 19:43:22,354 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;@67a5e8ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 19:43:22,355 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 19:43:22,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 40 states have internal predecessors, (57), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 19:43:22,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-15 19:43:22,367 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:22,368 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:22,368 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:22,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash 745641163, now seen corresponding path program 1 times [2024-09-15 19:43:22,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:22,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944717615] [2024-09-15 19:43:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:22,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:22,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:22,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:22,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:43:22,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:22,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944717615] [2024-09-15 19:43:22,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944717615] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:43:22,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:43:22,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 19:43:22,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291540046] [2024-09-15 19:43:22,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:43:22,595 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 19:43:22,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 19:43:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 19:43:22,621 INFO L87 Difference]: Start difference. First operand has 59 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 40 states have internal predecessors, (57), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 19:43:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:22,672 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2024-09-15 19:43:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 19:43:22,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-15 19:43:22,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:22,683 INFO L225 Difference]: With dead ends: 66 [2024-09-15 19:43:22,683 INFO L226 Difference]: Without dead ends: 55 [2024-09-15 19:43:22,686 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 19:43:22,689 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:22,690 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:43:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-15 19:43:22,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-09-15 19:43:22,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 19:43:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-09-15 19:43:22,746 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 21 [2024-09-15 19:43:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:22,748 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-09-15 19:43:22,749 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 19:43:22,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-09-15 19:43:22,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-15 19:43:22,756 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:22,756 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:22,760 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 19:43:22,760 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:22,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:22,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1491686554, now seen corresponding path program 1 times [2024-09-15 19:43:22,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:22,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010778004] [2024-09-15 19:43:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-15 19:43:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:43:23,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:23,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010778004] [2024-09-15 19:43:23,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010778004] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:43:23,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:43:23,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-15 19:43:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434100474] [2024-09-15 19:43:23,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:43:23,267 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 19:43:23,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 19:43:23,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-15 19:43:23,270 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 19:43:23,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:23,347 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2024-09-15 19:43:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 19:43:23,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-15 19:43:23,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:23,353 INFO L225 Difference]: With dead ends: 78 [2024-09-15 19:43:23,354 INFO L226 Difference]: Without dead ends: 57 [2024-09-15 19:43:23,354 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-15 19:43:23,355 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:23,356 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 468 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:43:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-15 19:43:23,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-15 19:43:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 39 states have internal predecessors, (50), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-09-15 19:43:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-09-15 19:43:23,375 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 28 [2024-09-15 19:43:23,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:23,376 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-09-15 19:43:23,376 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 19:43:23,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-09-15 19:43:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-15 19:43:23,378 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:23,379 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:23,380 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 19:43:23,381 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:23,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1689656639, now seen corresponding path program 1 times [2024-09-15 19:43:23,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:23,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590863031] [2024-09-15 19:43:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:23,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 19:43:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:43:23,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:23,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590863031] [2024-09-15 19:43:23,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590863031] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:43:23,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:43:23,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-15 19:43:23,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870349289] [2024-09-15 19:43:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:43:23,551 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 19:43:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 19:43:23,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-15 19:43:23,552 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 19:43:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:23,603 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2024-09-15 19:43:23,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 19:43:23,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-09-15 19:43:23,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:23,606 INFO L225 Difference]: With dead ends: 63 [2024-09-15 19:43:23,606 INFO L226 Difference]: Without dead ends: 59 [2024-09-15 19:43:23,606 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-15 19:43:23,609 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:23,610 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 265 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:43:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-15 19:43:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-09-15 19:43:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 41 states have internal predecessors, (51), 12 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-15 19:43:23,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2024-09-15 19:43:23,628 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 29 [2024-09-15 19:43:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:23,628 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2024-09-15 19:43:23,628 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 19:43:23,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2024-09-15 19:43:23,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-15 19:43:23,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:23,634 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:23,634 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 19:43:23,635 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:23,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash -145981177, now seen corresponding path program 1 times [2024-09-15 19:43:23,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:23,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002278526] [2024-09-15 19:43:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:23,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 19:43:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:43:23,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:23,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002278526] [2024-09-15 19:43:23,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002278526] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:43:23,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:43:23,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 19:43:23,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799231562] [2024-09-15 19:43:23,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:43:23,742 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:43:23,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:23,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:43:23,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:43:23,743 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 19:43:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:23,823 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2024-09-15 19:43:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 19:43:23,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-15 19:43:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:23,826 INFO L225 Difference]: With dead ends: 67 [2024-09-15 19:43:23,826 INFO L226 Difference]: Without dead ends: 63 [2024-09-15 19:43:23,831 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 19:43:23,832 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 7 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:23,832 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 230 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:43:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-15 19:43:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-09-15 19:43:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 41 states have internal predecessors, (51), 12 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-15 19:43:23,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2024-09-15 19:43:23,850 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 30 [2024-09-15 19:43:23,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:23,851 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2024-09-15 19:43:23,851 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 19:43:23,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2024-09-15 19:43:23,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-15 19:43:23,852 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:23,853 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:23,853 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 19:43:23,853 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:23,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:23,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1109477137, now seen corresponding path program 1 times [2024-09-15 19:43:23,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:23,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581871894] [2024-09-15 19:43:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:23,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 19:43:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:23,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-15 19:43:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 19:43:24,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:24,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581871894] [2024-09-15 19:43:24,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581871894] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:43:24,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235073921] [2024-09-15 19:43:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:24,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:43:24,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:43:24,008 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) [2024-09-15 19:43:24,010 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 19:43:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:24,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-15 19:43:24,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:43:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-15 19:43:24,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:43:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 19:43:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235073921] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:43:24,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:43:24,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-09-15 19:43:24,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460592212] [2024-09-15 19:43:24,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:43:24,409 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-15 19:43:24,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:24,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-15 19:43:24,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-09-15 19:43:24,411 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-15 19:43:24,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:24,560 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-09-15 19:43:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-15 19:43:24,561 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 37 [2024-09-15 19:43:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:24,562 INFO L225 Difference]: With dead ends: 76 [2024-09-15 19:43:24,566 INFO L226 Difference]: Without dead ends: 57 [2024-09-15 19:43:24,567 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-09-15 19:43:24,568 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 26 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:24,568 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 458 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:43:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-15 19:43:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-15 19:43:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.263157894736842) internal successors, (48), 40 states have internal predecessors, (48), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-15 19:43:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2024-09-15 19:43:24,583 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 37 [2024-09-15 19:43:24,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:24,583 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2024-09-15 19:43:24,583 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-15 19:43:24,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2024-09-15 19:43:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-15 19:43:24,585 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:24,585 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:24,605 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 19:43:24,793 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:43:24,794 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:24,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:24,794 INFO L85 PathProgramCache]: Analyzing trace with hash -466412443, now seen corresponding path program 1 times [2024-09-15 19:43:24,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:24,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366342429] [2024-09-15 19:43:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:24,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:24,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:24,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:24,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:25,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 19:43:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:25,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-15 19:43:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 19:43:25,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366342429] [2024-09-15 19:43:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366342429] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:43:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851257567] [2024-09-15 19:43:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:25,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:43:25,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:43:25,112 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) [2024-09-15 19:43:25,115 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 19:43:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:25,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-15 19:43:25,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:43:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 19:43:25,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:43:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 19:43:25,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851257567] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:43:25,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:43:25,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-09-15 19:43:25,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676569888] [2024-09-15 19:43:25,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:43:25,806 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-15 19:43:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-15 19:43:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-09-15 19:43:25,810 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 24 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-15 19:43:26,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:26,148 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2024-09-15 19:43:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-15 19:43:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) Word has length 38 [2024-09-15 19:43:26,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:26,152 INFO L225 Difference]: With dead ends: 79 [2024-09-15 19:43:26,154 INFO L226 Difference]: Without dead ends: 60 [2024-09-15 19:43:26,155 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2024-09-15 19:43:26,155 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 35 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:26,158 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 738 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:43:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-15 19:43:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2024-09-15 19:43:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-15 19:43:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-09-15 19:43:26,168 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 38 [2024-09-15 19:43:26,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:26,169 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-09-15 19:43:26,169 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-15 19:43:26,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:26,169 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-09-15 19:43:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-15 19:43:26,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:26,170 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:26,187 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 19:43:26,374 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-15 19:43:26,375 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:26,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:26,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1285413673, now seen corresponding path program 1 times [2024-09-15 19:43:26,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:26,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748586705] [2024-09-15 19:43:26,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:26,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-15 19:43:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-15 19:43:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-15 19:43:26,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:26,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748586705] [2024-09-15 19:43:26,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748586705] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:43:26,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:43:26,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-15 19:43:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048249392] [2024-09-15 19:43:26,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:43:26,524 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 19:43:26,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:26,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 19:43:26,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-15 19:43:26,525 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-15 19:43:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:26,566 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2024-09-15 19:43:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 19:43:26,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-09-15 19:43:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:26,567 INFO L225 Difference]: With dead ends: 80 [2024-09-15 19:43:26,567 INFO L226 Difference]: Without dead ends: 59 [2024-09-15 19:43:26,568 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-15 19:43:26,568 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 14 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:26,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 201 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:43:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-15 19:43:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-09-15 19:43:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-15 19:43:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-09-15 19:43:26,581 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 40 [2024-09-15 19:43:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:26,581 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-09-15 19:43:26,582 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-15 19:43:26,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-09-15 19:43:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-15 19:43:26,584 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:26,584 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:26,584 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-15 19:43:26,584 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:26,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2101385548, now seen corresponding path program 1 times [2024-09-15 19:43:26,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:26,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736180718] [2024-09-15 19:43:26,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:26,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-15 19:43:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 19:43:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-15 19:43:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-15 19:43:26,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736180718] [2024-09-15 19:43:26,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736180718] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:43:26,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:43:26,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 19:43:26,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948649289] [2024-09-15 19:43:26,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:43:26,712 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:43:26,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:26,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:43:26,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:43:26,713 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-15 19:43:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:26,769 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions. [2024-09-15 19:43:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 19:43:26,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-09-15 19:43:26,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:26,771 INFO L225 Difference]: With dead ends: 113 [2024-09-15 19:43:26,772 INFO L226 Difference]: Without dead ends: 57 [2024-09-15 19:43:26,772 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 [2024-09-15 19:43:26,773 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 19 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:26,773 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 197 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:43:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-15 19:43:26,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-09-15 19:43:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.135135135135135) internal successors, (42), 39 states have internal predecessors, (42), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2024-09-15 19:43:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2024-09-15 19:43:26,788 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 58 [2024-09-15 19:43:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:26,788 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2024-09-15 19:43:26,788 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-15 19:43:26,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2024-09-15 19:43:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-15 19:43:26,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:26,790 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:26,790 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-15 19:43:26,790 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:26,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:26,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1599878374, now seen corresponding path program 1 times [2024-09-15 19:43:26,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:26,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102543240] [2024-09-15 19:43:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:26,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 19:43:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 19:43:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-15 19:43:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 19:43:26,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:26,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102543240] [2024-09-15 19:43:26,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102543240] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:43:26,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271837478] [2024-09-15 19:43:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:26,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:43:26,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:43:26,930 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) [2024-09-15 19:43:26,932 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 19:43:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:26,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-15 19:43:26,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:43:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 19:43:27,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 19:43:27,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271837478] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:43:27,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 19:43:27,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-15 19:43:27,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933330702] [2024-09-15 19:43:27,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:43:27,021 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:43:27,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:27,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:43:27,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-15 19:43:27,022 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-15 19:43:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:27,070 INFO L93 Difference]: Finished difference Result 105 states and 127 transitions. [2024-09-15 19:43:27,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 19:43:27,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2024-09-15 19:43:27,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:27,071 INFO L225 Difference]: With dead ends: 105 [2024-09-15 19:43:27,072 INFO L226 Difference]: Without dead ends: 59 [2024-09-15 19:43:27,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-15 19:43:27,073 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 13 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:27,073 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 175 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:43:27,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-15 19:43:27,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-09-15 19:43:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.131578947368421) internal successors, (43), 41 states have internal predecessors, (43), 10 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-15 19:43:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-09-15 19:43:27,082 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 59 [2024-09-15 19:43:27,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:27,082 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-09-15 19:43:27,082 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-15 19:43:27,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:27,082 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-09-15 19:43:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-15 19:43:27,083 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:27,083 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:27,100 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 19:43:27,287 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-15 19:43:27,288 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:27,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -904213436, now seen corresponding path program 1 times [2024-09-15 19:43:27,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:27,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472062173] [2024-09-15 19:43:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:27,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-15 19:43:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 19:43:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-15 19:43:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-15 19:43:27,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472062173] [2024-09-15 19:43:27,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472062173] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:43:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318281639] [2024-09-15 19:43:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:27,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:43:27,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:43:27,580 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) [2024-09-15 19:43:27,582 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 19:43:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-15 19:43:27,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:43:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 19:43:27,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:43:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 19:43:28,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318281639] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:43:28,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:43:28,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2024-09-15 19:43:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719035172] [2024-09-15 19:43:28,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:43:28,261 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-15 19:43:28,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-15 19:43:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-15 19:43:28,263 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-15 19:43:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:28,574 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2024-09-15 19:43:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 19:43:28,575 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 10 states have call successors, (16) Word has length 68 [2024-09-15 19:43:28,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:28,576 INFO L225 Difference]: With dead ends: 99 [2024-09-15 19:43:28,577 INFO L226 Difference]: Without dead ends: 67 [2024-09-15 19:43:28,577 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-09-15 19:43:28,578 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 34 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:28,579 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 498 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:43:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-15 19:43:28,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2024-09-15 19:43:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.125) internal successors, (45), 43 states have internal predecessors, (45), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-15 19:43:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-09-15 19:43:28,591 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 68 [2024-09-15 19:43:28,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:28,592 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-09-15 19:43:28,592 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-15 19:43:28,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:28,592 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-09-15 19:43:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-15 19:43:28,593 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:28,593 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:28,613 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 19:43:28,797 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:43:28,798 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:28,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:28,798 INFO L85 PathProgramCache]: Analyzing trace with hash -640732844, now seen corresponding path program 2 times [2024-09-15 19:43:28,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:28,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178950581] [2024-09-15 19:43:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:28,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:28,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:28,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:28,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:29,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:29,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:29,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:29,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 19:43:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:29,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 19:43:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:29,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-15 19:43:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-15 19:43:29,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178950581] [2024-09-15 19:43:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178950581] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:43:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278552915] [2024-09-15 19:43:29,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:43:29,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:43:29,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:43:29,179 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) [2024-09-15 19:43:29,181 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 19:43:29,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:43:29,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:43:29,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-15 19:43:29,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:43:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-15 19:43:29,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:43:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-15 19:43:30,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278552915] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:43:30,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:43:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 22 [2024-09-15 19:43:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461893843] [2024-09-15 19:43:30,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:43:30,317 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-15 19:43:30,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:30,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-15 19:43:30,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-09-15 19:43:30,318 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 22 states, 19 states have (on average 5.0) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (18), 2 states have call predecessors, (18), 7 states have return successors, (20), 7 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-15 19:43:30,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:30,776 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2024-09-15 19:43:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-15 19:43:30,776 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.0) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (18), 2 states have call predecessors, (18), 7 states have return successors, (20), 7 states have call predecessors, (20), 12 states have call successors, (20) Word has length 77 [2024-09-15 19:43:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:30,778 INFO L225 Difference]: With dead ends: 157 [2024-09-15 19:43:30,778 INFO L226 Difference]: Without dead ends: 101 [2024-09-15 19:43:30,779 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 159 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2024-09-15 19:43:30,780 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 78 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:30,780 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 508 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 19:43:30,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-15 19:43:30,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-09-15 19:43:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 72 states have internal predecessors, (75), 14 states have call successors, (14), 10 states have call predecessors, (14), 14 states have return successors, (34), 14 states have call predecessors, (34), 13 states have call successors, (34) [2024-09-15 19:43:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 123 transitions. [2024-09-15 19:43:30,796 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 123 transitions. Word has length 77 [2024-09-15 19:43:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:30,796 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 123 transitions. [2024-09-15 19:43:30,796 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.0) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (18), 2 states have call predecessors, (18), 7 states have return successors, (20), 7 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-15 19:43:30,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 123 transitions. [2024-09-15 19:43:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-15 19:43:30,798 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:30,798 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:30,815 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-15 19:43:31,002 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-15 19:43:31,003 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:31,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:31,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1768804806, now seen corresponding path program 1 times [2024-09-15 19:43:31,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:31,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428651180] [2024-09-15 19:43:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:31,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:43:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 19:43:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 19:43:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-15 19:43:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-15 19:43:31,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:31,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428651180] [2024-09-15 19:43:31,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428651180] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:43:31,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:43:31,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 19:43:31,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9625709] [2024-09-15 19:43:31,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:43:31,155 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:43:31,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:31,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:43:31,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:43:31,157 INFO L87 Difference]: Start difference. First operand 97 states and 123 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 19:43:31,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:31,209 INFO L93 Difference]: Finished difference Result 185 states and 257 transitions. [2024-09-15 19:43:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:43:31,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 84 [2024-09-15 19:43:31,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:31,213 INFO L225 Difference]: With dead ends: 185 [2024-09-15 19:43:31,213 INFO L226 Difference]: Without dead ends: 97 [2024-09-15 19:43:31,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-15 19:43:31,214 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:31,215 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 186 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:43:31,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-15 19:43:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-09-15 19:43:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 72 states have internal predecessors, (75), 14 states have call successors, (14), 10 states have call predecessors, (14), 14 states have return successors, (32), 14 states have call predecessors, (32), 13 states have call successors, (32) [2024-09-15 19:43:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2024-09-15 19:43:31,230 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 84 [2024-09-15 19:43:31,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:31,231 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2024-09-15 19:43:31,231 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 19:43:31,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2024-09-15 19:43:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-15 19:43:31,232 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:31,232 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:31,233 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-15 19:43:31,233 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:31,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:31,233 INFO L85 PathProgramCache]: Analyzing trace with hash -802082800, now seen corresponding path program 2 times [2024-09-15 19:43:31,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:31,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005970958] [2024-09-15 19:43:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:31,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 19:43:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 19:43:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:43:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 19:43:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 19:43:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-15 19:43:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-15 19:43:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005970958] [2024-09-15 19:43:31,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005970958] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:43:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358198270] [2024-09-15 19:43:31,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:43:31,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:43:31,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:43:31,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:43:31,676 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 19:43:31,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:43:31,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:43:31,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-15 19:43:31,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:43:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-15 19:43:31,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:43:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-15 19:43:33,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358198270] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:43:33,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:43:33,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 25 [2024-09-15 19:43:33,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548403684] [2024-09-15 19:43:33,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:43:33,908 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 19:43:33,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:33,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 19:43:33,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2024-09-15 19:43:33,909 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 25 states, 24 states have (on average 5.208333333333333) internal successors, (125), 25 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (25), 7 states have call predecessors, (25), 15 states have call successors, (25) [2024-09-15 19:43:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:34,143 INFO L93 Difference]: Finished difference Result 158 states and 212 transitions. [2024-09-15 19:43:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-15 19:43:34,144 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.208333333333333) internal successors, (125), 25 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (25), 7 states have call predecessors, (25), 15 states have call successors, (25) Word has length 93 [2024-09-15 19:43:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:34,145 INFO L225 Difference]: With dead ends: 158 [2024-09-15 19:43:34,145 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 19:43:34,146 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2024-09-15 19:43:34,146 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:34,146 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 243 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:43:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 19:43:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 19:43:34,147 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) [2024-09-15 19:43:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 19:43:34,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2024-09-15 19:43:34,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:34,148 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 19:43:34,148 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.208333333333333) internal successors, (125), 25 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (25), 7 states have call predecessors, (25), 15 states have call successors, (25) [2024-09-15 19:43:34,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 19:43:34,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 19:43:34,151 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-15 19:43:34,167 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-15 19:43:34,351 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-15 19:43:34,354 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:34,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-15 19:43:36,007 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 19:43:36,032 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-15 19:43:36,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:43:36 BoogieIcfgContainer [2024-09-15 19:43:36,034 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 19:43:36,035 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-15 19:43:36,035 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-15 19:43:36,035 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-15 19:43:36,036 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:43:22" (3/4) ... [2024-09-15 19:43:36,037 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-15 19:43:36,040 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure multiple_of [2024-09-15 19:43:36,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-15 19:43:36,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure mult [2024-09-15 19:43:36,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_prime_ [2024-09-15 19:43:36,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-15 19:43:36,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_prime [2024-09-15 19:43:36,046 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-09-15 19:43:36,046 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-09-15 19:43:36,046 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-15 19:43:36,047 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-15 19:43:36,140 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-15 19:43:36,141 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-15 19:43:36,141 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-15 19:43:36,141 INFO L158 Benchmark]: Toolchain (without parser) took 14743.12ms. Allocated memory was 62.9MB in the beginning and 199.2MB in the end (delta: 136.3MB). Free memory was 29.1MB in the beginning and 88.2MB in the end (delta: -59.1MB). Peak memory consumption was 77.0MB. Max. memory is 16.1GB. [2024-09-15 19:43:36,142 INFO L158 Benchmark]: CDTParser took 1.51ms. Allocated memory is still 48.2MB. Free memory was 29.6MB in the beginning and 29.5MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:43:36,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.34ms. Allocated memory is still 62.9MB. Free memory was 28.9MB in the beginning and 33.1MB in the end (delta: -4.1MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2024-09-15 19:43:36,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.33ms. Allocated memory is still 62.9MB. Free memory was 33.1MB in the beginning and 32.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 19:43:36,142 INFO L158 Benchmark]: Boogie Preprocessor took 53.20ms. Allocated memory is still 62.9MB. Free memory was 32.1MB in the beginning and 30.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 19:43:36,142 INFO L158 Benchmark]: RCFGBuilder took 496.51ms. Allocated memory is still 62.9MB. Free memory was 30.2MB in the beginning and 33.1MB in the end (delta: -2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-15 19:43:36,143 INFO L158 Benchmark]: TraceAbstraction took 13786.88ms. Allocated memory was 62.9MB in the beginning and 199.2MB in the end (delta: 136.3MB). Free memory was 32.5MB in the beginning and 94.5MB in the end (delta: -62.1MB). Peak memory consumption was 91.7MB. Max. memory is 16.1GB. [2024-09-15 19:43:36,143 INFO L158 Benchmark]: Witness Printer took 105.83ms. Allocated memory is still 199.2MB. Free memory was 94.5MB in the beginning and 88.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-15 19:43:36,144 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.51ms. Allocated memory is still 48.2MB. Free memory was 29.6MB in the beginning and 29.5MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.34ms. Allocated memory is still 62.9MB. Free memory was 28.9MB in the beginning and 33.1MB in the end (delta: -4.1MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.33ms. Allocated memory is still 62.9MB. Free memory was 33.1MB in the beginning and 32.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.20ms. Allocated memory is still 62.9MB. Free memory was 32.1MB in the beginning and 30.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 496.51ms. Allocated memory is still 62.9MB. Free memory was 30.2MB in the beginning and 33.1MB in the end (delta: -2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13786.88ms. Allocated memory was 62.9MB in the beginning and 199.2MB in the end (delta: 136.3MB). Free memory was 32.5MB in the beginning and 94.5MB in the end (delta: -62.1MB). Peak memory consumption was 91.7MB. Max. memory is 16.1GB. * Witness Printer took 105.83ms. Allocated memory is still 199.2MB. Free memory was 94.5MB in the beginning and 88.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.0s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 328 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 4316 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3584 mSDsCounter, 161 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1777 IncrementalHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 161 mSolverCounterUnsat, 732 mSDtfsCounter, 1777 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 982 GetRequests, 805 SyntacticMatches, 19 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=11, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 24 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 1034 NumberOfCodeBlocks, 1034 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1323 ConstructedInterpolants, 0 QuantifiedInterpolants, 3220 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 287/540 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 31]: Procedure Contract for multiple_of Derived contract for procedure multiple_of. Ensures: (((((((long long) \old(m) * 2) < ((long long) \old(n) + 1)) || (\old(n) == \old(m))) || (\old(n) == 0)) || (((long long) \old(n) + \old(m)) < 1)) || (\old(m) < 1)) - ProcedureContractResult [Line: 17]: Procedure Contract for mult Derived contract for procedure mult. Ensures: ((((2 < \result) || (\result == 0)) || (\old(m) < 2)) || (\old(n) < 2)) - ProcedureContractResult [Line: 52]: Procedure Contract for is_prime Derived contract for procedure is_prime. Ensures: ((\old(n) < 3) || (\result == 0)) RESULT: Ultimate proved your program to be correct! [2024-09-15 19:43:36,171 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE