./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.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 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/MultCommutative-2.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 ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:04:51,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:04:51,422 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:04:51,426 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:04:51,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:04:51,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:04:51,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:04:51,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:04:51,460 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:04:51,461 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:04:51,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:04:51,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:04:51,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:04:51,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:04:51,463 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:04:51,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:04:51,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:04:51,464 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:04:51,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:04:51,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:04:51,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:04:51,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:04:51,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:04:51,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:04:51,467 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:04:51,467 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:04:51,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:04:51,468 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:04:51,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:04:51,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:04:51,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:04:51,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:04:51,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:04:51,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:04:51,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:04:51,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:04:51,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:04:51,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:04:51,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:04:51,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:04:51,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:04:51,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:04:51,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:04:51,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:04:51,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:04:51,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:04:51,757 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:04:51,757 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:04:51,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/MultCommutative-2.c [2024-09-25 00:04:53,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:04:53,458 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:04:53,458 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/MultCommutative-2.c [2024-09-25 00:04:53,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/145b33aca/47a5fc49342d4c1f97895298fb5f1217/FLAG7a5ebb8b0 [2024-09-25 00:04:53,486 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/145b33aca/47a5fc49342d4c1f97895298fb5f1217 [2024-09-25 00:04:53,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:04:53,491 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:04:53,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:04:53,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:04:53,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:04:53,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165ae548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53, skipping insertion in model container [2024-09-25 00:04:53,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:04:53,703 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/MultCommutative-2.c[970,983] [2024-09-25 00:04:53,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:04:53,723 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:04:53,741 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/MultCommutative-2.c[970,983] [2024-09-25 00:04:53,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:04:53,761 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:04:53,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53 WrapperNode [2024-09-25 00:04:53,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:04:53,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:04:53,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:04:53,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:04:53,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,784 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:04:53,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:04:53,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:04:53,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:04:53,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:04:53,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,821 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]. [2024-09-25 00:04:53,828 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:04:53,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:04:53,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:04:53,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:04:53,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (1/1) ... [2024-09-25 00:04:53,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:04:53,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:53,879 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) [2024-09-25 00:04:53,883 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 [2024-09-25 00:04:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:04:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:04:53,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:04:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2024-09-25 00:04:53,962 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2024-09-25 00:04:53,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:04:53,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:04:53,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:04:53,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:04:53,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:04:54,045 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:04:54,047 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:04:54,183 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-25 00:04:54,183 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:04:54,210 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:04:54,211 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 00:04:54,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:54 BoogieIcfgContainer [2024-09-25 00:04:54,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:04:54,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:04:54,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:04:54,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:04:54,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:04:53" (1/3) ... [2024-09-25 00:04:54,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b7d8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:54, skipping insertion in model container [2024-09-25 00:04:54,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:53" (2/3) ... [2024-09-25 00:04:54,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b7d8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:54, skipping insertion in model container [2024-09-25 00:04:54,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:54" (3/3) ... [2024-09-25 00:04:54,224 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2024-09-25 00:04:54,242 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:04:54,242 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:04:54,301 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:04:54,308 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;@60049b36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:04:54,309 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:04:54,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:04:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-25 00:04:54,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:54,323 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:54,323 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:54,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:54,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1859846447, now seen corresponding path program 1 times [2024-09-25 00:04:54,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:54,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045895827] [2024-09-25 00:04:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:54,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-25 00:04:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-25 00:04:54,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:54,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045895827] [2024-09-25 00:04:54,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045895827] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:04:54,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:04:54,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-25 00:04:54,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668918028] [2024-09-25 00:04:54,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:04:54,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 00:04:54,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 00:04:54,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-25 00:04:54,824 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:04:54,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:54,931 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2024-09-25 00:04:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 00:04:54,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-25 00:04:54,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:54,943 INFO L225 Difference]: With dead ends: 41 [2024-09-25 00:04:54,944 INFO L226 Difference]: Without dead ends: 29 [2024-09-25 00:04:54,947 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-25 00:04:54,953 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:54,955 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 164 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:04:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-25 00:04:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-25 00:04:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-25 00:04:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-09-25 00:04:54,989 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 23 [2024-09-25 00:04:54,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:54,989 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-09-25 00:04:54,990 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:04:54,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:54,990 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-09-25 00:04:54,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-25 00:04:54,992 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:54,993 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:54,993 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:04:54,993 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:54,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:54,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1394897481, now seen corresponding path program 1 times [2024-09-25 00:04:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:54,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113295237] [2024-09-25 00:04:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:54,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:55,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:55,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:55,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-25 00:04:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:55,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:04:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:04:55,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:55,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113295237] [2024-09-25 00:04:55,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113295237] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:55,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294384712] [2024-09-25 00:04:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:55,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:55,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:55,260 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) [2024-09-25 00:04:55,262 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:04:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:55,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-25 00:04:55,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:04:55,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:04:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294384712] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:55,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:55,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2024-09-25 00:04:55,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429295099] [2024-09-25 00:04:55,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:55,528 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-25 00:04:55,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:55,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-25 00:04:55,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-09-25 00:04:55,532 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-25 00:04:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:55,768 INFO L93 Difference]: Finished difference Result 55 states and 86 transitions. [2024-09-25 00:04:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 00:04:55,769 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 29 [2024-09-25 00:04:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:55,770 INFO L225 Difference]: With dead ends: 55 [2024-09-25 00:04:55,770 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 00:04:55,771 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-25 00:04:55,772 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:55,773 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 163 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 00:04:55,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-25 00:04:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-25 00:04:55,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-09-25 00:04:55,789 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 29 [2024-09-25 00:04:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:55,789 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-09-25 00:04:55,790 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-25 00:04:55,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-09-25 00:04:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-25 00:04:55,792 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:55,792 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:55,811 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:55,992 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:55,993 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:55,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:55,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1508818693, now seen corresponding path program 1 times [2024-09-25 00:04:55,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:55,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317096542] [2024-09-25 00:04:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:55,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 00:04:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 00:04:56,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:56,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317096542] [2024-09-25 00:04:56,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317096542] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:04:56,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:04:56,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:04:56,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122110687] [2024-09-25 00:04:56,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:04:56,129 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:04:56,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:56,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:04:56,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:04:56,130 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-09-25 00:04:56,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:56,192 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-09-25 00:04:56,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 00:04:56,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 [2024-09-25 00:04:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:56,195 INFO L225 Difference]: With dead ends: 34 [2024-09-25 00:04:56,197 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 00:04:56,197 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 00:04:56,198 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:56,200 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:04:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 00:04:56,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-25 00:04:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-25 00:04:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-09-25 00:04:56,213 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 30 [2024-09-25 00:04:56,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:56,214 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-09-25 00:04:56,214 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-09-25 00:04:56,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:56,214 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-09-25 00:04:56,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-25 00:04:56,218 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:56,218 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:56,218 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-25 00:04:56,218 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:56,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1681162323, now seen corresponding path program 1 times [2024-09-25 00:04:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:56,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214147333] [2024-09-25 00:04:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 00:04:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:04:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 00:04:56,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:56,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214147333] [2024-09-25 00:04:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214147333] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:56,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478576854] [2024-09-25 00:04:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:56,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:56,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:56,427 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) [2024-09-25 00:04:56,429 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:04:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:56,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 00:04:56,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-25 00:04:56,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-09-25 00:04:56,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478576854] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:56,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:56,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-09-25 00:04:56,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489932782] [2024-09-25 00:04:56,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:56,767 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-25 00:04:56,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-25 00:04:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-09-25 00:04:56,771 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-25 00:04:56,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:56,869 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-09-25 00:04:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 00:04:56,869 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) Word has length 50 [2024-09-25 00:04:56,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:56,870 INFO L225 Difference]: With dead ends: 49 [2024-09-25 00:04:56,871 INFO L226 Difference]: Without dead ends: 23 [2024-09-25 00:04:56,871 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-25 00:04:56,874 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 10 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:56,874 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 111 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-25 00:04:56,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-25 00:04:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-25 00:04:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-09-25 00:04:56,881 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 50 [2024-09-25 00:04:56,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:56,882 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-09-25 00:04:56,882 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-25 00:04:56,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:56,883 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-09-25 00:04:56,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-25 00:04:56,884 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:56,884 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:56,899 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 00:04:57,084 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:57,085 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:57,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:57,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1570908093, now seen corresponding path program 2 times [2024-09-25 00:04:57,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:57,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406904936] [2024-09-25 00:04:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:57,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:57,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:57,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:57,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:57,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 00:04:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:57,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 00:04:57,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:57,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406904936] [2024-09-25 00:04:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406904936] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:57,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925795867] [2024-09-25 00:04:57,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:04:57,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:57,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:57,702 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) [2024-09-25 00:04:57,704 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:04:57,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:04:57,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:57,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-25 00:04:57,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:04:58,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:04:59,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925795867] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:59,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:59,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2024-09-25 00:04:59,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923733525] [2024-09-25 00:04:59,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:59,026 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-25 00:04:59,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-25 00:04:59,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 00:04:59,028 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 40 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (10), 1 states have call predecessors, (10), 11 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-25 00:04:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:59,304 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-25 00:04:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 00:04:59,304 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (10), 1 states have call predecessors, (10), 11 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) Word has length 37 [2024-09-25 00:04:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:59,305 INFO L225 Difference]: With dead ends: 34 [2024-09-25 00:04:59,306 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 00:04:59,307 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=213, Invalid=1767, Unknown=0, NotChecked=0, Total=1980 [2024-09-25 00:04:59,307 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:59,308 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 186 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:04:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 00:04:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-25 00:04:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-25 00:04:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-09-25 00:04:59,318 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 37 [2024-09-25 00:04:59,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:59,319 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-09-25 00:04:59,319 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (10), 1 states have call predecessors, (10), 11 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-25 00:04:59,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-09-25 00:04:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-25 00:04:59,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:59,322 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:59,361 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 00:04:59,556 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:59,557 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:59,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:59,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1355077807, now seen corresponding path program 3 times [2024-09-25 00:04:59,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:59,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013389097] [2024-09-25 00:04:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:59,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 00:04:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:59,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:00,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-25 00:05:00,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:00,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013389097] [2024-09-25 00:05:00,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013389097] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:00,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448135570] [2024-09-25 00:05:00,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:05:00,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:00,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:00,137 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) [2024-09-25 00:05:00,138 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:05:00,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-25 00:05:00,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:00,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-25 00:05:00,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-25 00:05:00,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-25 00:05:01,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448135570] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:01,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:01,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 18] total 39 [2024-09-25 00:05:01,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438709209] [2024-09-25 00:05:01,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:01,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-25 00:05:01,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:01,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-25 00:05:01,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1366, Unknown=0, NotChecked=0, Total=1482 [2024-09-25 00:05:01,258 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 39 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 8 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (15), 15 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-25 00:05:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:02,119 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-09-25 00:05:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-25 00:05:02,120 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 8 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (15), 15 states have call predecessors, (15), 8 states have call successors, (15) Word has length 44 [2024-09-25 00:05:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:02,121 INFO L225 Difference]: With dead ends: 48 [2024-09-25 00:05:02,121 INFO L226 Difference]: Without dead ends: 40 [2024-09-25 00:05:02,123 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=326, Invalid=2866, Unknown=0, NotChecked=0, Total=3192 [2024-09-25 00:05:02,127 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:02,127 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 282 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 00:05:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-25 00:05:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-09-25 00:05:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-09-25 00:05:02,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-09-25 00:05:02,148 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 44 [2024-09-25 00:05:02,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:02,148 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-09-25 00:05:02,149 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 8 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (15), 15 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-25 00:05:02,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-09-25 00:05:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-25 00:05:02,150 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:02,150 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:02,171 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 00:05:02,357 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:02,358 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:02,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:02,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1628773349, now seen corresponding path program 4 times [2024-09-25 00:05:02,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:02,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918072844] [2024-09-25 00:05:02,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:02,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:05:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-25 00:05:02,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:02,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918072844] [2024-09-25 00:05:02,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918072844] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:02,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489149279] [2024-09-25 00:05:02,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:05:02,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:02,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:02,870 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) [2024-09-25 00:05:02,871 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 00:05:02,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:05:02,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:02,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-25 00:05:02,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-25 00:05:03,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 00:05:04,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489149279] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:04,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:04,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 20] total 46 [2024-09-25 00:05:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281685367] [2024-09-25 00:05:04,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:04,200 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-25 00:05:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-25 00:05:04,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 00:05:04,203 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 46 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 31 states have internal predecessors, (65), 9 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (16), 16 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-25 00:05:05,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:05,003 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2024-09-25 00:05:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-25 00:05:05,005 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 31 states have internal predecessors, (65), 9 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (16), 16 states have call predecessors, (16), 9 states have call successors, (16) Word has length 44 [2024-09-25 00:05:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:05,006 INFO L225 Difference]: With dead ends: 52 [2024-09-25 00:05:05,006 INFO L226 Difference]: Without dead ends: 44 [2024-09-25 00:05:05,007 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=421, Invalid=3485, Unknown=0, NotChecked=0, Total=3906 [2024-09-25 00:05:05,008 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:05,012 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 267 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 00:05:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-25 00:05:05,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-09-25 00:05:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-25 00:05:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-09-25 00:05:05,025 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 44 [2024-09-25 00:05:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:05,025 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-09-25 00:05:05,026 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 31 states have internal predecessors, (65), 9 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (16), 16 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-25 00:05:05,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-09-25 00:05:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-25 00:05:05,027 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:05,027 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:05,045 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:05,231 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-25 00:05:05,232 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:05,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1170996589, now seen corresponding path program 5 times [2024-09-25 00:05:05,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:05,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056391371] [2024-09-25 00:05:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:05,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:05,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:05,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:05,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:05,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 00:05:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:05,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:05,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:05,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-25 00:05:05,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056391371] [2024-09-25 00:05:05,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056391371] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888654145] [2024-09-25 00:05:05,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:05:05,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:05,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:05,833 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) [2024-09-25 00:05:05,835 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 00:05:05,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-25 00:05:05,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:05,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-25 00:05:05,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-25 00:05:06,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:05:07,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888654145] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:07,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:07,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 23] total 54 [2024-09-25 00:05:07,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956889736] [2024-09-25 00:05:07,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:07,666 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-25 00:05:07,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:07,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-25 00:05:07,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2670, Unknown=0, NotChecked=0, Total=2862 [2024-09-25 00:05:07,668 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 54 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 36 states have internal predecessors, (75), 10 states have call successors, (12), 1 states have call predecessors, (12), 17 states have return successors, (19), 19 states have call predecessors, (19), 10 states have call successors, (19) [2024-09-25 00:05:08,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:08,813 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2024-09-25 00:05:08,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-25 00:05:08,815 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 36 states have internal predecessors, (75), 10 states have call successors, (12), 1 states have call predecessors, (12), 17 states have return successors, (19), 19 states have call predecessors, (19), 10 states have call successors, (19) Word has length 51 [2024-09-25 00:05:08,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:08,817 INFO L225 Difference]: With dead ends: 71 [2024-09-25 00:05:08,817 INFO L226 Difference]: Without dead ends: 65 [2024-09-25 00:05:08,819 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=523, Invalid=5027, Unknown=0, NotChecked=0, Total=5550 [2024-09-25 00:05:08,820 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 53 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:08,820 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 372 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 00:05:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-25 00:05:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2024-09-25 00:05:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (27), 13 states have call predecessors, (27), 10 states have call successors, (27) [2024-09-25 00:05:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2024-09-25 00:05:08,839 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 51 [2024-09-25 00:05:08,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:08,839 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2024-09-25 00:05:08,839 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 36 states have internal predecessors, (75), 10 states have call successors, (12), 1 states have call predecessors, (12), 17 states have return successors, (19), 19 states have call predecessors, (19), 10 states have call successors, (19) [2024-09-25 00:05:08,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:08,840 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2024-09-25 00:05:08,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-25 00:05:08,841 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:08,841 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:08,859 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 00:05:09,042 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:09,043 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:09,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:09,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1806313405, now seen corresponding path program 6 times [2024-09-25 00:05:09,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:09,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211911236] [2024-09-25 00:05:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:09,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-25 00:05:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:10,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-25 00:05:10,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:10,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211911236] [2024-09-25 00:05:10,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211911236] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:10,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989987931] [2024-09-25 00:05:10,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:05:10,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:10,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:10,153 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:05:10,154 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 00:05:10,219 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-25 00:05:10,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:10,224 WARN L260 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-09-25 00:05:10,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-25 00:05:10,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 29 proven. 153 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 00:05:12,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989987931] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:12,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:12,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 30] total 61 [2024-09-25 00:05:12,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360022249] [2024-09-25 00:05:12,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:12,446 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-25 00:05:12,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:12,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-25 00:05:12,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3432, Unknown=0, NotChecked=0, Total=3660 [2024-09-25 00:05:12,449 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 61 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (15), 1 states have call predecessors, (15), 18 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2024-09-25 00:05:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:13,788 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2024-09-25 00:05:13,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-25 00:05:13,788 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (15), 1 states have call predecessors, (15), 18 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) Word has length 72 [2024-09-25 00:05:13,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:13,790 INFO L225 Difference]: With dead ends: 81 [2024-09-25 00:05:13,790 INFO L226 Difference]: Without dead ends: 71 [2024-09-25 00:05:13,793 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=638, Invalid=6502, Unknown=0, NotChecked=0, Total=7140 [2024-09-25 00:05:13,793 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:13,794 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 504 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-25 00:05:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-25 00:05:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2024-09-25 00:05:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (26), 13 states have call predecessors, (26), 9 states have call successors, (26) [2024-09-25 00:05:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-09-25 00:05:13,833 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 72 [2024-09-25 00:05:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:13,834 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-09-25 00:05:13,834 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (15), 1 states have call predecessors, (15), 18 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2024-09-25 00:05:13,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-09-25 00:05:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-25 00:05:13,838 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:13,838 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:13,856 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:14,042 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:14,043 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:14,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:14,043 INFO L85 PathProgramCache]: Analyzing trace with hash 240502641, now seen corresponding path program 7 times [2024-09-25 00:05:14,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:14,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206167438] [2024-09-25 00:05:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:14,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:05:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:15,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:15,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:15,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:15,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-09-25 00:05:15,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:15,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206167438] [2024-09-25 00:05:15,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206167438] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:15,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042329152] [2024-09-25 00:05:15,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:05:15,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:15,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:15,443 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:05:15,444 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 00:05:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:15,529 WARN L260 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-25 00:05:15,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 5 proven. 163 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-09-25 00:05:16,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 38 proven. 250 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-25 00:05:18,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042329152] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:18,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:18,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 36] total 72 [2024-09-25 00:05:18,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344931110] [2024-09-25 00:05:18,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:18,314 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-25 00:05:18,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-25 00:05:18,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=4838, Unknown=0, NotChecked=0, Total=5112 [2024-09-25 00:05:18,318 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 72 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 44 states have internal predecessors, (97), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (30), 29 states have call predecessors, (30), 15 states have call successors, (30) [2024-09-25 00:05:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:20,306 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2024-09-25 00:05:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-25 00:05:20,307 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 44 states have internal predecessors, (97), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (30), 29 states have call predecessors, (30), 15 states have call successors, (30) Word has length 86 [2024-09-25 00:05:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:20,308 INFO L225 Difference]: With dead ends: 87 [2024-09-25 00:05:20,308 INFO L226 Difference]: Without dead ends: 74 [2024-09-25 00:05:20,311 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=813, Invalid=9287, Unknown=0, NotChecked=0, Total=10100 [2024-09-25 00:05:20,312 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 72 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:20,312 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 733 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-25 00:05:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-25 00:05:20,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2024-09-25 00:05:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 42 states have internal predecessors, (45), 10 states have call successors, (10), 6 states have call predecessors, (10), 11 states have return successors, (29), 14 states have call predecessors, (29), 9 states have call successors, (29) [2024-09-25 00:05:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2024-09-25 00:05:20,331 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 86 [2024-09-25 00:05:20,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:20,332 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2024-09-25 00:05:20,332 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 44 states have internal predecessors, (97), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (30), 29 states have call predecessors, (30), 15 states have call successors, (30) [2024-09-25 00:05:20,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2024-09-25 00:05:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-25 00:05:20,333 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:20,333 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:20,347 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:20,534 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:20,535 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:20,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash -879054875, now seen corresponding path program 8 times [2024-09-25 00:05:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:20,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724850238] [2024-09-25 00:05:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:20,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:20,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:20,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:20,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:05:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 28 proven. 146 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-09-25 00:05:21,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724850238] [2024-09-25 00:05:21,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724850238] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:21,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82437197] [2024-09-25 00:05:21,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:05:21,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:21,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:21,822 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:05:21,824 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 00:05:21,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:05:21,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:21,901 WARN L260 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-25 00:05:21,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 6 proven. 136 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-09-25 00:05:22,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-25 00:05:24,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82437197] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:24,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:24,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 33] total 68 [2024-09-25 00:05:24,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013955987] [2024-09-25 00:05:24,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:24,225 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-25 00:05:24,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:24,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-25 00:05:24,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4308, Unknown=0, NotChecked=0, Total=4556 [2024-09-25 00:05:24,228 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 68 states, 64 states have (on average 1.421875) internal successors, (91), 41 states have internal predecessors, (91), 14 states have call successors, (16), 1 states have call predecessors, (16), 20 states have return successors, (29), 28 states have call predecessors, (29), 14 states have call successors, (29) [2024-09-25 00:05:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:25,692 INFO L93 Difference]: Finished difference Result 84 states and 117 transitions. [2024-09-25 00:05:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-25 00:05:25,693 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 64 states have (on average 1.421875) internal successors, (91), 41 states have internal predecessors, (91), 14 states have call successors, (16), 1 states have call predecessors, (16), 20 states have return successors, (29), 28 states have call predecessors, (29), 14 states have call successors, (29) Word has length 79 [2024-09-25 00:05:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:25,694 INFO L225 Difference]: With dead ends: 84 [2024-09-25 00:05:25,694 INFO L226 Difference]: Without dead ends: 77 [2024-09-25 00:05:25,696 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=655, Invalid=7901, Unknown=0, NotChecked=0, Total=8556 [2024-09-25 00:05:25,696 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 61 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:25,696 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 725 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2042 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-25 00:05:25,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-25 00:05:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2024-09-25 00:05:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 44 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 12 states have return successors, (32), 15 states have call predecessors, (32), 9 states have call successors, (32) [2024-09-25 00:05:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 89 transitions. [2024-09-25 00:05:25,717 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 89 transitions. Word has length 79 [2024-09-25 00:05:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:25,717 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 89 transitions. [2024-09-25 00:05:25,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 64 states have (on average 1.421875) internal successors, (91), 41 states have internal predecessors, (91), 14 states have call successors, (16), 1 states have call predecessors, (16), 20 states have return successors, (29), 28 states have call predecessors, (29), 14 states have call successors, (29) [2024-09-25 00:05:25,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 89 transitions. [2024-09-25 00:05:25,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-25 00:05:25,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:25,719 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:25,732 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 00:05:25,920 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-25 00:05:25,920 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:25,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1998053917, now seen corresponding path program 9 times [2024-09-25 00:05:25,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:25,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91440757] [2024-09-25 00:05:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:25,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:26,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:26,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:26,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:26,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:26,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:05:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:26,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:26,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:26,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:27,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:27,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:27,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:27,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-09-25 00:05:27,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:27,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91440757] [2024-09-25 00:05:27,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91440757] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:27,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628603729] [2024-09-25 00:05:27,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:05:27,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:27,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:27,338 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:05:27,340 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 00:05:27,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-09-25 00:05:27,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:27,411 WARN L260 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-25 00:05:27,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 7 proven. 167 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-09-25 00:05:28,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-25 00:05:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628603729] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:30,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:30,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 36] total 74 [2024-09-25 00:05:30,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227365432] [2024-09-25 00:05:30,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:30,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-25 00:05:30,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:30,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-25 00:05:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=5132, Unknown=0, NotChecked=0, Total=5402 [2024-09-25 00:05:30,210 INFO L87 Difference]: Start difference. First operand 66 states and 89 transitions. Second operand has 74 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 44 states have internal predecessors, (99), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (32), 31 states have call predecessors, (32), 15 states have call successors, (32) [2024-09-25 00:05:31,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:31,600 INFO L93 Difference]: Finished difference Result 87 states and 122 transitions. [2024-09-25 00:05:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-25 00:05:31,600 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 44 states have internal predecessors, (99), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (32), 31 states have call predecessors, (32), 15 states have call successors, (32) Word has length 86 [2024-09-25 00:05:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:31,602 INFO L225 Difference]: With dead ends: 87 [2024-09-25 00:05:31,602 INFO L226 Difference]: Without dead ends: 80 [2024-09-25 00:05:31,604 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2129 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=736, Invalid=9364, Unknown=0, NotChecked=0, Total=10100 [2024-09-25 00:05:31,604 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 95 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:31,604 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 582 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-25 00:05:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-25 00:05:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2024-09-25 00:05:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 46 states have internal predecessors, (49), 10 states have call successors, (10), 6 states have call predecessors, (10), 13 states have return successors, (35), 16 states have call predecessors, (35), 9 states have call successors, (35) [2024-09-25 00:05:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2024-09-25 00:05:31,625 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 86 [2024-09-25 00:05:31,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:31,626 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2024-09-25 00:05:31,626 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 44 states have internal predecessors, (99), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (32), 31 states have call predecessors, (32), 15 states have call successors, (32) [2024-09-25 00:05:31,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:31,627 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2024-09-25 00:05:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-25 00:05:31,628 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:31,628 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:31,642 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:31,831 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-25 00:05:31,832 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:31,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1103674431, now seen corresponding path program 10 times [2024-09-25 00:05:31,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:31,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064869896] [2024-09-25 00:05:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:31,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 00:05:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 26 proven. 148 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-09-25 00:05:32,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:32,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064869896] [2024-09-25 00:05:32,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064869896] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:32,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866930902] [2024-09-25 00:05:32,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:05:32,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:32,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:32,865 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:05:32,866 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 00:05:32,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:05:32,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:32,934 WARN L260 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-25 00:05:32,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 3 proven. 136 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-09-25 00:05:33,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-25 00:05:35,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866930902] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:35,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:35,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 33] total 69 [2024-09-25 00:05:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827090202] [2024-09-25 00:05:35,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:35,213 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-25 00:05:35,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:35,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-25 00:05:35,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4429, Unknown=0, NotChecked=0, Total=4692 [2024-09-25 00:05:35,215 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. Second operand has 69 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 43 states have internal predecessors, (92), 14 states have call successors, (16), 1 states have call predecessors, (16), 22 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2024-09-25 00:05:36,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:36,560 INFO L93 Difference]: Finished difference Result 91 states and 127 transitions. [2024-09-25 00:05:36,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-25 00:05:36,560 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 43 states have internal predecessors, (92), 14 states have call successors, (16), 1 states have call predecessors, (16), 22 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) Word has length 79 [2024-09-25 00:05:36,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:36,561 INFO L225 Difference]: With dead ends: 91 [2024-09-25 00:05:36,561 INFO L226 Difference]: Without dead ends: 78 [2024-09-25 00:05:36,563 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=757, Invalid=8173, Unknown=0, NotChecked=0, Total=8930 [2024-09-25 00:05:36,563 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 55 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:36,563 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 559 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-25 00:05:36,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-25 00:05:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-09-25 00:05:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 46 states have internal predecessors, (49), 10 states have call successors, (10), 6 states have call predecessors, (10), 13 states have return successors, (34), 16 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-25 00:05:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2024-09-25 00:05:36,582 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 79 [2024-09-25 00:05:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:36,582 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2024-09-25 00:05:36,583 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 43 states have internal predecessors, (92), 14 states have call successors, (16), 1 states have call predecessors, (16), 22 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2024-09-25 00:05:36,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2024-09-25 00:05:36,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-25 00:05:36,584 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:36,584 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:36,603 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:36,785 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:36,785 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:36,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:36,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1404959985, now seen corresponding path program 11 times [2024-09-25 00:05:36,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:36,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525527179] [2024-09-25 00:05:36,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:36,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:37,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:37,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:37,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:37,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:37,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:05:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:37,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:37,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:37,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:37,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:38,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:38,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:38,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:38,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 213 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-09-25 00:05:38,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:38,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525527179] [2024-09-25 00:05:38,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525527179] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:38,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813058524] [2024-09-25 00:05:38,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:05:38,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:38,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:05:38,406 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 00:05:38,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-09-25 00:05:38,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:38,485 WARN L260 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-09-25 00:05:38,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 17 proven. 193 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-09-25 00:05:39,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 315 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-25 00:05:41,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813058524] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:41,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:41,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26, 39] total 80 [2024-09-25 00:05:41,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245696262] [2024-09-25 00:05:41,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:41,696 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-25 00:05:41,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:41,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-25 00:05:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=6028, Unknown=0, NotChecked=0, Total=6320 [2024-09-25 00:05:41,698 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 80 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 47 states have internal predecessors, (110), 16 states have call successors, (18), 1 states have call predecessors, (18), 24 states have return successors, (35), 34 states have call predecessors, (35), 16 states have call successors, (35) [2024-09-25 00:05:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:43,565 INFO L93 Difference]: Finished difference Result 88 states and 124 transitions. [2024-09-25 00:05:43,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-25 00:05:43,566 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 47 states have internal predecessors, (110), 16 states have call successors, (18), 1 states have call predecessors, (18), 24 states have return successors, (35), 34 states have call predecessors, (35), 16 states have call successors, (35) Word has length 93 [2024-09-25 00:05:43,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:43,567 INFO L225 Difference]: With dead ends: 88 [2024-09-25 00:05:43,567 INFO L226 Difference]: Without dead ends: 81 [2024-09-25 00:05:43,569 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=817, Invalid=10739, Unknown=0, NotChecked=0, Total=11556 [2024-09-25 00:05:43,569 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 124 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:43,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 859 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-25 00:05:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-25 00:05:43,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2024-09-25 00:05:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 10 states have call successors, (10), 6 states have call predecessors, (10), 14 states have return successors, (37), 17 states have call predecessors, (37), 9 states have call successors, (37) [2024-09-25 00:05:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2024-09-25 00:05:43,595 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 93 [2024-09-25 00:05:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:43,596 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2024-09-25 00:05:43,596 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 47 states have internal predecessors, (110), 16 states have call successors, (18), 1 states have call predecessors, (18), 24 states have return successors, (35), 34 states have call predecessors, (35), 16 states have call successors, (35) [2024-09-25 00:05:43,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2024-09-25 00:05:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-25 00:05:43,597 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:43,598 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:43,614 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:43,798 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-25 00:05:43,798 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:43,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash -307076237, now seen corresponding path program 12 times [2024-09-25 00:05:43,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:43,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011313714] [2024-09-25 00:05:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:43,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:44,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:44,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:44,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:44,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:44,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:05:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:44,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:44,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:44,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:44,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 40 proven. 251 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-09-25 00:05:45,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:45,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011313714] [2024-09-25 00:05:45,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011313714] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:45,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435138657] [2024-09-25 00:05:45,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:05:45,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:45,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:45,440 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:05:45,441 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 00:05:45,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-25 00:05:45,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:45,531 WARN L260 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 157 conjuncts are in the unsatisfiable core [2024-09-25 00:05:45,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 19 proven. 229 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-09-25 00:05:46,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 39 proven. 380 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-25 00:05:49,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435138657] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:49,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:49,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28, 42] total 86 [2024-09-25 00:05:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792832515] [2024-09-25 00:05:49,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:49,385 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-25 00:05:49,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:49,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-25 00:05:49,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=6996, Unknown=0, NotChecked=0, Total=7310 [2024-09-25 00:05:49,388 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand has 86 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 50 states have internal predecessors, (118), 17 states have call successors, (19), 1 states have call predecessors, (19), 26 states have return successors, (38), 37 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-25 00:05:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:51,379 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-09-25 00:05:51,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-25 00:05:51,379 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 50 states have internal predecessors, (118), 17 states have call successors, (19), 1 states have call predecessors, (19), 26 states have return successors, (38), 37 states have call predecessors, (38), 17 states have call successors, (38) Word has length 100 [2024-09-25 00:05:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:51,380 INFO L225 Difference]: With dead ends: 91 [2024-09-25 00:05:51,380 INFO L226 Difference]: Without dead ends: 84 [2024-09-25 00:05:51,382 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2812 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=906, Invalid=12434, Unknown=0, NotChecked=0, Total=13340 [2024-09-25 00:05:51,382 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 146 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:51,383 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 837 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-25 00:05:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-25 00:05:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2024-09-25 00:05:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 50 states have internal predecessors, (53), 10 states have call successors, (10), 6 states have call predecessors, (10), 15 states have return successors, (40), 18 states have call predecessors, (40), 9 states have call successors, (40) [2024-09-25 00:05:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2024-09-25 00:05:51,410 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 100 [2024-09-25 00:05:51,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:51,411 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2024-09-25 00:05:51,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 50 states have internal predecessors, (118), 17 states have call successors, (19), 1 states have call predecessors, (19), 26 states have return successors, (38), 37 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-25 00:05:51,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:51,412 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2024-09-25 00:05:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-09-25 00:05:51,413 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:51,413 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:51,431 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-25 00:05:51,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-25 00:05:51,614 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:51,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:51,614 INFO L85 PathProgramCache]: Analyzing trace with hash 179440229, now seen corresponding path program 13 times [2024-09-25 00:05:51,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:51,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4395271] [2024-09-25 00:05:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:51,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:52,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:52,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:52,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:52,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:52,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:52,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:52,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:52,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:52,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 00:05:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:52,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:53,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:53,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:53,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:53,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:53,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:54,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:54,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:54,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:54,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 60 proven. 486 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-09-25 00:05:54,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:54,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4395271] [2024-09-25 00:05:54,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4395271] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:54,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807285926] [2024-09-25 00:05:54,416 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:05:54,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:54,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:54,418 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:05:54,419 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-25 00:05:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:54,529 WARN L260 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-09-25 00:05:54,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 10 proven. 460 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2024-09-25 00:05:55,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 65 proven. 783 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-25 00:06:00,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807285926] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:00,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:00,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 30, 57] total 112 [2024-09-25 00:06:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415254136] [2024-09-25 00:06:00,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:00,799 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-09-25 00:06:00,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-09-25 00:06:00,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=12000, Unknown=0, NotChecked=0, Total=12432 [2024-09-25 00:06:00,801 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 112 states, 108 states have (on average 1.3981481481481481) internal successors, (151), 65 states have internal predecessors, (151), 22 states have call successors, (24), 1 states have call predecessors, (24), 36 states have return successors, (49), 48 states have call predecessors, (49), 22 states have call successors, (49) [2024-09-25 00:06:04,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:04,430 INFO L93 Difference]: Finished difference Result 103 states and 152 transitions. [2024-09-25 00:06:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-25 00:06:04,431 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 108 states have (on average 1.3981481481481481) internal successors, (151), 65 states have internal predecessors, (151), 22 states have call successors, (24), 1 states have call predecessors, (24), 36 states have return successors, (49), 48 states have call predecessors, (49), 22 states have call successors, (49) Word has length 135 [2024-09-25 00:06:04,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:04,433 INFO L225 Difference]: With dead ends: 103 [2024-09-25 00:06:04,433 INFO L226 Difference]: Without dead ends: 87 [2024-09-25 00:06:04,436 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4708 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1564, Invalid=21692, Unknown=0, NotChecked=0, Total=23256 [2024-09-25 00:06:04,436 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 147 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 4895 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 5058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 4895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:04,437 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1250 Invalid, 5058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 4895 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-25 00:06:04,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-25 00:06:04,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2024-09-25 00:06:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 52 states have internal predecessors, (55), 10 states have call successors, (10), 6 states have call predecessors, (10), 16 states have return successors, (43), 19 states have call predecessors, (43), 9 states have call successors, (43) [2024-09-25 00:06:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 108 transitions. [2024-09-25 00:06:04,466 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 108 transitions. Word has length 135 [2024-09-25 00:06:04,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:04,466 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 108 transitions. [2024-09-25 00:06:04,467 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 108 states have (on average 1.3981481481481481) internal successors, (151), 65 states have internal predecessors, (151), 22 states have call successors, (24), 1 states have call predecessors, (24), 36 states have return successors, (49), 48 states have call predecessors, (49), 22 states have call successors, (49) [2024-09-25 00:06:04,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 108 transitions. [2024-09-25 00:06:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-09-25 00:06:04,469 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:04,469 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:06:04,487 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-25 00:06:04,669 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-25 00:06:04,670 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:04,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:04,671 INFO L85 PathProgramCache]: Analyzing trace with hash -395770423, now seen corresponding path program 14 times [2024-09-25 00:06:04,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:04,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276629170] [2024-09-25 00:06:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:04,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:04,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:04,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:06:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:05,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:05,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:05,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:06:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:05,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:05,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:05,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:06,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:06,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:06,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:06,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:06,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:06,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:06,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:06,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 48 proven. 336 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-09-25 00:06:06,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276629170] [2024-09-25 00:06:06,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276629170] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306133606] [2024-09-25 00:06:06,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:06:06,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:06,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:06,910 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:06:06,911 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-25 00:06:07,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:06:07,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:07,019 WARN L260 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-09-25 00:06:07,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 11 proven. 321 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-25 00:06:08,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 44 proven. 528 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-09-25 00:06:11,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306133606] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:11,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:11,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 48] total 98 [2024-09-25 00:06:11,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429489721] [2024-09-25 00:06:11,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:11,851 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-25 00:06:11,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:11,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-25 00:06:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=9148, Unknown=0, NotChecked=0, Total=9506 [2024-09-25 00:06:11,853 INFO L87 Difference]: Start difference. First operand 78 states and 108 transitions. Second operand has 98 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 56 states have internal predecessors, (131), 19 states have call successors, (21), 1 states have call predecessors, (21), 30 states have return successors, (44), 43 states have call predecessors, (44), 19 states have call successors, (44) [2024-09-25 00:06:14,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:14,603 INFO L93 Difference]: Finished difference Result 97 states and 139 transitions. [2024-09-25 00:06:14,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-25 00:06:14,603 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 56 states have internal predecessors, (131), 19 states have call successors, (21), 1 states have call predecessors, (21), 30 states have return successors, (44), 43 states have call predecessors, (44), 19 states have call successors, (44) Word has length 114 [2024-09-25 00:06:14,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:14,608 INFO L225 Difference]: With dead ends: 97 [2024-09-25 00:06:14,608 INFO L226 Difference]: Without dead ends: 90 [2024-09-25 00:06:14,614 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3673 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1096, Invalid=16196, Unknown=0, NotChecked=0, Total=17292 [2024-09-25 00:06:14,615 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 165 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 3943 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 4172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 3943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:14,615 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1363 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 3943 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-25 00:06:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-25 00:06:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2024-09-25 00:06:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 54 states have internal predecessors, (57), 10 states have call successors, (10), 6 states have call predecessors, (10), 17 states have return successors, (46), 20 states have call predecessors, (46), 9 states have call successors, (46) [2024-09-25 00:06:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 113 transitions. [2024-09-25 00:06:14,648 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 113 transitions. Word has length 114 [2024-09-25 00:06:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:14,649 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 113 transitions. [2024-09-25 00:06:14,649 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 56 states have internal predecessors, (131), 19 states have call successors, (21), 1 states have call predecessors, (21), 30 states have return successors, (44), 43 states have call predecessors, (44), 19 states have call successors, (44) [2024-09-25 00:06:14,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:14,650 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 113 transitions. [2024-09-25 00:06:14,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-25 00:06:14,651 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:14,651 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:06:14,668 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-25 00:06:14,852 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-25 00:06:14,852 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:14,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1084266083, now seen corresponding path program 15 times [2024-09-25 00:06:14,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:14,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742975006] [2024-09-25 00:06:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:14,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:15,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:15,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:06:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:15,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:15,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:15,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:06:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:15,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:15,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:16,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:16,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:16,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:16,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:16,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:16,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:17,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:17,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:17,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:17,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 52 proven. 383 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-09-25 00:06:17,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:17,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742975006] [2024-09-25 00:06:17,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742975006] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:17,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393708374] [2024-09-25 00:06:17,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:06:17,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:17,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:17,376 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:06:17,377 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-25 00:06:17,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-25 00:06:17,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:17,500 WARN L260 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-09-25 00:06:17,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 12 proven. 367 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2024-09-25 00:06:18,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 47 proven. 611 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-25 00:06:23,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393708374] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:23,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:23,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 34, 51] total 104 [2024-09-25 00:06:23,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274408884] [2024-09-25 00:06:23,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:23,149 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-25 00:06:23,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-25 00:06:23,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=10332, Unknown=0, NotChecked=0, Total=10712 [2024-09-25 00:06:23,151 INFO L87 Difference]: Start difference. First operand 81 states and 113 transitions. Second operand has 104 states, 100 states have (on average 1.39) internal successors, (139), 59 states have internal predecessors, (139), 20 states have call successors, (22), 1 states have call predecessors, (22), 32 states have return successors, (47), 46 states have call predecessors, (47), 20 states have call successors, (47) [2024-09-25 00:06:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:25,975 INFO L93 Difference]: Finished difference Result 100 states and 144 transitions. [2024-09-25 00:06:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-25 00:06:25,975 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 100 states have (on average 1.39) internal successors, (139), 59 states have internal predecessors, (139), 20 states have call successors, (22), 1 states have call predecessors, (22), 32 states have return successors, (47), 46 states have call predecessors, (47), 20 states have call successors, (47) Word has length 121 [2024-09-25 00:06:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:25,977 INFO L225 Difference]: With dead ends: 100 [2024-09-25 00:06:25,977 INFO L226 Difference]: Without dead ends: 93 [2024-09-25 00:06:25,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4142 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1197, Invalid=18263, Unknown=0, NotChecked=0, Total=19460 [2024-09-25 00:06:25,980 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 239 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 3782 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 3987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 3782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:25,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1188 Invalid, 3987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 3782 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-25 00:06:25,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-25 00:06:26,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2024-09-25 00:06:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 10 states have call successors, (10), 6 states have call predecessors, (10), 18 states have return successors, (49), 21 states have call predecessors, (49), 9 states have call successors, (49) [2024-09-25 00:06:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2024-09-25 00:06:26,010 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 121 [2024-09-25 00:06:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:26,010 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2024-09-25 00:06:26,010 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 100 states have (on average 1.39) internal successors, (139), 59 states have internal predecessors, (139), 20 states have call successors, (22), 1 states have call predecessors, (22), 32 states have return successors, (47), 46 states have call predecessors, (47), 20 states have call successors, (47) [2024-09-25 00:06:26,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2024-09-25 00:06:26,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-25 00:06:26,012 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:26,012 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:06:26,028 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-25 00:06:26,212 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:26,213 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:26,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1846777569, now seen corresponding path program 16 times [2024-09-25 00:06:26,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:26,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001685659] [2024-09-25 00:06:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:26,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:06:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:06:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:27,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:27,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:27,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:27,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:28,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:28,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:28,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:28,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:28,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:28,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:29,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:29,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:29,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 56 proven. 433 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-09-25 00:06:29,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:29,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001685659] [2024-09-25 00:06:29,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001685659] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:29,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138403175] [2024-09-25 00:06:29,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:06:29,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:29,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:29,380 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:06:29,382 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-25 00:06:29,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:06:29,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:29,508 WARN L260 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 205 conjuncts are in the unsatisfiable core [2024-09-25 00:06:29,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 13 proven. 416 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-09-25 00:06:30,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 50 proven. 700 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-25 00:06:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138403175] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:35,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:35,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 36, 54] total 110 [2024-09-25 00:06:35,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079609344] [2024-09-25 00:06:35,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:35,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-09-25 00:06:35,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:35,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-09-25 00:06:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=11588, Unknown=0, NotChecked=0, Total=11990 [2024-09-25 00:06:35,747 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 110 states, 106 states have (on average 1.3867924528301887) internal successors, (147), 62 states have internal predecessors, (147), 21 states have call successors, (23), 1 states have call predecessors, (23), 34 states have return successors, (50), 49 states have call predecessors, (50), 21 states have call successors, (50) [2024-09-25 00:06:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:38,812 INFO L93 Difference]: Finished difference Result 103 states and 149 transitions. [2024-09-25 00:06:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-25 00:06:38,812 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 106 states have (on average 1.3867924528301887) internal successors, (147), 62 states have internal predecessors, (147), 21 states have call successors, (23), 1 states have call predecessors, (23), 34 states have return successors, (50), 49 states have call predecessors, (50), 21 states have call successors, (50) Word has length 128 [2024-09-25 00:06:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:38,814 INFO L225 Difference]: With dead ends: 103 [2024-09-25 00:06:38,814 INFO L226 Difference]: Without dead ends: 96 [2024-09-25 00:06:38,816 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4639 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1302, Invalid=20454, Unknown=0, NotChecked=0, Total=21756 [2024-09-25 00:06:38,816 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 215 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 4038 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 4038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:38,816 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1299 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 4038 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-25 00:06:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-25 00:06:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2024-09-25 00:06:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 58 states have internal predecessors, (61), 10 states have call successors, (10), 6 states have call predecessors, (10), 19 states have return successors, (52), 22 states have call predecessors, (52), 9 states have call successors, (52) [2024-09-25 00:06:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2024-09-25 00:06:38,844 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 128 [2024-09-25 00:06:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:38,845 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2024-09-25 00:06:38,845 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 106 states have (on average 1.3867924528301887) internal successors, (147), 62 states have internal predecessors, (147), 21 states have call successors, (23), 1 states have call predecessors, (23), 34 states have return successors, (50), 49 states have call predecessors, (50), 21 states have call successors, (50) [2024-09-25 00:06:38,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2024-09-25 00:06:38,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-25 00:06:38,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:38,847 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:06:38,864 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-25 00:06:39,051 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:39,052 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:39,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:39,052 INFO L85 PathProgramCache]: Analyzing trace with hash -709306135, now seen corresponding path program 17 times [2024-09-25 00:06:39,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:39,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784083038] [2024-09-25 00:06:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:39,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:39,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:39,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:06:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:39,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:39,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:39,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:39,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:39,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:40,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:40,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:40,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-25 00:06:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:40,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:42,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:42,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:42,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:42,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:43,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:43,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:43,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:43,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:43,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:43,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 80 proven. 796 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2024-09-25 00:06:43,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:43,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784083038] [2024-09-25 00:06:43,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784083038] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:43,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733016299] [2024-09-25 00:06:43,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:06:43,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:43,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:43,871 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:06:43,872 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-25 00:06:44,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-25 00:06:44,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:44,033 WARN L260 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 277 conjuncts are in the unsatisfiable core [2024-09-25 00:06:44,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 14 proven. 763 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2024-09-25 00:06:46,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 83 proven. 1345 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-09-25 00:06:53,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733016299] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:53,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:53,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 38, 72] total 141 [2024-09-25 00:06:53,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181115985] [2024-09-25 00:06:53,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:53,983 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-09-25 00:06:53,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-09-25 00:06:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=19196, Unknown=0, NotChecked=0, Total=19740 [2024-09-25 00:06:53,986 INFO L87 Difference]: Start difference. First operand 87 states and 123 transitions. Second operand has 141 states, 137 states have (on average 1.3868613138686132) internal successors, (190), 80 states have internal predecessors, (190), 27 states have call successors, (29), 1 states have call predecessors, (29), 46 states have return successors, (63), 62 states have call predecessors, (63), 27 states have call successors, (63) [2024-09-25 00:06:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:59,377 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2024-09-25 00:06:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-25 00:06:59,377 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 137 states have (on average 1.3868613138686132) internal successors, (190), 80 states have internal predecessors, (190), 27 states have call successors, (29), 1 states have call predecessors, (29), 46 states have return successors, (63), 62 states have call predecessors, (63), 27 states have call successors, (63) Word has length 170 [2024-09-25 00:06:59,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:59,379 INFO L225 Difference]: With dead ends: 119 [2024-09-25 00:06:59,379 INFO L226 Difference]: Without dead ends: 99 [2024-09-25 00:06:59,382 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7650 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=2288, Invalid=35154, Unknown=0, NotChecked=0, Total=37442 [2024-09-25 00:06:59,383 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 261 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 6522 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 6940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 6522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:59,383 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1610 Invalid, 6940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 6522 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-09-25 00:06:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-25 00:06:59,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2024-09-25 00:06:59,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 60 states have internal predecessors, (63), 10 states have call successors, (10), 6 states have call predecessors, (10), 20 states have return successors, (55), 23 states have call predecessors, (55), 9 states have call successors, (55) [2024-09-25 00:06:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 128 transitions. [2024-09-25 00:06:59,425 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 128 transitions. Word has length 170 [2024-09-25 00:06:59,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:59,425 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 128 transitions. [2024-09-25 00:06:59,426 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 137 states have (on average 1.3868613138686132) internal successors, (190), 80 states have internal predecessors, (190), 27 states have call successors, (29), 1 states have call predecessors, (29), 46 states have return successors, (63), 62 states have call predecessors, (63), 27 states have call successors, (63) [2024-09-25 00:06:59,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 128 transitions. [2024-09-25 00:06:59,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-25 00:06:59,427 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:59,427 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:06:59,447 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-25 00:06:59,628 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:59,628 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:59,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:59,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1661807989, now seen corresponding path program 18 times [2024-09-25 00:06:59,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:59,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554178754] [2024-09-25 00:06:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:59,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:07:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:07:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:01,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:01,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:01,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:01,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:02,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:02,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:02,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:02,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:02,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:02,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:03,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:03,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:03,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:03,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 64 proven. 542 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2024-09-25 00:07:03,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554178754] [2024-09-25 00:07:03,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554178754] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577264685] [2024-09-25 00:07:03,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:07:03,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:03,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:03,348 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:07:03,349 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-25 00:07:03,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-25 00:07:03,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:03,512 WARN L260 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 228 conjuncts are in the unsatisfiable core [2024-09-25 00:07:03,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 36 proven. 538 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-09-25 00:07:05,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 57 proven. 899 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-09-25 00:07:11,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577264685] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:11,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:11,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 44, 64] total 127 [2024-09-25 00:07:11,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740971571] [2024-09-25 00:07:11,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:11,947 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2024-09-25 00:07:11,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:11,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2024-09-25 00:07:11,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=15519, Unknown=0, NotChecked=0, Total=16002 [2024-09-25 00:07:11,949 INFO L87 Difference]: Start difference. First operand 90 states and 128 transitions. Second operand has 127 states, 122 states have (on average 1.3934426229508197) internal successors, (170), 73 states have internal predecessors, (170), 23 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (57), 55 states have call predecessors, (57), 23 states have call successors, (57) [2024-09-25 00:07:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:15,936 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2024-09-25 00:07:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-25 00:07:15,937 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 122 states have (on average 1.3934426229508197) internal successors, (170), 73 states have internal predecessors, (170), 23 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (57), 55 states have call predecessors, (57), 23 states have call successors, (57) Word has length 142 [2024-09-25 00:07:15,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:15,938 INFO L225 Difference]: With dead ends: 109 [2024-09-25 00:07:15,938 INFO L226 Difference]: Without dead ends: 102 [2024-09-25 00:07:15,941 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6169 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1702, Invalid=26690, Unknown=0, NotChecked=0, Total=28392 [2024-09-25 00:07:15,941 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 323 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 4945 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 5402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 4945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:15,941 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1602 Invalid, 5402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 4945 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-09-25 00:07:15,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-25 00:07:15,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2024-09-25 00:07:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 62 states have internal predecessors, (65), 10 states have call successors, (10), 6 states have call predecessors, (10), 21 states have return successors, (58), 24 states have call predecessors, (58), 9 states have call successors, (58) [2024-09-25 00:07:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2024-09-25 00:07:15,978 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 142 [2024-09-25 00:07:15,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:15,979 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2024-09-25 00:07:15,979 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 122 states have (on average 1.3934426229508197) internal successors, (170), 73 states have internal predecessors, (170), 23 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (57), 55 states have call predecessors, (57), 23 states have call successors, (57) [2024-09-25 00:07:15,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2024-09-25 00:07:15,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-09-25 00:07:15,981 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:15,981 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:07:16,003 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-25 00:07:16,182 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-25 00:07:16,183 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:16,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:16,183 INFO L85 PathProgramCache]: Analyzing trace with hash 882713721, now seen corresponding path program 19 times [2024-09-25 00:07:16,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:16,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879806047] [2024-09-25 00:07:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:16,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:16,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:16,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:07:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:16,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:17,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:17,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:17,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:17,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:17,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:17,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:17,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:17,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 00:07:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:18,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:18,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:18,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:19,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:19,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:19,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:19,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:20,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:20,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:20,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:20,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:20,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:20,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:21,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:21,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:21,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 92 proven. 1018 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2024-09-25 00:07:21,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879806047] [2024-09-25 00:07:21,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879806047] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778575558] [2024-09-25 00:07:21,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:07:21,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:21,360 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:07:21,361 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-25 00:07:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:21,550 WARN L260 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 313 conjuncts are in the unsatisfiable core [2024-09-25 00:07:21,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 16 proven. 980 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2024-09-25 00:07:24,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 95 proven. 1753 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-09-25 00:07:34,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778575558] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:34,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:34,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 42, 81] total 158 [2024-09-25 00:07:34,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439241157] [2024-09-25 00:07:34,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:34,269 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2024-09-25 00:07:34,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:34,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2024-09-25 00:07:34,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=24194, Unknown=0, NotChecked=0, Total=24806 [2024-09-25 00:07:34,272 INFO L87 Difference]: Start difference. First operand 93 states and 133 transitions. Second operand has 158 states, 154 states have (on average 1.3831168831168832) internal successors, (213), 89 states have internal predecessors, (213), 30 states have call successors, (32), 1 states have call predecessors, (32), 52 states have return successors, (71), 70 states have call predecessors, (71), 30 states have call successors, (71) [2024-09-25 00:07:41,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:41,631 INFO L93 Difference]: Finished difference Result 127 states and 194 transitions. [2024-09-25 00:07:41,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-25 00:07:41,632 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 154 states have (on average 1.3831168831168832) internal successors, (213), 89 states have internal predecessors, (213), 30 states have call successors, (32), 1 states have call predecessors, (32), 52 states have return successors, (71), 70 states have call predecessors, (71), 30 states have call successors, (71) Word has length 191 [2024-09-25 00:07:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:41,634 INFO L225 Difference]: With dead ends: 127 [2024-09-25 00:07:41,634 INFO L226 Difference]: Without dead ends: 105 [2024-09-25 00:07:41,638 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9582 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=2736, Invalid=44136, Unknown=0, NotChecked=0, Total=46872 [2024-09-25 00:07:41,639 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 340 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 9499 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 10017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 9499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:41,639 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2291 Invalid, 10017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 9499 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-09-25 00:07:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-25 00:07:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2024-09-25 00:07:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 64 states have internal predecessors, (67), 10 states have call successors, (10), 6 states have call predecessors, (10), 22 states have return successors, (61), 25 states have call predecessors, (61), 9 states have call successors, (61) [2024-09-25 00:07:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2024-09-25 00:07:41,676 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 138 transitions. Word has length 191 [2024-09-25 00:07:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:41,676 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 138 transitions. [2024-09-25 00:07:41,676 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 154 states have (on average 1.3831168831168832) internal successors, (213), 89 states have internal predecessors, (213), 30 states have call successors, (32), 1 states have call predecessors, (32), 52 states have return successors, (71), 70 states have call predecessors, (71), 30 states have call successors, (71) [2024-09-25 00:07:41,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:41,677 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 138 transitions. [2024-09-25 00:07:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-25 00:07:41,678 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:41,678 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:07:41,698 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-25 00:07:41,878 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-25 00:07:41,879 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:41,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1086059211, now seen corresponding path program 20 times [2024-09-25 00:07:41,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:41,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357719339] [2024-09-25 00:07:41,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:41,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:42,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:42,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:07:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:42,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:42,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:42,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:07:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:42,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:43,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:43,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:44,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:44,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:44,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:45,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:45,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:45,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:45,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:45,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:45,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:46,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:46,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:46,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:46,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:46,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 72 proven. 663 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-09-25 00:07:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:46,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357719339] [2024-09-25 00:07:46,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357719339] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:46,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354763729] [2024-09-25 00:07:46,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:07:46,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:46,527 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:07:46,528 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-25 00:07:46,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:07:46,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:46,723 WARN L260 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 253 conjuncts are in the unsatisfiable core [2024-09-25 00:07:46,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 17 proven. 642 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-09-25 00:07:48,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 62 proven. 1116 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-09-25 00:07:56,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354763729] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:56,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:56,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 44, 66] total 134 [2024-09-25 00:07:56,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561819171] [2024-09-25 00:07:56,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:56,275 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-25 00:07:56,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-25 00:07:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=17332, Unknown=0, NotChecked=0, Total=17822 [2024-09-25 00:07:56,279 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. Second operand has 134 states, 130 states have (on average 1.376923076923077) internal successors, (179), 74 states have internal predecessors, (179), 25 states have call successors, (27), 1 states have call predecessors, (27), 42 states have return successors, (62), 61 states have call predecessors, (62), 25 states have call successors, (62) [2024-09-25 00:08:01,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:01,329 INFO L93 Difference]: Finished difference Result 115 states and 169 transitions. [2024-09-25 00:08:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-25 00:08:01,330 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 130 states have (on average 1.376923076923077) internal successors, (179), 74 states have internal predecessors, (179), 25 states have call successors, (27), 1 states have call predecessors, (27), 42 states have return successors, (62), 61 states have call predecessors, (62), 25 states have call successors, (62) Word has length 156 [2024-09-25 00:08:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:01,331 INFO L225 Difference]: With dead ends: 115 [2024-09-25 00:08:01,331 INFO L226 Difference]: Without dead ends: 108 [2024-09-25 00:08:01,334 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6908 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1762, Invalid=30458, Unknown=0, NotChecked=0, Total=32220 [2024-09-25 00:08:01,335 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 388 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 6717 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 7017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 6717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:01,335 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 2278 Invalid, 7017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 6717 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-09-25 00:08:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-25 00:08:01,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2024-09-25 00:08:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 66 states have internal predecessors, (69), 10 states have call successors, (10), 6 states have call predecessors, (10), 23 states have return successors, (64), 26 states have call predecessors, (64), 9 states have call successors, (64) [2024-09-25 00:08:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2024-09-25 00:08:01,385 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 156 [2024-09-25 00:08:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:01,385 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2024-09-25 00:08:01,385 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 130 states have (on average 1.376923076923077) internal successors, (179), 74 states have internal predecessors, (179), 25 states have call successors, (27), 1 states have call predecessors, (27), 42 states have return successors, (62), 61 states have call predecessors, (62), 25 states have call successors, (62) [2024-09-25 00:08:01,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:01,385 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2024-09-25 00:08:01,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-25 00:08:01,387 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:01,387 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 27, 27, 27, 27, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:01,405 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-25 00:08:01,587 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:01,588 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:01,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:01,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1019719079, now seen corresponding path program 21 times [2024-09-25 00:08:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:01,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598363373] [2024-09-25 00:08:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:01,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:02,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:02,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:08:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:02,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:02,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:02,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:02,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:02,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:03,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:03,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:03,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:03,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:03,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 00:08:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:04,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:04,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:04,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:05,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:05,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:06,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:06,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:06,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:06,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:07,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 104 proven. 1267 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-09-25 00:08:08,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:08,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598363373] [2024-09-25 00:08:08,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598363373] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:08,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008626868] [2024-09-25 00:08:08,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:08:08,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:08,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:08,464 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:08:08,467 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-25 00:08:08,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-09-25 00:08:08,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:08:08,733 WARN L260 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 349 conjuncts are in the unsatisfiable core [2024-09-25 00:08:08,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:08:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 18 proven. 1224 refuted. 0 times theorem prover too weak. 1490 trivial. 0 not checked. [2024-09-25 00:08:11,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:08:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 107 proven. 2215 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-09-25 00:08:24,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008626868] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:08:24,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:08:24,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 46, 90] total 175 [2024-09-25 00:08:24,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465498646] [2024-09-25 00:08:24,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:08:24,115 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-09-25 00:08:24,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:08:24,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-09-25 00:08:24,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=29770, Unknown=0, NotChecked=0, Total=30450 [2024-09-25 00:08:24,119 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 175 states, 171 states have (on average 1.3801169590643274) internal successors, (236), 98 states have internal predecessors, (236), 33 states have call successors, (35), 1 states have call predecessors, (35), 58 states have return successors, (79), 78 states have call predecessors, (79), 33 states have call successors, (79) [2024-09-25 00:08:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:08:32,763 INFO L93 Difference]: Finished difference Result 135 states and 208 transitions. [2024-09-25 00:08:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-25 00:08:32,764 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 171 states have (on average 1.3801169590643274) internal successors, (236), 98 states have internal predecessors, (236), 33 states have call successors, (35), 1 states have call predecessors, (35), 58 states have return successors, (79), 78 states have call predecessors, (79), 33 states have call successors, (79) Word has length 212 [2024-09-25 00:08:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:08:32,766 INFO L225 Difference]: With dead ends: 135 [2024-09-25 00:08:32,766 INFO L226 Difference]: Without dead ends: 111 [2024-09-25 00:08:32,771 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11725 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=3220, Invalid=54140, Unknown=0, NotChecked=0, Total=57360 [2024-09-25 00:08:32,772 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 512 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 10876 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 11519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 10876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-09-25 00:08:32,772 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2472 Invalid, 11519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 10876 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-09-25 00:08:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-25 00:08:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2024-09-25 00:08:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 68 states have internal predecessors, (71), 10 states have call successors, (10), 6 states have call predecessors, (10), 24 states have return successors, (67), 27 states have call predecessors, (67), 9 states have call successors, (67) [2024-09-25 00:08:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 148 transitions. [2024-09-25 00:08:32,853 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 148 transitions. Word has length 212 [2024-09-25 00:08:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:08:32,853 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 148 transitions. [2024-09-25 00:08:32,853 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 171 states have (on average 1.3801169590643274) internal successors, (236), 98 states have internal predecessors, (236), 33 states have call successors, (35), 1 states have call predecessors, (35), 58 states have return successors, (79), 78 states have call predecessors, (79), 33 states have call successors, (79) [2024-09-25 00:08:32,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 148 transitions. [2024-09-25 00:08:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-25 00:08:32,855 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:08:32,855 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:08:32,874 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-25 00:08:33,055 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-25 00:08:33,056 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:08:33,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:08:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1710663391, now seen corresponding path program 22 times [2024-09-25 00:08:33,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:08:33,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396915006] [2024-09-25 00:08:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:08:33,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:08:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:08:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:08:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:33,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 00:08:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:34,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:35,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:35,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:36,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:37,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:37,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:37,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:37,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:38,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:39,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:39,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:08:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:08:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 80 proven. 796 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2024-09-25 00:08:39,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:08:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396915006] [2024-09-25 00:08:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396915006] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:08:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273153965] [2024-09-25 00:08:39,225 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:08:39,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:08:39,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:08:39,227 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:08:39,228 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-25 00:08:39,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:08:39,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:08:39,473 WARN L260 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 277 conjuncts are in the unsatisfiable core [2024-09-25 00:08:39,476 INFO L285 TraceCheckSpWp]: Computing forward predicates...