./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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 03:09:40,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 03:09:40,699 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 03:09:40,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 03:09:40,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 03:09:40,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 03:09:40,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 03:09:40,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 03:09:40,739 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 03:09:40,740 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 03:09:40,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 03:09:40,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 03:09:40,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 03:09:40,744 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 03:09:40,744 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 03:09:40,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 03:09:40,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 03:09:40,745 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 03:09:40,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 03:09:40,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 03:09:40,746 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 03:09:40,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 03:09:40,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 03:09:40,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 03:09:40,748 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 03:09:40,749 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 03:09:40,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 03:09:40,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 03:09:40,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 03:09:40,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 03:09:40,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 03:09:40,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 03:09:40,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:09:40,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 03:09:40,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 03:09:40,752 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 03:09:40,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 03:09:40,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 03:09:40,753 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 03:09:40,753 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 03:09:40,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 03:09:40,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 03:09:40,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 03:09:41,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 03:09:41,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 03:09:41,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 03:09:41,042 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 03:09:41,042 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 03:09:41,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/MultCommutative-2.c [2024-09-13 03:09:42,448 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 03:09:42,663 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 03:09:42,664 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/MultCommutative-2.c [2024-09-13 03:09:42,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/5b9453291/66de9e44d9cd4e568cfa88d430a75101/FLAGc30f9a509 [2024-09-13 03:09:42,694 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/5b9453291/66de9e44d9cd4e568cfa88d430a75101 [2024-09-13 03:09:42,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 03:09:42,699 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 03:09:42,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 03:09:42,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 03:09:42,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 03:09:42,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:42,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a0e965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42, skipping insertion in model container [2024-09-13 03:09:42,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:42,734 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 03:09:42,903 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2024-09-13 03:09:42,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:09:42,923 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 03:09:42,941 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2024-09-13 03:09:42,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:09:42,960 INFO L204 MainTranslator]: Completed translation [2024-09-13 03:09:42,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42 WrapperNode [2024-09-13 03:09:42,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 03:09:42,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 03:09:42,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 03:09:42,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 03:09:42,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:42,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:42,987 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 03:09:42,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 03:09:42,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 03:09:42,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 03:09:42,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 03:09:42,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:42,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:43,004 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:43,023 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-13 03:09:43,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:43,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:43,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:43,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:43,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:43,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:43,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 03:09:43,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 03:09:43,061 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 03:09:43,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 03:09:43,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (1/1) ... [2024-09-13 03:09:43,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:09:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:43,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 03:09:43,100 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 03:09:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 03:09:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 03:09:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 03:09:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2024-09-13 03:09:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2024-09-13 03:09:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 03:09:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 03:09:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 03:09:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 03:09:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 03:09:43,234 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 03:09:43,236 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 03:09:43,417 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-13 03:09:43,418 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 03:09:43,449 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 03:09:43,449 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 03:09:43,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:09:43 BoogieIcfgContainer [2024-09-13 03:09:43,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 03:09:43,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 03:09:43,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 03:09:43,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 03:09:43,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 03:09:42" (1/3) ... [2024-09-13 03:09:43,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42338b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:09:43, skipping insertion in model container [2024-09-13 03:09:43,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:09:42" (2/3) ... [2024-09-13 03:09:43,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42338b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:09:43, skipping insertion in model container [2024-09-13 03:09:43,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:09:43" (3/3) ... [2024-09-13 03:09:43,461 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2024-09-13 03:09:43,478 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 03:09:43,479 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 03:09:43,545 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 03:09:43,551 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;@642f119e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 03:09:43,551 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 03:09:43,555 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) [2024-09-13 03:09:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-13 03:09:43,563 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:43,563 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:09:43,564 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:43,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:43,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1859846447, now seen corresponding path program 1 times [2024-09-13 03:09:43,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:43,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189240722] [2024-09-13 03:09:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:43,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:43,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:09:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:44,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 03:09:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 03:09:44,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:44,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189240722] [2024-09-13 03:09:44,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189240722] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:09:44,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:09:44,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 03:09:44,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131111588] [2024-09-13 03:09:44,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:09:44,098 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 03:09:44,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:44,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 03:09:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-13 03:09:44,126 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) [2024-09-13 03:09:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:44,297 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2024-09-13 03:09:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 03:09:44,300 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 [2024-09-13 03:09:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:44,307 INFO L225 Difference]: With dead ends: 41 [2024-09-13 03:09:44,308 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 03:09:44,310 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 [2024-09-13 03:09:44,313 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:44,315 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 164 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:09:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 03:09:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-13 03:09:44,354 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) [2024-09-13 03:09:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-09-13 03:09:44,359 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 23 [2024-09-13 03:09:44,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:44,359 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-09-13 03:09:44,360 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) [2024-09-13 03:09:44,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:44,360 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-09-13 03:09:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 03:09:44,365 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:44,365 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] [2024-09-13 03:09:44,365 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 03:09:44,366 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:44,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1394897481, now seen corresponding path program 1 times [2024-09-13 03:09:44,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:44,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653101251] [2024-09-13 03:09:44,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:44,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:44,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:44,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:09:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:44,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 03:09:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:44,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:09:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 03:09:44,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653101251] [2024-09-13 03:09:44,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653101251] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:44,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193463853] [2024-09-13 03:09:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:44,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:44,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:44,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:44,564 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 03:09:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:44,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-13 03:09:44,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 03:09:44,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 03:09:44,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193463853] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:44,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:44,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2024-09-13 03:09:44,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430637230] [2024-09-13 03:09:44,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:44,842 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 03:09:44,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:44,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 03:09:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-09-13 03:09:44,844 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) [2024-09-13 03:09:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:45,067 INFO L93 Difference]: Finished difference Result 55 states and 86 transitions. [2024-09-13 03:09:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 03:09:45,068 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 [2024-09-13 03:09:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:45,069 INFO L225 Difference]: With dead ends: 55 [2024-09-13 03:09:45,069 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 03:09:45,071 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 [2024-09-13 03:09:45,072 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 [2024-09-13 03:09:45,073 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] [2024-09-13 03:09:45,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 03:09:45,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-13 03:09:45,088 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) [2024-09-13 03:09:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-09-13 03:09:45,090 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 29 [2024-09-13 03:09:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:45,091 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-09-13 03:09:45,091 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) [2024-09-13 03:09:45,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:45,092 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-09-13 03:09:45,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-13 03:09:45,093 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:45,094 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] [2024-09-13 03:09:45,106 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 03:09:45,296 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:45,297 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:45,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:45,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1508818693, now seen corresponding path program 1 times [2024-09-13 03:09:45,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:45,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84425600] [2024-09-13 03:09:45,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:45,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:09:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 03:09:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-13 03:09:45,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:45,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84425600] [2024-09-13 03:09:45,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84425600] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:09:45,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:09:45,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 03:09:45,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523538325] [2024-09-13 03:09:45,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:09:45,428 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 03:09:45,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:45,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 03:09:45,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:09:45,430 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) [2024-09-13 03:09:45,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:45,508 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-09-13 03:09:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 03:09:45,509 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 [2024-09-13 03:09:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:45,510 INFO L225 Difference]: With dead ends: 34 [2024-09-13 03:09:45,511 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 03:09:45,512 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 [2024-09-13 03:09:45,513 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:45,513 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:09:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 03:09:45,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-13 03:09:45,521 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) [2024-09-13 03:09:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-09-13 03:09:45,522 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 30 [2024-09-13 03:09:45,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:45,523 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-09-13 03:09:45,523 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) [2024-09-13 03:09:45,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-09-13 03:09:45,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 03:09:45,525 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:45,525 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] [2024-09-13 03:09:45,525 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 03:09:45,526 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:45,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:45,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1681162323, now seen corresponding path program 1 times [2024-09-13 03:09:45,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:45,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117536721] [2024-09-13 03:09:45,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:45,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:09:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 03:09:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 03:09:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-13 03:09:45,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:45,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117536721] [2024-09-13 03:09:45,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117536721] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313315558] [2024-09-13 03:09:45,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:45,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:45,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:45,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:45,713 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 03:09:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:45,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 03:09:45,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-13 03:09:45,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-09-13 03:09:46,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313315558] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:46,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:46,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-09-13 03:09:46,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395968331] [2024-09-13 03:09:46,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:46,101 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 03:09:46,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:46,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 03:09:46,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-09-13 03:09:46,102 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) [2024-09-13 03:09:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:46,200 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-09-13 03:09:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 03:09:46,200 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 [2024-09-13 03:09:46,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:46,201 INFO L225 Difference]: With dead ends: 49 [2024-09-13 03:09:46,201 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 03:09:46,202 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 [2024-09-13 03:09:46,203 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 [2024-09-13 03:09:46,203 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] [2024-09-13 03:09:46,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 03:09:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-13 03:09:46,210 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) [2024-09-13 03:09:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-09-13 03:09:46,214 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 50 [2024-09-13 03:09:46,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:46,214 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-09-13 03:09:46,214 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) [2024-09-13 03:09:46,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-09-13 03:09:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-13 03:09:46,215 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:46,215 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] [2024-09-13 03:09:46,231 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 03:09:46,416 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 [2024-09-13 03:09:46,416 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:46,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:46,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1570908093, now seen corresponding path program 2 times [2024-09-13 03:09:46,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:46,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126240412] [2024-09-13 03:09:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:46,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:46,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:09:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:46,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:46,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 03:09:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:46,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 03:09:46,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:46,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126240412] [2024-09-13 03:09:46,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126240412] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:46,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370677046] [2024-09-13 03:09:46,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:09:46,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:46,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:46,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:46,848 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 03:09:46,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:09:46,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:46,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-13 03:09:46,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 03:09:47,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 03:09:48,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370677046] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:48,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:48,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2024-09-13 03:09:48,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185287045] [2024-09-13 03:09:48,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:48,250 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-13 03:09:48,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:48,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-13 03:09:48,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 03:09:48,253 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) [2024-09-13 03:09:48,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:48,567 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-13 03:09:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 03:09:48,568 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 [2024-09-13 03:09:48,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:48,569 INFO L225 Difference]: With dead ends: 34 [2024-09-13 03:09:48,569 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 03:09:48,570 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 [2024-09-13 03:09:48,571 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:48,571 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 184 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:09:48,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 03:09:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-13 03:09:48,577 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) [2024-09-13 03:09:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-09-13 03:09:48,578 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 37 [2024-09-13 03:09:48,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:48,578 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-09-13 03:09:48,579 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) [2024-09-13 03:09:48,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-09-13 03:09:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-13 03:09:48,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:48,580 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] [2024-09-13 03:09:48,596 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 03:09:48,780 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 [2024-09-13 03:09:48,781 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:48,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1355077807, now seen corresponding path program 3 times [2024-09-13 03:09:48,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:48,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986522798] [2024-09-13 03:09:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:48,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:48,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:48,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:09:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:49,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:49,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 03:09:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:49,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:49,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:49,356 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-13 03:09:49,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:49,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986522798] [2024-09-13 03:09:49,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986522798] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:49,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556057182] [2024-09-13 03:09:49,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:09:49,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:49,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:49,360 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:49,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 03:09:49,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-13 03:09:49,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:49,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-13 03:09:49,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-13 03:09:49,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 03:09:50,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556057182] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:50,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:50,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 18] total 39 [2024-09-13 03:09:50,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130831125] [2024-09-13 03:09:50,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:50,464 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-13 03:09:50,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-13 03:09:50,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1366, Unknown=0, NotChecked=0, Total=1482 [2024-09-13 03:09:50,466 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) [2024-09-13 03:09:51,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:51,235 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-09-13 03:09:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-13 03:09:51,235 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 [2024-09-13 03:09:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:51,237 INFO L225 Difference]: With dead ends: 48 [2024-09-13 03:09:51,237 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 03:09:51,239 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=326, Invalid=2866, Unknown=0, NotChecked=0, Total=3192 [2024-09-13 03:09:51,239 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:51,239 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 283 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 03:09:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 03:09:51,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-09-13 03:09:51,249 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) [2024-09-13 03:09:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-09-13 03:09:51,250 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 44 [2024-09-13 03:09:51,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:51,250 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-09-13 03:09:51,250 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) [2024-09-13 03:09:51,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-09-13 03:09:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-13 03:09:51,252 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:51,252 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] [2024-09-13 03:09:51,269 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 03:09:51,453 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 [2024-09-13 03:09:51,453 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:51,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:51,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1628773349, now seen corresponding path program 4 times [2024-09-13 03:09:51,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:51,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783984243] [2024-09-13 03:09:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:51,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:09:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:09:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-13 03:09:51,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:51,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783984243] [2024-09-13 03:09:51,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783984243] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:51,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057687243] [2024-09-13 03:09:51,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:09:51,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:51,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:51,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:51,939 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 03:09:51,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:09:51,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:51,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-13 03:09:51,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 03:09:52,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 03:09:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057687243] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:53,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:53,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 20] total 46 [2024-09-13 03:09:53,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33756931] [2024-09-13 03:09:53,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:53,244 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-13 03:09:53,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-13 03:09:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2024-09-13 03:09:53,246 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) [2024-09-13 03:09:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:53,969 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2024-09-13 03:09:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-13 03:09:53,969 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 [2024-09-13 03:09:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:53,970 INFO L225 Difference]: With dead ends: 52 [2024-09-13 03:09:53,970 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 03:09:53,972 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 [2024-09-13 03:09:53,972 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:53,973 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 267 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 03:09:53,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 03:09:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-09-13 03:09:53,980 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) [2024-09-13 03:09:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-09-13 03:09:53,981 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 44 [2024-09-13 03:09:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:53,981 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-09-13 03:09:53,982 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) [2024-09-13 03:09:53,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-09-13 03:09:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-13 03:09:53,983 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:53,983 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] [2024-09-13 03:09:53,995 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 03:09:54,184 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 [2024-09-13 03:09:54,184 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:54,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1170996589, now seen corresponding path program 5 times [2024-09-13 03:09:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:54,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118078871] [2024-09-13 03:09:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:54,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:54,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:54,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:09:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:54,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:54,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 03:09:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:54,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:54,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:54,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-13 03:09:54,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:54,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118078871] [2024-09-13 03:09:54,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118078871] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:54,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799694825] [2024-09-13 03:09:54,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:09:54,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:54,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:54,738 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:54,741 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 03:09:54,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-13 03:09:54,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:54,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-13 03:09:54,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 03:09:55,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-13 03:09:56,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799694825] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:56,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 23] total 54 [2024-09-13 03:09:56,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785197659] [2024-09-13 03:09:56,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:56,418 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-13 03:09:56,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-13 03:09:56,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2670, Unknown=0, NotChecked=0, Total=2862 [2024-09-13 03:09:56,421 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) [2024-09-13 03:09:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:57,502 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2024-09-13 03:09:57,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-13 03:09:57,503 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 [2024-09-13 03:09:57,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:57,506 INFO L225 Difference]: With dead ends: 71 [2024-09-13 03:09:57,507 INFO L226 Difference]: Without dead ends: 65 [2024-09-13 03:09:57,508 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=523, Invalid=5027, Unknown=0, NotChecked=0, Total=5550 [2024-09-13 03:09:57,509 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:57,509 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 373 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 03:09:57,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-13 03:09:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2024-09-13 03:09:57,529 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) [2024-09-13 03:09:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2024-09-13 03:09:57,530 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 51 [2024-09-13 03:09:57,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:57,531 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2024-09-13 03:09:57,531 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) [2024-09-13 03:09:57,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2024-09-13 03:09:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-13 03:09:57,532 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:57,532 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] [2024-09-13 03:09:57,549 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 03:09:57,736 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 [2024-09-13 03:09:57,737 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:57,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:57,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1806313405, now seen corresponding path program 6 times [2024-09-13 03:09:57,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:57,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160627964] [2024-09-13 03:09:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:57,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:57,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:58,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:09:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:58,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:58,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:58,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:58,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-13 03:09:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:58,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:58,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:58,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:58,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-13 03:09:58,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:58,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160627964] [2024-09-13 03:09:58,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160627964] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:58,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619526756] [2024-09-13 03:09:58,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:09:58,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:58,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:58,791 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:58,793 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 03:09:58,856 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-13 03:09:58,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:58,860 WARN L260 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-09-13 03:09:58,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-13 03:09:59,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 29 proven. 153 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-13 03:10:01,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619526756] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:01,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:01,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 30] total 61 [2024-09-13 03:10:01,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937764892] [2024-09-13 03:10:01,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:01,353 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-13 03:10:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:01,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-13 03:10:01,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3432, Unknown=0, NotChecked=0, Total=3660 [2024-09-13 03:10:01,358 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) [2024-09-13 03:10:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:02,594 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2024-09-13 03:10:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-13 03:10:02,594 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 [2024-09-13 03:10:02,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:02,596 INFO L225 Difference]: With dead ends: 81 [2024-09-13 03:10:02,597 INFO L226 Difference]: Without dead ends: 71 [2024-09-13 03:10:02,599 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 [2024-09-13 03:10:02,599 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:02,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 504 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-13 03:10:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-13 03:10:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2024-09-13 03:10:02,618 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) [2024-09-13 03:10:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-09-13 03:10:02,619 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 72 [2024-09-13 03:10:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:02,620 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-09-13 03:10:02,620 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) [2024-09-13 03:10:02,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-09-13 03:10:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-13 03:10:02,622 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:02,622 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] [2024-09-13 03:10:02,635 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 03:10:02,825 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 [2024-09-13 03:10:02,825 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:02,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash 240502641, now seen corresponding path program 7 times [2024-09-13 03:10:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:02,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853014382] [2024-09-13 03:10:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:02,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:10:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:10:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:04,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-09-13 03:10:04,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853014382] [2024-09-13 03:10:04,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853014382] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:04,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057208455] [2024-09-13 03:10:04,136 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:10:04,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:04,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:04,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:10:04,140 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 03:10:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:04,210 WARN L260 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-13 03:10:04,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 5 proven. 163 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-09-13 03:10:04,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 38 proven. 250 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-13 03:10:07,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057208455] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:07,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:07,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 36] total 72 [2024-09-13 03:10:07,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489991643] [2024-09-13 03:10:07,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:07,057 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-13 03:10:07,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-13 03:10:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=4838, Unknown=0, NotChecked=0, Total=5112 [2024-09-13 03:10:07,060 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) [2024-09-13 03:10:09,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:09,101 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2024-09-13 03:10:09,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-13 03:10:09,102 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 [2024-09-13 03:10:09,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:09,103 INFO L225 Difference]: With dead ends: 87 [2024-09-13 03:10:09,103 INFO L226 Difference]: Without dead ends: 74 [2024-09-13 03:10:09,110 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2049 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=813, Invalid=9287, Unknown=0, NotChecked=0, Total=10100 [2024-09-13 03:10:09,111 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 71 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:09,111 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 779 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-13 03:10:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-13 03:10:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2024-09-13 03:10:09,135 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) [2024-09-13 03:10:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2024-09-13 03:10:09,137 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 86 [2024-09-13 03:10:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:09,138 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2024-09-13 03:10:09,138 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) [2024-09-13 03:10:09,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2024-09-13 03:10:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-13 03:10:09,140 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:09,140 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] [2024-09-13 03:10:09,155 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 03:10:09,343 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 [2024-09-13 03:10:09,343 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:09,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash -879054875, now seen corresponding path program 8 times [2024-09-13 03:10:09,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:09,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298874726] [2024-09-13 03:10:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:09,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:09,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:09,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:10:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:09,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:09,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:09,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:10:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:09,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:10,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:10,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:10,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:10,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:10,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 28 proven. 146 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-09-13 03:10:10,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298874726] [2024-09-13 03:10:10,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298874726] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904235177] [2024-09-13 03:10:10,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:10:10,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:10,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:10,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:10:10,624 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 03:10:10,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:10:10,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:10:10,695 WARN L260 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-13 03:10:10,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 6 proven. 136 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-09-13 03:10:11,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-13 03:10:12,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904235177] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:12,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:12,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 33] total 68 [2024-09-13 03:10:12,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542763733] [2024-09-13 03:10:12,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:12,972 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-13 03:10:12,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:12,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-13 03:10:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4308, Unknown=0, NotChecked=0, Total=4556 [2024-09-13 03:10:12,975 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) [2024-09-13 03:10:14,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:14,471 INFO L93 Difference]: Finished difference Result 84 states and 117 transitions. [2024-09-13 03:10:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-13 03:10:14,472 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 [2024-09-13 03:10:14,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:14,473 INFO L225 Difference]: With dead ends: 84 [2024-09-13 03:10:14,473 INFO L226 Difference]: Without dead ends: 77 [2024-09-13 03:10:14,476 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=655, Invalid=7901, Unknown=0, NotChecked=0, Total=8556 [2024-09-13 03:10:14,476 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:14,477 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 683 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-13 03:10:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-13 03:10:14,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2024-09-13 03:10:14,497 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) [2024-09-13 03:10:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 89 transitions. [2024-09-13 03:10:14,498 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 89 transitions. Word has length 79 [2024-09-13 03:10:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:14,498 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 89 transitions. [2024-09-13 03:10:14,499 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) [2024-09-13 03:10:14,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 89 transitions. [2024-09-13 03:10:14,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-13 03:10:14,500 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:14,500 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] [2024-09-13 03:10:14,515 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 03:10:14,704 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 [2024-09-13 03:10:14,704 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:14,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1998053917, now seen corresponding path program 9 times [2024-09-13 03:10:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:14,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062789071] [2024-09-13 03:10:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:15,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:15,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:10:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:15,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:15,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:15,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:10:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:15,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:15,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:15,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:15,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:15,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:16,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:16,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-09-13 03:10:16,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:16,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062789071] [2024-09-13 03:10:16,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062789071] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:16,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432111858] [2024-09-13 03:10:16,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:10:16,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:16,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:16,222 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:10:16,224 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 03:10:16,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-09-13 03:10:16,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:10:16,293 WARN L260 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-13 03:10:16,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 7 proven. 167 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-09-13 03:10:17,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-13 03:10:19,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432111858] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:19,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:19,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 36] total 74 [2024-09-13 03:10:19,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199603880] [2024-09-13 03:10:19,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:19,139 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-13 03:10:19,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:19,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-13 03:10:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=5132, Unknown=0, NotChecked=0, Total=5402 [2024-09-13 03:10:19,142 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) [2024-09-13 03:10:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:20,601 INFO L93 Difference]: Finished difference Result 87 states and 122 transitions. [2024-09-13 03:10:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-13 03:10:20,601 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 [2024-09-13 03:10:20,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:20,602 INFO L225 Difference]: With dead ends: 87 [2024-09-13 03:10:20,602 INFO L226 Difference]: Without dead ends: 80 [2024-09-13 03:10:20,604 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=736, Invalid=9364, Unknown=0, NotChecked=0, Total=10100 [2024-09-13 03:10:20,604 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 94 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:20,604 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 612 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-13 03:10:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-13 03:10:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2024-09-13 03:10:20,641 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) [2024-09-13 03:10:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2024-09-13 03:10:20,642 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 86 [2024-09-13 03:10:20,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:20,642 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2024-09-13 03:10:20,643 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) [2024-09-13 03:10:20,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2024-09-13 03:10:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-13 03:10:20,645 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:20,646 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] [2024-09-13 03:10:20,663 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 03:10:20,846 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 [2024-09-13 03:10:20,846 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:20,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:20,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1103674431, now seen corresponding path program 10 times [2024-09-13 03:10:20,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:20,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822958211] [2024-09-13 03:10:20,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:20,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:10:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-13 03:10:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 26 proven. 148 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-09-13 03:10:21,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:21,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822958211] [2024-09-13 03:10:21,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822958211] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:21,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801992465] [2024-09-13 03:10:21,865 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:10:21,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:21,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:21,867 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) [2024-09-13 03:10:21,868 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 03:10:21,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:10:21,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:10:21,950 WARN L260 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-13 03:10:21,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 3 proven. 136 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-09-13 03:10:22,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-13 03:10:24,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801992465] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:24,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:24,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 33] total 69 [2024-09-13 03:10:24,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239103850] [2024-09-13 03:10:24,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:24,555 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-13 03:10:24,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:24,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-13 03:10:24,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4429, Unknown=0, NotChecked=0, Total=4692 [2024-09-13 03:10:24,557 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) [2024-09-13 03:10:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:25,865 INFO L93 Difference]: Finished difference Result 91 states and 127 transitions. [2024-09-13 03:10:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-13 03:10:25,865 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 [2024-09-13 03:10:25,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:25,866 INFO L225 Difference]: With dead ends: 91 [2024-09-13 03:10:25,867 INFO L226 Difference]: Without dead ends: 78 [2024-09-13 03:10:25,868 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1857 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=757, Invalid=8173, Unknown=0, NotChecked=0, Total=8930 [2024-09-13 03:10:25,868 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 55 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:25,868 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 560 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-13 03:10:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-13 03:10:25,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-09-13 03:10:25,887 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) [2024-09-13 03:10:25,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2024-09-13 03:10:25,888 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 79 [2024-09-13 03:10:25,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:25,889 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2024-09-13 03:10:25,889 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) [2024-09-13 03:10:25,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:25,889 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2024-09-13 03:10:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-13 03:10:25,890 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:25,890 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] [2024-09-13 03:10:25,904 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-13 03:10:26,091 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 [2024-09-13 03:10:26,091 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:26,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1404959985, now seen corresponding path program 11 times [2024-09-13 03:10:26,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:26,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641902345] [2024-09-13 03:10:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:26,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:26,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:26,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:10:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:26,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:26,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:26,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:10:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:26,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:26,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:27,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:27,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:27,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:27,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:27,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:27,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 213 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-09-13 03:10:27,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:27,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641902345] [2024-09-13 03:10:27,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641902345] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:27,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344799131] [2024-09-13 03:10:27,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:10:27,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:27,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:27,662 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) [2024-09-13 03:10:27,663 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 03:10:27,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-09-13 03:10:27,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:10:27,738 WARN L260 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-09-13 03:10:27,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 17 proven. 193 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-09-13 03:10:28,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 315 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-13 03:10:30,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344799131] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:30,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:30,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26, 39] total 80 [2024-09-13 03:10:30,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744500579] [2024-09-13 03:10:30,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:30,783 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-13 03:10:30,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-13 03:10:30,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=6028, Unknown=0, NotChecked=0, Total=6320 [2024-09-13 03:10:30,785 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) [2024-09-13 03:10:32,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:32,560 INFO L93 Difference]: Finished difference Result 88 states and 124 transitions. [2024-09-13 03:10:32,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-13 03:10:32,560 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 [2024-09-13 03:10:32,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:32,562 INFO L225 Difference]: With dead ends: 88 [2024-09-13 03:10:32,562 INFO L226 Difference]: Without dead ends: 81 [2024-09-13 03:10:32,563 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=817, Invalid=10739, Unknown=0, NotChecked=0, Total=11556 [2024-09-13 03:10:32,564 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 [2024-09-13 03:10:32,564 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] [2024-09-13 03:10:32,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-13 03:10:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2024-09-13 03:10:32,581 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) [2024-09-13 03:10:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2024-09-13 03:10:32,582 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 93 [2024-09-13 03:10:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:32,582 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2024-09-13 03:10:32,582 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) [2024-09-13 03:10:32,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2024-09-13 03:10:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-13 03:10:32,584 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:32,584 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] [2024-09-13 03:10:32,602 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-13 03:10:32,785 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 [2024-09-13 03:10:32,785 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:32,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:32,785 INFO L85 PathProgramCache]: Analyzing trace with hash -307076237, now seen corresponding path program 12 times [2024-09-13 03:10:32,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:32,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625092112] [2024-09-13 03:10:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:32,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:10:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:10:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 40 proven. 251 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-09-13 03:10:34,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625092112] [2024-09-13 03:10:34,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625092112] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41845317] [2024-09-13 03:10:34,453 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:10:34,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:34,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:34,455 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) [2024-09-13 03:10:34,457 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-13 03:10:34,544 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-13 03:10:34,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:10:34,547 WARN L260 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 157 conjuncts are in the unsatisfiable core [2024-09-13 03:10:34,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 19 proven. 229 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-09-13 03:10:35,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 39 proven. 380 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-13 03:10:38,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41845317] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:38,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:38,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28, 42] total 86 [2024-09-13 03:10:38,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741622217] [2024-09-13 03:10:38,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:38,166 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-13 03:10:38,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:38,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-13 03:10:38,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=6996, Unknown=0, NotChecked=0, Total=7310 [2024-09-13 03:10:38,168 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) [2024-09-13 03:10:40,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:40,085 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-09-13 03:10:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-13 03:10:40,086 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 [2024-09-13 03:10:40,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:40,087 INFO L225 Difference]: With dead ends: 91 [2024-09-13 03:10:40,087 INFO L226 Difference]: Without dead ends: 84 [2024-09-13 03:10:40,088 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2812 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=906, Invalid=12434, Unknown=0, NotChecked=0, Total=13340 [2024-09-13 03:10:40,089 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 [2024-09-13 03:10:40,089 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] [2024-09-13 03:10:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-13 03:10:40,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2024-09-13 03:10:40,112 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) [2024-09-13 03:10:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2024-09-13 03:10:40,113 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 100 [2024-09-13 03:10:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:40,113 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2024-09-13 03:10:40,113 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) [2024-09-13 03:10:40,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2024-09-13 03:10:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-09-13 03:10:40,114 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:40,114 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] [2024-09-13 03:10:40,127 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-13 03:10:40,314 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 [2024-09-13 03:10:40,315 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:40,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:40,315 INFO L85 PathProgramCache]: Analyzing trace with hash 179440229, now seen corresponding path program 13 times [2024-09-13 03:10:40,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:40,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825094004] [2024-09-13 03:10:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:40,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:40,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:40,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:10:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:40,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:41,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:41,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:41,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:41,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:41,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:41,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 03:10:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:41,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:41,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:42,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:42,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:42,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:42,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:42,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:42,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:42,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:43,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 60 proven. 486 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-09-13 03:10:43,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:43,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825094004] [2024-09-13 03:10:43,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825094004] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:43,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289257094] [2024-09-13 03:10:43,069 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:10:43,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:43,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:43,071 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) [2024-09-13 03:10:43,072 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-13 03:10:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:43,167 WARN L260 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-09-13 03:10:43,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 10 proven. 460 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2024-09-13 03:10:44,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 65 proven. 783 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-13 03:10:49,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289257094] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:49,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:49,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 30, 57] total 112 [2024-09-13 03:10:49,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704289205] [2024-09-13 03:10:49,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:49,391 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-09-13 03:10:49,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:49,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-09-13 03:10:49,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=12000, Unknown=0, NotChecked=0, Total=12432 [2024-09-13 03:10:49,393 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) [2024-09-13 03:10:52,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:52,873 INFO L93 Difference]: Finished difference Result 103 states and 152 transitions. [2024-09-13 03:10:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-13 03:10:52,873 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 [2024-09-13 03:10:52,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:52,875 INFO L225 Difference]: With dead ends: 103 [2024-09-13 03:10:52,875 INFO L226 Difference]: Without dead ends: 87 [2024-09-13 03:10:52,877 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 [2024-09-13 03:10:52,878 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 146 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 4970 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 5138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 4970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:52,878 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1322 Invalid, 5138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 4970 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-13 03:10:52,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-13 03:10:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2024-09-13 03:10:52,902 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) [2024-09-13 03:10:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 108 transitions. [2024-09-13 03:10:52,903 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 108 transitions. Word has length 135 [2024-09-13 03:10:52,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:52,904 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 108 transitions. [2024-09-13 03:10:52,904 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) [2024-09-13 03:10:52,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:52,905 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 108 transitions. [2024-09-13 03:10:52,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-09-13 03:10:52,905 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:52,906 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] [2024-09-13 03:10:52,924 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-13 03:10:53,106 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 [2024-09-13 03:10:53,107 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:53,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:53,107 INFO L85 PathProgramCache]: Analyzing trace with hash -395770423, now seen corresponding path program 14 times [2024-09-13 03:10:53,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:53,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466646460] [2024-09-13 03:10:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:53,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:53,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:53,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:10:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:53,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:53,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:53,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:10:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:53,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:54,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:54,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:54,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:54,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:54,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:55,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:55,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:55,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:55,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:55,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 48 proven. 336 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-09-13 03:10:55,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466646460] [2024-09-13 03:10:55,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466646460] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668322710] [2024-09-13 03:10:55,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:10:55,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:55,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:55,529 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) [2024-09-13 03:10:55,531 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-13 03:10:55,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:10:55,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:10:55,639 WARN L260 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-09-13 03:10:55,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 11 proven. 321 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-13 03:10:56,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:11:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 44 proven. 528 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-09-13 03:11:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668322710] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:11:00,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:11:00,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 48] total 98 [2024-09-13 03:11:00,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793466276] [2024-09-13 03:11:00,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:11:00,395 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-13 03:11:00,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:11:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-13 03:11:00,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=9148, Unknown=0, NotChecked=0, Total=9506 [2024-09-13 03:11:00,397 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) [2024-09-13 03:11:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:11:03,033 INFO L93 Difference]: Finished difference Result 97 states and 139 transitions. [2024-09-13 03:11:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-13 03:11:03,034 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 [2024-09-13 03:11:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:11:03,035 INFO L225 Difference]: With dead ends: 97 [2024-09-13 03:11:03,035 INFO L226 Difference]: Without dead ends: 90 [2024-09-13 03:11:03,036 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3673 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1096, Invalid=16196, Unknown=0, NotChecked=0, Total=17292 [2024-09-13 03:11:03,037 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 165 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 3943 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2024-09-13 03:11:03,037 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1363 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 3943 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-13 03:11:03,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-13 03:11:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2024-09-13 03:11:03,062 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) [2024-09-13 03:11:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 113 transitions. [2024-09-13 03:11:03,063 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 113 transitions. Word has length 114 [2024-09-13 03:11:03,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:11:03,063 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 113 transitions. [2024-09-13 03:11:03,064 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) [2024-09-13 03:11:03,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 113 transitions. [2024-09-13 03:11:03,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-13 03:11:03,065 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:11:03,065 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] [2024-09-13 03:11:03,081 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-13 03:11:03,266 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 [2024-09-13 03:11:03,266 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:11:03,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:03,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1084266083, now seen corresponding path program 15 times [2024-09-13 03:11:03,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:11:03,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551606896] [2024-09-13 03:11:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:11:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:11:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:03,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:11:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:03,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:11:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:03,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:03,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:03,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:11:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:04,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:04,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:04,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:04,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:04,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:05,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:05,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:05,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:05,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:05,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:05,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:05,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 52 proven. 383 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-09-13 03:11:05,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:11:05,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551606896] [2024-09-13 03:11:05,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551606896] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:11:05,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563201346] [2024-09-13 03:11:05,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:11:05,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:11:05,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:11:05,748 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) [2024-09-13 03:11:05,752 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-13 03:11:05,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-13 03:11:05,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:11:05,866 WARN L260 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-09-13 03:11:05,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:11:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 12 proven. 367 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2024-09-13 03:11:07,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:11:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 47 proven. 611 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-13 03:11:11,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563201346] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:11:11,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:11:11,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 34, 51] total 104 [2024-09-13 03:11:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430224588] [2024-09-13 03:11:11,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:11:11,435 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-13 03:11:11,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:11:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-13 03:11:11,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=10332, Unknown=0, NotChecked=0, Total=10712 [2024-09-13 03:11:11,438 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) [2024-09-13 03:11:14,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:11:14,209 INFO L93 Difference]: Finished difference Result 100 states and 144 transitions. [2024-09-13 03:11:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-13 03:11:14,210 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 [2024-09-13 03:11:14,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:11:14,211 INFO L225 Difference]: With dead ends: 100 [2024-09-13 03:11:14,211 INFO L226 Difference]: Without dead ends: 93 [2024-09-13 03:11:14,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4142 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1197, Invalid=18263, Unknown=0, NotChecked=0, Total=19460 [2024-09-13 03:11:14,214 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 [2024-09-13 03:11:14,214 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] [2024-09-13 03:11:14,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-13 03:11:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2024-09-13 03:11:14,240 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) [2024-09-13 03:11:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2024-09-13 03:11:14,241 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 121 [2024-09-13 03:11:14,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:11:14,242 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2024-09-13 03:11:14,242 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) [2024-09-13 03:11:14,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2024-09-13 03:11:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-13 03:11:14,243 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:11:14,243 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] [2024-09-13 03:11:14,255 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-13 03:11:14,443 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 [2024-09-13 03:11:14,444 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:11:14,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:14,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1846777569, now seen corresponding path program 16 times [2024-09-13 03:11:14,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:11:14,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860933621] [2024-09-13 03:11:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:11:14,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:11:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:14,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:11:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:14,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:11:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:14,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:14,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:14,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:11:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:15,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:15,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:15,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:15,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 56 proven. 433 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-09-13 03:11:17,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:11:17,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860933621] [2024-09-13 03:11:17,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860933621] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:11:17,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653220601] [2024-09-13 03:11:17,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:11:17,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:11:17,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:11:17,125 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) [2024-09-13 03:11:17,126 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-13 03:11:17,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:11:17,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:11:17,242 WARN L260 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 205 conjuncts are in the unsatisfiable core [2024-09-13 03:11:17,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:11:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 13 proven. 416 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-09-13 03:11:18,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:11:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 50 proven. 700 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-13 03:11:23,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653220601] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:11:23,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:11:23,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 36, 54] total 110 [2024-09-13 03:11:23,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091104486] [2024-09-13 03:11:23,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:11:23,334 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-09-13 03:11:23,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:11:23,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-09-13 03:11:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=11588, Unknown=0, NotChecked=0, Total=11990 [2024-09-13 03:11:23,337 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) [2024-09-13 03:11:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:11:26,343 INFO L93 Difference]: Finished difference Result 103 states and 149 transitions. [2024-09-13 03:11:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-13 03:11:26,343 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 [2024-09-13 03:11:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:11:26,345 INFO L225 Difference]: With dead ends: 103 [2024-09-13 03:11:26,345 INFO L226 Difference]: Without dead ends: 96 [2024-09-13 03:11:26,347 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4639 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1302, Invalid=20454, Unknown=0, NotChecked=0, Total=21756 [2024-09-13 03:11:26,348 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 215 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 4038 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 4286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 4038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-13 03:11:26,348 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1299 Invalid, 4286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 4038 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-13 03:11:26,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-13 03:11:26,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2024-09-13 03:11:26,391 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) [2024-09-13 03:11:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2024-09-13 03:11:26,392 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 128 [2024-09-13 03:11:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:11:26,392 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2024-09-13 03:11:26,392 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) [2024-09-13 03:11:26,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:26,393 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2024-09-13 03:11:26,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-13 03:11:26,394 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:11:26,394 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] [2024-09-13 03:11:26,407 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-13 03:11:26,594 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 [2024-09-13 03:11:26,594 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:11:26,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:26,595 INFO L85 PathProgramCache]: Analyzing trace with hash -709306135, now seen corresponding path program 17 times [2024-09-13 03:11:26,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:11:26,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340556012] [2024-09-13 03:11:26,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:11:26,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:11:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:27,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:11:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:27,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:11:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:27,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:27,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:27,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:27,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:27,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:27,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:27,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:27,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-13 03:11:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:28,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:28,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:28,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:29,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:29,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:29,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:30,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:30,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:30,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:30,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:30,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:30,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:31,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:31,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 80 proven. 796 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2024-09-13 03:11:31,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:11:31,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340556012] [2024-09-13 03:11:31,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340556012] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:11:31,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474361573] [2024-09-13 03:11:31,213 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:11:31,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:11:31,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:11:31,215 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) [2024-09-13 03:11:31,216 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-13 03:11:31,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-13 03:11:31,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:11:31,377 WARN L260 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 277 conjuncts are in the unsatisfiable core [2024-09-13 03:11:31,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:11:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 14 proven. 763 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2024-09-13 03:11:33,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:11:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 83 proven. 1345 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-09-13 03:11:41,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474361573] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:11:41,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:11:41,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 38, 72] total 141 [2024-09-13 03:11:41,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3458690] [2024-09-13 03:11:41,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:11:41,149 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-09-13 03:11:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:11:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-09-13 03:11:41,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=19196, Unknown=0, NotChecked=0, Total=19740 [2024-09-13 03:11:41,152 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) [2024-09-13 03:11:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:11:46,409 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2024-09-13 03:11:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-13 03:11:46,410 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 [2024-09-13 03:11:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:11:46,412 INFO L225 Difference]: With dead ends: 119 [2024-09-13 03:11:46,412 INFO L226 Difference]: Without dead ends: 99 [2024-09-13 03:11:46,414 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7651 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=2288, Invalid=35154, Unknown=0, NotChecked=0, Total=37442 [2024-09-13 03:11:46,415 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 261 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 6518 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 6937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 6518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-09-13 03:11:46,416 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1610 Invalid, 6937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 6518 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-09-13 03:11:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-13 03:11:46,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2024-09-13 03:11:46,450 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) [2024-09-13 03:11:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 128 transitions. [2024-09-13 03:11:46,451 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 128 transitions. Word has length 170 [2024-09-13 03:11:46,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:11:46,451 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 128 transitions. [2024-09-13 03:11:46,452 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) [2024-09-13 03:11:46,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:46,452 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 128 transitions. [2024-09-13 03:11:46,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-13 03:11:46,453 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:11:46,453 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] [2024-09-13 03:11:46,470 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-13 03:11:46,653 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 [2024-09-13 03:11:46,653 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:11:46,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1661807989, now seen corresponding path program 18 times [2024-09-13 03:11:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:11:46,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117469864] [2024-09-13 03:11:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:11:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:11:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:47,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:11:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:47,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:11:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:47,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:47,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:47,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:11:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:47,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:48,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:48,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:48,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:49,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:49,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:49,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:49,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:49,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:49,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:50,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:50,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:50,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:50,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:50,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 64 proven. 542 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2024-09-13 03:11:50,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:11:50,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117469864] [2024-09-13 03:11:50,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117469864] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:11:50,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018568953] [2024-09-13 03:11:50,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:11:50,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:11:50,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:11:50,606 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) [2024-09-13 03:11:50,607 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-13 03:11:50,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-13 03:11:50,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:11:50,773 WARN L260 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 228 conjuncts are in the unsatisfiable core [2024-09-13 03:11:50,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:11:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 36 proven. 538 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-09-13 03:11:52,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:11:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 57 proven. 899 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-09-13 03:11:59,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018568953] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:11:59,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:11:59,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 44, 64] total 127 [2024-09-13 03:11:59,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616773755] [2024-09-13 03:11:59,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:11:59,224 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2024-09-13 03:11:59,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:11:59,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2024-09-13 03:11:59,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=15519, Unknown=0, NotChecked=0, Total=16002 [2024-09-13 03:11:59,226 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) [2024-09-13 03:12:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:12:03,373 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2024-09-13 03:12:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-13 03:12:03,374 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 [2024-09-13 03:12:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:12:03,376 INFO L225 Difference]: With dead ends: 109 [2024-09-13 03:12:03,376 INFO L226 Difference]: Without dead ends: 102 [2024-09-13 03:12:03,378 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6169 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1702, Invalid=26690, Unknown=0, NotChecked=0, Total=28392 [2024-09-13 03:12:03,379 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 323 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 5087 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 5543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 5087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:12:03,379 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1673 Invalid, 5543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 5087 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-09-13 03:12:03,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-13 03:12:03,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2024-09-13 03:12:03,415 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) [2024-09-13 03:12:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2024-09-13 03:12:03,416 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 142 [2024-09-13 03:12:03,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:12:03,417 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2024-09-13 03:12:03,417 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) [2024-09-13 03:12:03,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:12:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2024-09-13 03:12:03,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-09-13 03:12:03,419 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:12:03,419 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] [2024-09-13 03:12:03,437 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-13 03:12:03,619 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 [2024-09-13 03:12:03,620 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:12:03,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:12:03,620 INFO L85 PathProgramCache]: Analyzing trace with hash 882713721, now seen corresponding path program 19 times [2024-09-13 03:12:03,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:12:03,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127351824] [2024-09-13 03:12:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:12:03,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:12:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:04,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:12:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:04,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:12:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:04,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:04,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:04,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:04,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:04,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:04,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:04,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:04,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:05,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-13 03:12:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:05,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:06,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:06,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:06,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:07,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:07,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:07,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:07,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:08,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:08,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:08,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:08,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:08,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:08,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:08,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:08,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 92 proven. 1018 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2024-09-13 03:12:08,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:12:08,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127351824] [2024-09-13 03:12:08,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127351824] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:12:08,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955144802] [2024-09-13 03:12:08,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:12:08,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:12:08,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:12:08,960 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) [2024-09-13 03:12:08,961 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-13 03:12:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:09,170 WARN L260 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 313 conjuncts are in the unsatisfiable core [2024-09-13 03:12:09,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:12:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 16 proven. 980 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2024-09-13 03:12:11,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:12:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 95 proven. 1753 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-09-13 03:12:21,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955144802] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:12:21,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:12:21,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 42, 81] total 158 [2024-09-13 03:12:21,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625193481] [2024-09-13 03:12:21,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:12:21,370 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2024-09-13 03:12:21,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:12:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2024-09-13 03:12:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=24194, Unknown=0, NotChecked=0, Total=24806 [2024-09-13 03:12:21,373 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) [2024-09-13 03:12:28,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:12:28,690 INFO L93 Difference]: Finished difference Result 127 states and 194 transitions. [2024-09-13 03:12:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-13 03:12:28,691 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 [2024-09-13 03:12:28,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:12:28,692 INFO L225 Difference]: With dead ends: 127 [2024-09-13 03:12:28,693 INFO L226 Difference]: Without dead ends: 105 [2024-09-13 03:12:28,697 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9583 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=2736, Invalid=44136, Unknown=0, NotChecked=0, Total=46872 [2024-09-13 03:12:28,697 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 340 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 9499 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 10018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 9499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:12:28,698 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2291 Invalid, 10018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 9499 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-09-13 03:12:28,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-13 03:12:28,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2024-09-13 03:12:28,745 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) [2024-09-13 03:12:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2024-09-13 03:12:28,746 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 138 transitions. Word has length 191 [2024-09-13 03:12:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:12:28,746 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 138 transitions. [2024-09-13 03:12:28,747 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) [2024-09-13 03:12:28,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:12:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 138 transitions. [2024-09-13 03:12:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-13 03:12:28,748 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:12:28,748 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] [2024-09-13 03:12:28,767 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-13 03:12:28,952 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 [2024-09-13 03:12:28,952 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:12:28,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:12:28,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1086059211, now seen corresponding path program 20 times [2024-09-13 03:12:28,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:12:28,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825298821] [2024-09-13 03:12:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:12:28,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:12:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:29,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:12:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:29,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:12:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:29,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:29,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:29,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:12:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:30,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:30,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:30,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:31,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:31,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:31,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:31,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:32,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:32,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:32,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:32,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:33,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:33,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:33,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:33,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:33,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:33,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 72 proven. 663 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-09-13 03:12:33,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:12:33,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825298821] [2024-09-13 03:12:33,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825298821] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:12:33,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601828410] [2024-09-13 03:12:33,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:12:33,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:12:33,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:12:33,599 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) [2024-09-13 03:12:33,600 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-13 03:12:33,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:12:33,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:12:33,791 WARN L260 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 253 conjuncts are in the unsatisfiable core [2024-09-13 03:12:33,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:12:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 17 proven. 642 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-09-13 03:12:35,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:12:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 62 proven. 1116 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-09-13 03:12:43,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601828410] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:12:43,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:12:43,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 44, 66] total 134 [2024-09-13 03:12:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65963831] [2024-09-13 03:12:43,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:12:43,274 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-13 03:12:43,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:12:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-13 03:12:43,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=17332, Unknown=0, NotChecked=0, Total=17822 [2024-09-13 03:12:43,277 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) [2024-09-13 03:12:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:12:48,316 INFO L93 Difference]: Finished difference Result 115 states and 169 transitions. [2024-09-13 03:12:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-13 03:12:48,316 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 [2024-09-13 03:12:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:12:48,318 INFO L225 Difference]: With dead ends: 115 [2024-09-13 03:12:48,318 INFO L226 Difference]: Without dead ends: 108 [2024-09-13 03:12:48,320 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6907 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1762, Invalid=30458, Unknown=0, NotChecked=0, Total=32220 [2024-09-13 03:12:48,320 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 387 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 6970 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 7269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 6970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:12:48,321 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 2369 Invalid, 7269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 6970 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-09-13 03:12:48,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-13 03:12:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2024-09-13 03:12:48,361 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) [2024-09-13 03:12:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2024-09-13 03:12:48,362 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 156 [2024-09-13 03:12:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:12:48,362 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2024-09-13 03:12:48,362 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) [2024-09-13 03:12:48,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:12:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2024-09-13 03:12:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-13 03:12:48,364 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:12:48,364 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] [2024-09-13 03:12:48,382 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-13 03:12:48,564 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 [2024-09-13 03:12:48,564 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:12:48,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:12:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1019719079, now seen corresponding path program 21 times [2024-09-13 03:12:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:12:48,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586702299] [2024-09-13 03:12:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:12:48,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:12:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:49,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:12:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:49,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:12:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:49,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:49,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:49,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-13 03:12:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:51,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:51,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:52,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:52,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:53,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:53,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:53,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:53,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:54,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:54,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:54,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:54,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:55,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:55,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:55,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:55,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:55,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:55,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 104 proven. 1267 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-09-13 03:12:55,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:12:55,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586702299] [2024-09-13 03:12:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586702299] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:12:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131529941] [2024-09-13 03:12:55,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:12:55,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:12:55,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:12:55,716 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) [2024-09-13 03:12:55,717 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-13 03:12:55,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-09-13 03:12:55,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:12:55,980 WARN L260 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 349 conjuncts are in the unsatisfiable core [2024-09-13 03:12:55,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:12:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 18 proven. 1224 refuted. 0 times theorem prover too weak. 1490 trivial. 0 not checked. [2024-09-13 03:12:58,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:13:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 107 proven. 2215 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-09-13 03:13:11,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131529941] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:13:11,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:13:11,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 46, 90] total 175 [2024-09-13 03:13:11,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532882346] [2024-09-13 03:13:11,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:13:11,182 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-09-13 03:13:11,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:13:11,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-09-13 03:13:11,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=29770, Unknown=0, NotChecked=0, Total=30450 [2024-09-13 03:13:11,186 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) [2024-09-13 03:13:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:13:19,621 INFO L93 Difference]: Finished difference Result 135 states and 208 transitions. [2024-09-13 03:13:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-13 03:13:19,622 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 [2024-09-13 03:13:19,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:13:19,624 INFO L225 Difference]: With dead ends: 135 [2024-09-13 03:13:19,624 INFO L226 Difference]: Without dead ends: 111 [2024-09-13 03:13:19,627 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11734 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=3220, Invalid=54140, Unknown=0, NotChecked=0, Total=57360 [2024-09-13 03:13:19,628 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 513 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 10768 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 11411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 10768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-09-13 03:13:19,628 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 2377 Invalid, 11411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 10768 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-09-13 03:13:19,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-13 03:13:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2024-09-13 03:13:19,668 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) [2024-09-13 03:13:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 148 transitions. [2024-09-13 03:13:19,669 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 148 transitions. Word has length 212 [2024-09-13 03:13:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:13:19,669 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 148 transitions. [2024-09-13 03:13:19,670 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) [2024-09-13 03:13:19,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:13:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 148 transitions. [2024-09-13 03:13:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-13 03:13:19,671 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:13:19,671 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] [2024-09-13 03:13:19,685 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-13 03:13:19,872 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 [2024-09-13 03:13:19,872 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:13:19,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:13:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1710663391, now seen corresponding path program 22 times [2024-09-13 03:13:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:13:19,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802127561] [2024-09-13 03:13:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:13:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:13:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:20,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:13:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:20,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:13:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:20,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:20,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:20,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:13:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:21,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:22,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:22,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:23,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:23,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:23,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:24,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:24,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:24,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:24,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:24,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:25,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:25,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:25,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:25,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:25,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:25,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:25,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:25,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 80 proven. 796 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2024-09-13 03:13:26,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:13:26,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802127561] [2024-09-13 03:13:26,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802127561] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:13:26,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274066969] [2024-09-13 03:13:26,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:13:26,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:13:26,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:13:26,025 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) [2024-09-13 03:13:26,026 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-13 03:13:26,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:13:26,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:13:26,268 WARN L260 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 277 conjuncts are in the unsatisfiable core [2024-09-13 03:13:26,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:13:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 19 proven. 773 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-09-13 03:13:28,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:13:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 68 proven. 1360 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-09-13 03:13:37,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274066969] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:13:37,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:13:37,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 48, 72] total 146 [2024-09-13 03:13:37,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268216669] [2024-09-13 03:13:37,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:13:37,481 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-09-13 03:13:37,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:13:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-09-13 03:13:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=20636, Unknown=0, NotChecked=0, Total=21170 [2024-09-13 03:13:37,483 INFO L87 Difference]: Start difference. First operand 102 states and 148 transitions. Second operand has 146 states, 142 states have (on average 1.3732394366197183) internal successors, (195), 80 states have internal predecessors, (195), 27 states have call successors, (29), 1 states have call predecessors, (29), 46 states have return successors, (68), 67 states have call predecessors, (68), 27 states have call successors, (68) [2024-09-13 03:13:42,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:13:42,585 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2024-09-13 03:13:42,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-13 03:13:42,586 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 142 states have (on average 1.3732394366197183) internal successors, (195), 80 states have internal predecessors, (195), 27 states have call successors, (29), 1 states have call predecessors, (29), 46 states have return successors, (68), 67 states have call predecessors, (68), 27 states have call successors, (68) Word has length 170 [2024-09-13 03:13:42,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:13:42,587 INFO L225 Difference]: With dead ends: 121 [2024-09-13 03:13:42,588 INFO L226 Difference]: Without dead ends: 114 [2024-09-13 03:13:42,591 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8209 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2016, Invalid=36204, Unknown=0, NotChecked=0, Total=38220 [2024-09-13 03:13:42,591 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 407 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 6381 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 6791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 6381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-09-13 03:13:42,591 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1910 Invalid, 6791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 6381 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-09-13 03:13:42,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-09-13 03:13:42,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 105. [2024-09-13 03:13:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 70 states have internal predecessors, (73), 10 states have call successors, (10), 6 states have call predecessors, (10), 25 states have return successors, (70), 28 states have call predecessors, (70), 9 states have call successors, (70) [2024-09-13 03:13:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 153 transitions. [2024-09-13 03:13:42,646 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 153 transitions. Word has length 170 [2024-09-13 03:13:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:13:42,646 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 153 transitions. [2024-09-13 03:13:42,646 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 142 states have (on average 1.3732394366197183) internal successors, (195), 80 states have internal predecessors, (195), 27 states have call successors, (29), 1 states have call predecessors, (29), 46 states have return successors, (68), 67 states have call predecessors, (68), 27 states have call successors, (68) [2024-09-13 03:13:42,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:13:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 153 transitions. [2024-09-13 03:13:42,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-09-13 03:13:42,648 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:13:42,648 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:13:42,662 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-13 03:13:42,848 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-13 03:13:42,848 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:13:42,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:13:42,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2112791197, now seen corresponding path program 23 times [2024-09-13 03:13:42,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:13:42,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825895066] [2024-09-13 03:13:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:13:42,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:13:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:43,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:13:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:43,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:13:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:43,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-13 03:13:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:45,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:46,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:46,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:46,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:47,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:47,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:48,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:48,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:48,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:49,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:49,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:49,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:49,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:49,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:50,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:50,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:50,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:50,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:50,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:50,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 116 proven. 1543 refuted. 0 times theorem prover too weak. 1691 trivial. 0 not checked. [2024-09-13 03:13:50,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:13:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825895066] [2024-09-13 03:13:50,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825895066] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:13:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269047519] [2024-09-13 03:13:50,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:13:50,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:13:50,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:13:50,746 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:13:50,747 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-13 03:13:51,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2024-09-13 03:13:51,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:13:51,047 WARN L260 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 385 conjuncts are in the unsatisfiable core [2024-09-13 03:13:51,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:13:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 20 proven. 1495 refuted. 0 times theorem prover too weak. 1835 trivial. 0 not checked. [2024-09-13 03:13:54,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:14:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 119 proven. 2731 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-09-13 03:14:08,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269047519] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:14:08,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:14:08,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 50, 99] total 192 [2024-09-13 03:14:08,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829750294] [2024-09-13 03:14:08,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:14:08,993 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-09-13 03:14:08,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:14:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-09-13 03:14:08,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=35924, Unknown=0, NotChecked=0, Total=36672 [2024-09-13 03:14:08,997 INFO L87 Difference]: Start difference. First operand 105 states and 153 transitions. Second operand has 192 states, 188 states have (on average 1.377659574468085) internal successors, (259), 107 states have internal predecessors, (259), 36 states have call successors, (38), 1 states have call predecessors, (38), 64 states have return successors, (87), 86 states have call predecessors, (87), 36 states have call successors, (87) [2024-09-13 03:14:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:14:19,403 INFO L93 Difference]: Finished difference Result 143 states and 222 transitions. [2024-09-13 03:14:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-13 03:14:19,403 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 188 states have (on average 1.377659574468085) internal successors, (259), 107 states have internal predecessors, (259), 36 states have call successors, (38), 1 states have call predecessors, (38), 64 states have return successors, (87), 86 states have call predecessors, (87), 36 states have call successors, (87) Word has length 233 [2024-09-13 03:14:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:14:19,405 INFO L225 Difference]: With dead ends: 143 [2024-09-13 03:14:19,405 INFO L226 Difference]: Without dead ends: 117 [2024-09-13 03:14:19,410 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14088 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=3740, Invalid=65166, Unknown=0, NotChecked=0, Total=68906 [2024-09-13 03:14:19,411 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 504 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 13748 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 14256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 13748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-09-13 03:14:19,411 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 3371 Invalid, 14256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 13748 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-09-13 03:14:19,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-09-13 03:14:19,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2024-09-13 03:14:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.056338028169014) internal successors, (75), 72 states have internal predecessors, (75), 10 states have call successors, (10), 6 states have call predecessors, (10), 26 states have return successors, (73), 29 states have call predecessors, (73), 9 states have call successors, (73) [2024-09-13 03:14:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 158 transitions. [2024-09-13 03:14:19,477 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 158 transitions. Word has length 233 [2024-09-13 03:14:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:14:19,478 INFO L474 AbstractCegarLoop]: Abstraction has 108 states and 158 transitions. [2024-09-13 03:14:19,478 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 188 states have (on average 1.377659574468085) internal successors, (259), 107 states have internal predecessors, (259), 36 states have call successors, (38), 1 states have call predecessors, (38), 64 states have return successors, (87), 86 states have call predecessors, (87), 36 states have call successors, (87) [2024-09-13 03:14:19,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:14:19,478 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 158 transitions. [2024-09-13 03:14:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-09-13 03:14:19,480 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:14:19,480 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 32, 32, 32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:14:19,502 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-13 03:14:19,680 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-13 03:14:19,681 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:14:19,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:14:19,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1886669895, now seen corresponding path program 24 times [2024-09-13 03:14:19,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:14:19,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197628756] [2024-09-13 03:14:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:14:19,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:14:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:20,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:14:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:20,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:14:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:20,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:21,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:21,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:21,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:21,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:21,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:21,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:21,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:21,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:21,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:22,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:22,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-13 03:14:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:22,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:23,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:24,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:25,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:25,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:25,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:26,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:26,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:27,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:27,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:27,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:27,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:28,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:28,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:28,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:28,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:28,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:29,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:29,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:29,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:29,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 124 proven. 1742 refuted. 0 times theorem prover too weak. 1931 trivial. 0 not checked. [2024-09-13 03:14:29,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:14:29,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197628756] [2024-09-13 03:14:29,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197628756] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:14:29,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372432690] [2024-09-13 03:14:29,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:14:29,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:14:29,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:14:29,570 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:14:29,571 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-13 03:14:29,917 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2024-09-13 03:14:29,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:14:29,924 WARN L260 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 409 conjuncts are in the unsatisfiable core [2024-09-13 03:14:29,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:14:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 21 proven. 1690 refuted. 0 times theorem prover too weak. 2086 trivial. 0 not checked. [2024-09-13 03:14:33,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:14:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 128 proven. 3104 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2024-09-13 03:14:50,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372432690] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:14:50,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:14:50,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 52, 105] total 203 [2024-09-13 03:14:50,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344659793] [2024-09-13 03:14:50,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:14:50,152 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-09-13 03:14:50,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:14:50,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-09-13 03:14:50,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=794, Invalid=40212, Unknown=0, NotChecked=0, Total=41006 [2024-09-13 03:14:50,155 INFO L87 Difference]: Start difference. First operand 108 states and 158 transitions. Second operand has 203 states, 199 states have (on average 1.3768844221105527) internal successors, (274), 113 states have internal predecessors, (274), 38 states have call successors, (40), 1 states have call predecessors, (40), 68 states have return successors, (92), 91 states have call predecessors, (92), 38 states have call successors, (92) [2024-09-13 03:15:01,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:15:01,465 INFO L93 Difference]: Finished difference Result 147 states and 229 transitions. [2024-09-13 03:15:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-09-13 03:15:01,465 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 199 states have (on average 1.3768844221105527) internal successors, (274), 113 states have internal predecessors, (274), 38 states have call successors, (40), 1 states have call predecessors, (40), 68 states have return successors, (92), 91 states have call predecessors, (92), 38 states have call successors, (92) Word has length 247 [2024-09-13 03:15:01,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:15:01,467 INFO L225 Difference]: With dead ends: 147 [2024-09-13 03:15:01,467 INFO L226 Difference]: Without dead ends: 120 [2024-09-13 03:15:01,472 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15597 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=4062, Invalid=72390, Unknown=0, NotChecked=0, Total=76452 [2024-09-13 03:15:01,473 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 680 mSDsluCounter, 3193 mSDsCounter, 0 mSdLazyCounter, 14534 mSolverCounterSat, 951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 15485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 14534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:15:01,473 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 3229 Invalid, 15485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [951 Valid, 14534 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-09-13 03:15:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-13 03:15:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2024-09-13 03:15:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 74 states have internal predecessors, (77), 10 states have call successors, (10), 6 states have call predecessors, (10), 27 states have return successors, (76), 30 states have call predecessors, (76), 9 states have call successors, (76) [2024-09-13 03:15:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 163 transitions. [2024-09-13 03:15:01,543 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 163 transitions. Word has length 247 [2024-09-13 03:15:01,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:15:01,544 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 163 transitions. [2024-09-13 03:15:01,544 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 199 states have (on average 1.3768844221105527) internal successors, (274), 113 states have internal predecessors, (274), 38 states have call successors, (40), 1 states have call predecessors, (40), 68 states have return successors, (92), 91 states have call predecessors, (92), 38 states have call successors, (92) [2024-09-13 03:15:01,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:15:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 163 transitions. [2024-09-13 03:15:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-13 03:15:01,546 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:15:01,546 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 34, 34, 34, 34, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:15:01,566 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-13 03:15:01,747 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-13 03:15:01,747 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:15:01,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:15:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash -274614621, now seen corresponding path program 25 times [2024-09-13 03:15:01,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:15:01,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912571044] [2024-09-13 03:15:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:15:01,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:15:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:02,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:15:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:02,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:15:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:03,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:03,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:03,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:03,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:03,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:03,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:03,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:03,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:04,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:04,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:04,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:04,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:04,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-13 03:15:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:05,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:05,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:06,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:07,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:07,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:08,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:08,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:09,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:09,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:09,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:10,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:10,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:10,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:10,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:11,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:11,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:11,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:11,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:11,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:11,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:12,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:12,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 132 proven. 1953 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2024-09-13 03:15:12,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:15:12,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912571044] [2024-09-13 03:15:12,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912571044] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:15:12,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440587754] [2024-09-13 03:15:12,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:15:12,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:15:12,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:15:12,263 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:15:12,265 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-13 03:15:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:12,628 WARN L260 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 433 conjuncts are in the unsatisfiable core [2024-09-13 03:15:12,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:15:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 22 proven. 1897 refuted. 0 times theorem prover too weak. 2353 trivial. 0 not checked. [2024-09-13 03:15:16,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:15:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 137 proven. 3501 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-09-13 03:15:34,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440587754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:15:34,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:15:34,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 54, 111] total 214 [2024-09-13 03:15:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144240383] [2024-09-13 03:15:34,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:15:34,942 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 214 states [2024-09-13 03:15:34,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:15:34,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2024-09-13 03:15:34,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=44742, Unknown=0, NotChecked=0, Total=45582 [2024-09-13 03:15:34,947 INFO L87 Difference]: Start difference. First operand 111 states and 163 transitions. Second operand has 214 states, 210 states have (on average 1.3761904761904762) internal successors, (289), 119 states have internal predecessors, (289), 40 states have call successors, (42), 1 states have call predecessors, (42), 72 states have return successors, (97), 96 states have call predecessors, (97), 40 states have call successors, (97) [2024-09-13 03:15:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:15:47,678 INFO L93 Difference]: Finished difference Result 151 states and 236 transitions. [2024-09-13 03:15:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-13 03:15:47,678 INFO L78 Accepts]: Start accepts. Automaton has has 214 states, 210 states have (on average 1.3761904761904762) internal successors, (289), 119 states have internal predecessors, (289), 40 states have call successors, (42), 1 states have call predecessors, (42), 72 states have return successors, (97), 96 states have call predecessors, (97), 40 states have call successors, (97) Word has length 261 [2024-09-13 03:15:47,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:15:47,680 INFO L225 Difference]: With dead ends: 151 [2024-09-13 03:15:47,680 INFO L226 Difference]: Without dead ends: 123 [2024-09-13 03:15:47,686 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17178 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=4396, Invalid=79994, Unknown=0, NotChecked=0, Total=84390 [2024-09-13 03:15:47,687 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 724 mSDsluCounter, 3873 mSDsCounter, 0 mSdLazyCounter, 16722 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 17532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 16722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:15:47,687 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 3910 Invalid, 17532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [810 Valid, 16722 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-09-13 03:15:47,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-13 03:15:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2024-09-13 03:15:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 76 states have internal predecessors, (79), 10 states have call successors, (10), 6 states have call predecessors, (10), 28 states have return successors, (79), 31 states have call predecessors, (79), 9 states have call successors, (79) [2024-09-13 03:15:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 168 transitions. [2024-09-13 03:15:47,761 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 168 transitions. Word has length 261 [2024-09-13 03:15:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:15:47,762 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 168 transitions. [2024-09-13 03:15:47,762 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 214 states, 210 states have (on average 1.3761904761904762) internal successors, (289), 119 states have internal predecessors, (289), 40 states have call successors, (42), 1 states have call predecessors, (42), 72 states have return successors, (97), 96 states have call predecessors, (97), 40 states have call successors, (97) [2024-09-13 03:15:47,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:15:47,763 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 168 transitions. [2024-09-13 03:15:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-09-13 03:15:47,764 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:15:47,764 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 36, 36, 36, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:15:47,785 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-13 03:15:47,965 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:15:47,965 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:15:47,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:15:47,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1725143283, now seen corresponding path program 26 times [2024-09-13 03:15:47,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:15:47,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941958007] [2024-09-13 03:15:47,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:15:47,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:15:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:15:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:15:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:51,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-13 03:15:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:51,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:52,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:53,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:54,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:54,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:55,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:55,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:56,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:56,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:57,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:57,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:57,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:57,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:58,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:58,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:58,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:58,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:59,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:59,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:59,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:59,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:59,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:59,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 140 proven. 2176 refuted. 0 times theorem prover too weak. 2459 trivial. 0 not checked. [2024-09-13 03:15:59,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:15:59,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941958007] [2024-09-13 03:15:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941958007] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:15:59,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874077024] [2024-09-13 03:15:59,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:15:59,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:15:59,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:15:59,926 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:15:59,927 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-13 03:16:00,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:16:00,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:16:00,329 WARN L260 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 457 conjuncts are in the unsatisfiable core [2024-09-13 03:16:00,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:16:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 23 proven. 2116 refuted. 0 times theorem prover too weak. 2636 trivial. 0 not checked. [2024-09-13 03:16:04,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:16:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 146 proven. 3922 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2024-09-13 03:16:25,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874077024] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:16:25,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:16:25,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 56, 117] total 225 [2024-09-13 03:16:25,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727840971] [2024-09-13 03:16:25,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:16:25,114 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 225 states [2024-09-13 03:16:25,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:16:25,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2024-09-13 03:16:25,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=886, Invalid=49514, Unknown=0, NotChecked=0, Total=50400 [2024-09-13 03:16:25,118 INFO L87 Difference]: Start difference. First operand 114 states and 168 transitions. Second operand has 225 states, 221 states have (on average 1.3755656108597285) internal successors, (304), 125 states have internal predecessors, (304), 42 states have call successors, (44), 1 states have call predecessors, (44), 76 states have return successors, (102), 101 states have call predecessors, (102), 42 states have call successors, (102) [2024-09-13 03:16:38,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:16:38,763 INFO L93 Difference]: Finished difference Result 155 states and 243 transitions. [2024-09-13 03:16:38,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-09-13 03:16:38,763 INFO L78 Accepts]: Start accepts. Automaton has has 225 states, 221 states have (on average 1.3755656108597285) internal successors, (304), 125 states have internal predecessors, (304), 42 states have call successors, (44), 1 states have call predecessors, (44), 76 states have return successors, (102), 101 states have call predecessors, (102), 42 states have call successors, (102) Word has length 275 [2024-09-13 03:16:38,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:16:38,765 INFO L225 Difference]: With dead ends: 155 [2024-09-13 03:16:38,765 INFO L226 Difference]: Without dead ends: 126 [2024-09-13 03:16:38,771 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18847 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=4742, Invalid=87978, Unknown=0, NotChecked=0, Total=92720 [2024-09-13 03:16:38,772 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 697 mSDsluCounter, 3855 mSDsCounter, 0 mSdLazyCounter, 16990 mSolverCounterSat, 1143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 18133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1143 IncrementalHoareTripleChecker+Valid, 16990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:16:38,772 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3894 Invalid, 18133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1143 Valid, 16990 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-09-13 03:16:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-13 03:16:38,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 117. [2024-09-13 03:16:38,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.051948051948052) internal successors, (81), 78 states have internal predecessors, (81), 10 states have call successors, (10), 6 states have call predecessors, (10), 29 states have return successors, (82), 32 states have call predecessors, (82), 9 states have call successors, (82) [2024-09-13 03:16:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 173 transitions. [2024-09-13 03:16:38,835 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 173 transitions. Word has length 275 [2024-09-13 03:16:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:16:38,835 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 173 transitions. [2024-09-13 03:16:38,836 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 225 states, 221 states have (on average 1.3755656108597285) internal successors, (304), 125 states have internal predecessors, (304), 42 states have call successors, (44), 1 states have call predecessors, (44), 76 states have return successors, (102), 101 states have call predecessors, (102), 42 states have call successors, (102) [2024-09-13 03:16:38,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:16:38,836 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 173 transitions. [2024-09-13 03:16:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-09-13 03:16:38,837 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:16:38,838 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 38, 38, 38, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:16:38,861 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-13 03:16:39,038 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-13 03:16:39,038 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:16:39,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:16:39,039 INFO L85 PathProgramCache]: Analyzing trace with hash -236514589, now seen corresponding path program 27 times [2024-09-13 03:16:39,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:16:39,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506675818] [2024-09-13 03:16:39,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:16:39,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:16:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:40,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:16:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:40,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:16:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:40,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:40,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:41,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:41,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:41,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:41,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:41,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:42,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:42,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:42,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:42,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:42,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:42,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:42,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:42,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-13 03:16:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:43,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:44,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:45,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:46,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:46,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:47,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:48,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:48,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:48,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:49,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:49,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:50,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:50,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:50,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:50,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:51,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:51,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:51,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:51,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:52,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:52,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:52,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:52,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:52,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:16:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:16:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 148 proven. 2411 refuted. 0 times theorem prover too weak. 2747 trivial. 0 not checked. [2024-09-13 03:16:52,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:16:52,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506675818] [2024-09-13 03:16:52,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506675818] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:16:52,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833317314] [2024-09-13 03:16:52,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:16:52,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:16:52,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:16:52,725 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:16:52,725 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-13 03:16:53,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-09-13 03:16:53,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:16:53,228 WARN L260 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 481 conjuncts are in the unsatisfiable core [2024-09-13 03:16:53,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:16:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 24 proven. 2347 refuted. 0 times theorem prover too weak. 2935 trivial. 0 not checked. [2024-09-13 03:16:58,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:17:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 155 proven. 4367 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-09-13 03:17:20,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833317314] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:17:20,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:17:20,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 58, 123] total 236 [2024-09-13 03:17:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405424810] [2024-09-13 03:17:20,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:17:20,158 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 236 states [2024-09-13 03:17:20,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:17:20,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2024-09-13 03:17:20,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=932, Invalid=54528, Unknown=0, NotChecked=0, Total=55460 [2024-09-13 03:17:20,162 INFO L87 Difference]: Start difference. First operand 117 states and 173 transitions. Second operand has 236 states, 232 states have (on average 1.375) internal successors, (319), 131 states have internal predecessors, (319), 44 states have call successors, (46), 1 states have call predecessors, (46), 80 states have return successors, (107), 106 states have call predecessors, (107), 44 states have call successors, (107) [2024-09-13 03:17:34,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:17:34,557 INFO L93 Difference]: Finished difference Result 159 states and 250 transitions. [2024-09-13 03:17:34,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-13 03:17:34,557 INFO L78 Accepts]: Start accepts. Automaton has has 236 states, 232 states have (on average 1.375) internal successors, (319), 131 states have internal predecessors, (319), 44 states have call successors, (46), 1 states have call predecessors, (46), 80 states have return successors, (107), 106 states have call predecessors, (107), 44 states have call successors, (107) Word has length 289 [2024-09-13 03:17:34,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:17:34,559 INFO L225 Difference]: With dead ends: 159 [2024-09-13 03:17:34,559 INFO L226 Difference]: Without dead ends: 129 [2024-09-13 03:17:34,566 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20580 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=5100, Invalid=96342, Unknown=0, NotChecked=0, Total=101442 [2024-09-13 03:17:34,567 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 920 mSDsluCounter, 3927 mSDsCounter, 0 mSdLazyCounter, 18410 mSolverCounterSat, 1150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 3967 SdHoareTripleChecker+Invalid, 19560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1150 IncrementalHoareTripleChecker+Valid, 18410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-09-13 03:17:34,567 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 3967 Invalid, 19560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1150 Valid, 18410 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-09-13 03:17:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-13 03:17:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2024-09-13 03:17:34,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 80 states have internal predecessors, (83), 10 states have call successors, (10), 6 states have call predecessors, (10), 30 states have return successors, (85), 33 states have call predecessors, (85), 9 states have call successors, (85) [2024-09-13 03:17:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2024-09-13 03:17:34,644 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 289 [2024-09-13 03:17:34,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:17:34,644 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2024-09-13 03:17:34,645 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 236 states, 232 states have (on average 1.375) internal successors, (319), 131 states have internal predecessors, (319), 44 states have call successors, (46), 1 states have call predecessors, (46), 80 states have return successors, (107), 106 states have call predecessors, (107), 44 states have call successors, (107) [2024-09-13 03:17:34,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:17:34,645 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2024-09-13 03:17:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-13 03:17:34,647 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:17:34,647 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] [2024-09-13 03:17:34,668 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-13 03:17:34,847 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:17:34,847 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:17:34,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:17:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1882165795, now seen corresponding path program 28 times [2024-09-13 03:17:34,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:17:34,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641556017] [2024-09-13 03:17:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:17:34,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:17:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:35,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:17:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:35,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:17:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:35,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:35,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:35,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:17:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:36,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:37,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:38,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:38,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:39,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:40,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:40,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:41,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:41,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:42,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:42,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:42,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:43,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:43,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:43,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:43,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:44,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:44,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:44,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:44,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:44,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:44,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:45,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:45,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:45,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:17:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:17:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 104 proven. 1267 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-09-13 03:17:45,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:17:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641556017] [2024-09-13 03:17:45,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641556017] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:17:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366510642] [2024-09-13 03:17:45,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:17:45,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:17:45,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:17:45,354 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:17:45,354 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-13 03:17:45,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:17:45,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:17:45,808 WARN L260 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 349 conjuncts are in the unsatisfiable core [2024-09-13 03:17:45,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:17:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 25 proven. 1238 refuted. 0 times theorem prover too weak. 1469 trivial. 0 not checked. [2024-09-13 03:17:49,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:18:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 86 proven. 2236 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-09-13 03:18:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366510642] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:18:03,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:18:03,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 60, 90] total 182 [2024-09-13 03:18:03,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654633746] [2024-09-13 03:18:03,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:18:03,286 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2024-09-13 03:18:03,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:18:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2024-09-13 03:18:03,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=32276, Unknown=0, NotChecked=0, Total=32942 [2024-09-13 03:18:03,290 INFO L87 Difference]: Start difference. First operand 120 states and 178 transitions. Second operand has 182 states, 178 states have (on average 1.3651685393258426) internal successors, (243), 98 states have internal predecessors, (243), 33 states have call successors, (35), 1 states have call predecessors, (35), 58 states have return successors, (86), 85 states have call predecessors, (86), 33 states have call successors, (86) [2024-09-13 03:18:12,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:18:12,080 INFO L93 Difference]: Finished difference Result 139 states and 209 transitions. [2024-09-13 03:18:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-09-13 03:18:12,081 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 178 states have (on average 1.3651685393258426) internal successors, (243), 98 states have internal predecessors, (243), 33 states have call successors, (35), 1 states have call predecessors, (35), 58 states have return successors, (86), 85 states have call predecessors, (86), 33 states have call successors, (86) Word has length 212 [2024-09-13 03:18:12,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:18:12,082 INFO L225 Difference]: With dead ends: 139 [2024-09-13 03:18:12,082 INFO L226 Difference]: Without dead ends: 132 [2024-09-13 03:18:12,086 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12788 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=2874, Invalid=56418, Unknown=0, NotChecked=0, Total=59292 [2024-09-13 03:18:12,087 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 683 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 11397 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 12136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 11397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-09-13 03:18:12,087 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 3493 Invalid, 12136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 11397 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-09-13 03:18:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-09-13 03:18:12,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 123. [2024-09-13 03:18:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 82 states have internal predecessors, (85), 10 states have call successors, (10), 6 states have call predecessors, (10), 31 states have return successors, (88), 34 states have call predecessors, (88), 9 states have call successors, (88) [2024-09-13 03:18:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 183 transitions. [2024-09-13 03:18:12,168 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 183 transitions. Word has length 212 [2024-09-13 03:18:12,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:18:12,168 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 183 transitions. [2024-09-13 03:18:12,169 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 178 states have (on average 1.3651685393258426) internal successors, (243), 98 states have internal predecessors, (243), 33 states have call successors, (35), 1 states have call predecessors, (35), 58 states have return successors, (86), 85 states have call predecessors, (86), 33 states have call successors, (86) [2024-09-13 03:18:12,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:18:12,169 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 183 transitions. [2024-09-13 03:18:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-09-13 03:18:12,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:18:12,171 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 28, 28, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:18:12,191 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-13 03:18:12,371 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:18:12,371 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:18:12,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:18:12,372 INFO L85 PathProgramCache]: Analyzing trace with hash -172936567, now seen corresponding path program 29 times [2024-09-13 03:18:12,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:18:12,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709437501] [2024-09-13 03:18:12,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:18:12,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:18:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:13,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:18:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:13,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:18:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:13,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:13,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:13,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 03:18:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:14,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:15,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:15,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:16,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:17,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:18,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:18,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:19,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:19,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:20,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:20,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:21,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:21,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:21,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:22,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:22,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:22,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:22,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:22,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:23,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:23,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:23,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:23,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:23,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:23,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:23,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 108 proven. 1356 refuted. 0 times theorem prover too weak. 1467 trivial. 0 not checked. [2024-09-13 03:18:23,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:18:23,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709437501] [2024-09-13 03:18:23,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709437501] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:18:23,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371183974] [2024-09-13 03:18:23,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:18:23,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:18:23,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:18:23,876 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:18:23,877 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-13 03:18:24,378 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-09-13 03:18:24,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:18:24,384 WARN L260 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 361 conjuncts are in the unsatisfiable core [2024-09-13 03:18:24,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:18:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 53 proven. 1300 refuted. 0 times theorem prover too weak. 1578 trivial. 0 not checked. [2024-09-13 03:18:28,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:18:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 90 proven. 2403 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-09-13 03:18:43,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371183974] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:18:43,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:18:43,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 62, 93] total 188 [2024-09-13 03:18:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362624291] [2024-09-13 03:18:43,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:18:43,281 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2024-09-13 03:18:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:18:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2024-09-13 03:18:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=688, Invalid=34468, Unknown=0, NotChecked=0, Total=35156 [2024-09-13 03:18:43,285 INFO L87 Difference]: Start difference. First operand 123 states and 183 transitions. Second operand has 188 states, 184 states have (on average 1.3804347826086956) internal successors, (254), 101 states have internal predecessors, (254), 34 states have call successors, (36), 1 states have call predecessors, (36), 60 states have return successors, (89), 88 states have call predecessors, (89), 34 states have call successors, (89) [2024-09-13 03:18:52,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:18:52,095 INFO L93 Difference]: Finished difference Result 142 states and 214 transitions. [2024-09-13 03:18:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-13 03:18:52,096 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 184 states have (on average 1.3804347826086956) internal successors, (254), 101 states have internal predecessors, (254), 34 states have call successors, (36), 1 states have call predecessors, (36), 60 states have return successors, (89), 88 states have call predecessors, (89), 34 states have call successors, (89) Word has length 219 [2024-09-13 03:18:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:18:52,098 INFO L225 Difference]: With dead ends: 142 [2024-09-13 03:18:52,098 INFO L226 Difference]: Without dead ends: 135 [2024-09-13 03:18:52,102 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13641 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=3031, Invalid=60221, Unknown=0, NotChecked=0, Total=63252 [2024-09-13 03:18:52,103 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 843 mSDsluCounter, 3229 mSDsCounter, 0 mSdLazyCounter, 10505 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 11379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 10505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:18:52,103 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 3271 Invalid, 11379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 10505 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-09-13 03:18:52,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-09-13 03:18:52,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 126. [2024-09-13 03:18:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 84 states have internal predecessors, (87), 10 states have call successors, (10), 6 states have call predecessors, (10), 32 states have return successors, (91), 35 states have call predecessors, (91), 9 states have call successors, (91) [2024-09-13 03:18:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 188 transitions. [2024-09-13 03:18:52,191 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 188 transitions. Word has length 219 [2024-09-13 03:18:52,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:18:52,191 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 188 transitions. [2024-09-13 03:18:52,191 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 184 states have (on average 1.3804347826086956) internal successors, (254), 101 states have internal predecessors, (254), 34 states have call successors, (36), 1 states have call predecessors, (36), 60 states have return successors, (89), 88 states have call predecessors, (89), 34 states have call successors, (89) [2024-09-13 03:18:52,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:18:52,192 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 188 transitions. [2024-09-13 03:18:52,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-13 03:18:52,193 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:18:52,193 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 42, 42, 42, 42, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:18:52,214 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-13 03:18:52,394 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-13 03:18:52,395 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:18:52,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:18:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash 220646389, now seen corresponding path program 30 times [2024-09-13 03:18:52,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:18:52,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902257704] [2024-09-13 03:18:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:18:52,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:18:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:53,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:18:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:53,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:18:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:54,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:54,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:54,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:55,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:55,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:55,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:55,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:55,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:55,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:55,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:56,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:56,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:56,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:56,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:56,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:56,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-13 03:18:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:57,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:58,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:59,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:00,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:01,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:01,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:02,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:03,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:04,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:04,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:05,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:05,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:05,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:06,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:06,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:07,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:07,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:07,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:07,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:08,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:08,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:08,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:08,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:08,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:08,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:09,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:09,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:19:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:19:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6452 backedges. 164 proven. 2917 refuted. 0 times theorem prover too weak. 3371 trivial. 0 not checked. [2024-09-13 03:19:09,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:19:09,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902257704] [2024-09-13 03:19:09,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902257704] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:19:09,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201943180] [2024-09-13 03:19:09,398 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:19:09,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:19:09,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:19:09,400 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:19:09,400 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-13 03:19:10,001 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 53 check-sat command(s) [2024-09-13 03:19:10,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:19:10,010 WARN L260 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 529 conjuncts are in the unsatisfiable core [2024-09-13 03:19:10,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:19:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6452 backedges. 27 proven. 2847 refuted. 0 times theorem prover too weak. 3578 trivial. 0 not checked. [2024-09-13 03:19:16,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:19:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6452 backedges. 170 proven. 5332 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-09-13 03:19:42,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201943180] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:19:42,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:19:42,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 64, 135] total 259 [2024-09-13 03:19:42,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154286123] [2024-09-13 03:19:42,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:19:42,357 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 259 states [2024-09-13 03:19:42,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:19:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 259 interpolants. [2024-09-13 03:19:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1022, Invalid=65800, Unknown=0, NotChecked=0, Total=66822 [2024-09-13 03:19:42,362 INFO L87 Difference]: Start difference. First operand 126 states and 188 transitions. Second operand has 259 states, 255 states have (on average 1.3725490196078431) internal successors, (350), 143 states have internal predecessors, (350), 48 states have call successors, (50), 1 states have call predecessors, (50), 88 states have return successors, (118), 117 states have call predecessors, (118), 48 states have call successors, (118) [2024-09-13 03:20:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:20:01,059 INFO L93 Difference]: Finished difference Result 171 states and 271 transitions. [2024-09-13 03:20:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-09-13 03:20:01,060 INFO L78 Accepts]: Start accepts. Automaton has has 259 states, 255 states have (on average 1.3725490196078431) internal successors, (350), 143 states have internal predecessors, (350), 48 states have call successors, (50), 1 states have call predecessors, (50), 88 states have return successors, (118), 117 states have call predecessors, (118), 48 states have call successors, (118) Word has length 317 [2024-09-13 03:20:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:20:01,062 INFO L225 Difference]: With dead ends: 171 [2024-09-13 03:20:01,062 INFO L226 Difference]: Without dead ends: 138 [2024-09-13 03:20:01,069 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 349 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24993 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=6016, Invalid=116834, Unknown=0, NotChecked=0, Total=122850 [2024-09-13 03:20:01,069 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 1058 mSDsluCounter, 5347 mSDsCounter, 0 mSdLazyCounter, 24705 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 5389 SdHoareTripleChecker+Invalid, 25630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 24705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:20:01,069 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 5389 Invalid, 25630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [925 Valid, 24705 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2024-09-13 03:20:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-09-13 03:20:01,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2024-09-13 03:20:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 86 states have internal predecessors, (89), 10 states have call successors, (10), 6 states have call predecessors, (10), 33 states have return successors, (94), 36 states have call predecessors, (94), 9 states have call successors, (94) [2024-09-13 03:20:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 193 transitions. [2024-09-13 03:20:01,223 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 193 transitions. Word has length 317 [2024-09-13 03:20:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:20:01,223 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 193 transitions. [2024-09-13 03:20:01,223 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 259 states, 255 states have (on average 1.3725490196078431) internal successors, (350), 143 states have internal predecessors, (350), 48 states have call successors, (50), 1 states have call predecessors, (50), 88 states have return successors, (118), 117 states have call predecessors, (118), 48 states have call successors, (118) [2024-09-13 03:20:01,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:20:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 193 transitions. [2024-09-13 03:20:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-09-13 03:20:01,225 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:20:01,226 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 44, 44, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:20:01,246 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-13 03:20:01,426 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:20:01,426 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:20:01,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:20:01,427 INFO L85 PathProgramCache]: Analyzing trace with hash 982451661, now seen corresponding path program 31 times [2024-09-13 03:20:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:20:01,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826712109] [2024-09-13 03:20:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:20:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:20:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:03,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:20:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:03,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:20:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:03,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:03,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:04,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:04,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:04,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:04,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:04,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:05,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:05,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:05,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:05,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:05,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:05,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:05,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:05,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:05,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:06,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-13 03:20:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:07,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:08,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:09,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:10,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:11,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:12,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:12,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:13,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:14,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:15,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:15,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:16,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:16,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:17,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:17,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:17,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:18,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:18,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:18,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:19,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:19,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:19,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:19,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:20,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:20,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:20,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:20,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:20,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7067 backedges. 172 proven. 3188 refuted. 0 times theorem prover too weak. 3707 trivial. 0 not checked. [2024-09-13 03:20:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:20:20,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826712109] [2024-09-13 03:20:20,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826712109] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:20:20,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88178181] [2024-09-13 03:20:20,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:20:20,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:20:20,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:20:20,934 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:20:20,935 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-13 03:20:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:21,555 WARN L260 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 553 conjuncts are in the unsatisfiable core [2024-09-13 03:20:21,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:20:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7067 backedges. 28 proven. 3114 refuted. 0 times theorem prover too weak. 3925 trivial. 0 not checked. [2024-09-13 03:20:27,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:20:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7067 backedges. 179 proven. 5849 refuted. 0 times theorem prover too weak. 1039 trivial. 0 not checked. [2024-09-13 03:20:56,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88178181] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:20:56,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:20:56,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 66, 141] total 270 [2024-09-13 03:20:56,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518476463] [2024-09-13 03:20:56,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:20:56,442 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 270 states [2024-09-13 03:20:56,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:20:56,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 270 interpolants. [2024-09-13 03:20:56,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1068, Invalid=71562, Unknown=0, NotChecked=0, Total=72630 [2024-09-13 03:20:56,449 INFO L87 Difference]: Start difference. First operand 129 states and 193 transitions. Second operand has 270 states, 266 states have (on average 1.3721804511278195) internal successors, (365), 149 states have internal predecessors, (365), 50 states have call successors, (52), 1 states have call predecessors, (52), 92 states have return successors, (123), 122 states have call predecessors, (123), 50 states have call successors, (123) [2024-09-13 03:21:17,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:21:17,146 INFO L93 Difference]: Finished difference Result 175 states and 278 transitions. [2024-09-13 03:21:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-09-13 03:21:17,147 INFO L78 Accepts]: Start accepts. Automaton has has 270 states, 266 states have (on average 1.3721804511278195) internal successors, (365), 149 states have internal predecessors, (365), 50 states have call successors, (52), 1 states have call predecessors, (52), 92 states have return successors, (123), 122 states have call predecessors, (123), 50 states have call successors, (123) Word has length 331 [2024-09-13 03:21:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:21:17,149 INFO L225 Difference]: With dead ends: 175 [2024-09-13 03:21:17,149 INFO L226 Difference]: Without dead ends: 141 [2024-09-13 03:21:17,155 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27005 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=6416, Invalid=126444, Unknown=0, NotChecked=0, Total=132860 [2024-09-13 03:21:17,155 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 1015 mSDsluCounter, 5898 mSDsCounter, 0 mSdLazyCounter, 27624 mSolverCounterSat, 1121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 5940 SdHoareTripleChecker+Invalid, 28745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1121 IncrementalHoareTripleChecker+Valid, 27624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:21:17,155 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 5940 Invalid, 28745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1121 Valid, 27624 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2024-09-13 03:21:17,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-09-13 03:21:17,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2024-09-13 03:21:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 88 states have internal predecessors, (91), 10 states have call successors, (10), 6 states have call predecessors, (10), 34 states have return successors, (97), 37 states have call predecessors, (97), 9 states have call successors, (97) [2024-09-13 03:21:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 198 transitions. [2024-09-13 03:21:17,245 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 198 transitions. Word has length 331 [2024-09-13 03:21:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:21:17,245 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 198 transitions. [2024-09-13 03:21:17,246 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 270 states, 266 states have (on average 1.3721804511278195) internal successors, (365), 149 states have internal predecessors, (365), 50 states have call successors, (52), 1 states have call predecessors, (52), 92 states have return successors, (123), 122 states have call predecessors, (123), 50 states have call successors, (123) [2024-09-13 03:21:17,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:21:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 198 transitions. [2024-09-13 03:21:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-09-13 03:21:17,247 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:21:17,248 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:21:17,272 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-13 03:21:17,448 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-13 03:21:17,448 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:21:17,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:21:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash -441240287, now seen corresponding path program 32 times [2024-09-13 03:21:17,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:21:17,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961114368] [2024-09-13 03:21:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:21:17,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:21:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:19,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:21:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:19,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:21:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:19,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:20,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:20,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:20,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:20,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:21,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:21,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:21,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:21,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:21,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:22,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:22,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:22,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:22,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:22,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:22,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:22,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:22,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-13 03:21:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:24,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:25,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:26,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:27,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:28,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:29,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:30,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:31,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:32,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:32,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:33,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:34,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:34,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:35,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:35,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:36,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:36,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:36,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:37,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:37,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:37,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:38,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:38,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:38,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:38,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:38,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:39,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:39,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:39,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:21:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:21:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7710 backedges. 180 proven. 3471 refuted. 0 times theorem prover too weak. 4059 trivial. 0 not checked. [2024-09-13 03:21:39,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:21:39,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961114368] [2024-09-13 03:21:39,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961114368] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:21:39,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890774531] [2024-09-13 03:21:39,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:21:39,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:21:39,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:21:39,451 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:21:39,452 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-13 03:21:40,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:21:40,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:21:40,136 WARN L260 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 577 conjuncts are in the unsatisfiable core [2024-09-13 03:21:40,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:21:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7710 backedges. 29 proven. 3393 refuted. 0 times theorem prover too weak. 4288 trivial. 0 not checked. [2024-09-13 03:21:46,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:22:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7710 backedges. 188 proven. 6390 refuted. 0 times theorem prover too weak. 1132 trivial. 0 not checked. [2024-09-13 03:22:17,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890774531] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:22:17,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:22:17,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 68, 147] total 281 [2024-09-13 03:22:17,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128542355] [2024-09-13 03:22:17,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:22:17,888 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 281 states [2024-09-13 03:22:17,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:22:17,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 281 interpolants. [2024-09-13 03:22:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1114, Invalid=77566, Unknown=0, NotChecked=0, Total=78680 [2024-09-13 03:22:17,893 INFO L87 Difference]: Start difference. First operand 132 states and 198 transitions. Second operand has 281 states, 277 states have (on average 1.371841155234657) internal successors, (380), 155 states have internal predecessors, (380), 52 states have call successors, (54), 1 states have call predecessors, (54), 96 states have return successors, (128), 127 states have call predecessors, (128), 52 states have call successors, (128) Killed by 15