./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/seq-3.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/seq-3.i -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 6c770a3141edeab927df0da4e8c2152e1fb2e87b0c43a352500a7e3d3cff4533 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:03:55,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:03:55,724 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:03:55,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:03:55,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:03:55,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:03:55,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:03:55,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:03:55,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:03:55,754 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:03:55,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:03:55,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:03:55,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:03:55,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:03:55,757 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:03:55,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:03:55,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:03:55,758 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:03:55,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:03:55,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:03:55,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:03:55,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:03:55,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:03:55,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:03:55,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:03:55,762 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:03:55,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:03:55,763 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:03:55,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:03:55,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:03:55,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:03:55,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:03:55,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:03:55,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:03:55,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:03:55,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:03:55,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:03:55,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:03:55,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:03:55,766 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:03:55,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:03:55,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:03:55,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c770a3141edeab927df0da4e8c2152e1fb2e87b0c43a352500a7e3d3cff4533 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:03:56,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:03:56,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:03:56,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:03:56,034 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:03:56,034 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:03:56,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/seq-3.i [2024-09-24 23:03:57,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:03:57,655 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:03:57,656 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/seq-3.i [2024-09-24 23:03:57,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/67c91c9b0/72a80de6e50844b09f16ea7f5655c5c8/FLAGe4a97a7b0 [2024-09-24 23:03:58,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/67c91c9b0/72a80de6e50844b09f16ea7f5655c5c8 [2024-09-24 23:03:58,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:03:58,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:03:58,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:03:58,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:03:58,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:03:58,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c83f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58, skipping insertion in model container [2024-09-24 23:03:58,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,091 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:03:58,233 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/seq-3.i[893,906] [2024-09-24 23:03:58,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:03:58,271 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:03:58,283 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/seq-3.i[893,906] [2024-09-24 23:03:58,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:03:58,310 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:03:58,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58 WrapperNode [2024-09-24 23:03:58,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:03:58,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:03:58,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:03:58,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:03:58,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,332 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:03:58,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:03:58,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:03:58,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:03:58,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:03:58,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,345 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,360 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]. [2024-09-24 23:03:58,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,368 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:03:58,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:03:58,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:03:58,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:03:58,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (1/1) ... [2024-09-24 23:03:58,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:03:58,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:03:58,405 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) [2024-09-24 23:03:58,411 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 [2024-09-24 23:03:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:03:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:03:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:03:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:03:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:03:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:03:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:03:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:03:58,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:03:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:03:58,511 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:03:58,513 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:03:58,651 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-24 23:03:58,652 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:03:58,669 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:03:58,669 INFO L317 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-24 23:03:58,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:03:58 BoogieIcfgContainer [2024-09-24 23:03:58,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:03:58,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:03:58,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:03:58,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:03:58,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:03:58" (1/3) ... [2024-09-24 23:03:58,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444e4418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:03:58, skipping insertion in model container [2024-09-24 23:03:58,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:58" (2/3) ... [2024-09-24 23:03:58,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444e4418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:03:58, skipping insertion in model container [2024-09-24 23:03:58,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:03:58" (3/3) ... [2024-09-24 23:03:58,683 INFO L112 eAbstractionObserver]: Analyzing ICFG seq-3.i [2024-09-24 23:03:58,698 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:03:58,699 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:03:58,745 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:03:58,751 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;@2fe402b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:03:58,752 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:03:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-24 23:03:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-24 23:03:58,764 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:58,765 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:58,769 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:58,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:58,774 INFO L85 PathProgramCache]: Analyzing trace with hash 961061654, now seen corresponding path program 1 times [2024-09-24 23:03:58,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:58,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559790933] [2024-09-24 23:03:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:03:59,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:59,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559790933] [2024-09-24 23:03:59,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559790933] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:03:59,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:03:59,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-24 23:03:59,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650473461] [2024-09-24 23:03:59,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:03:59,203 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-24 23:03:59,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:03:59,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-24 23:03:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:03:59,225 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:03:59,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:03:59,358 INFO L93 Difference]: Finished difference Result 52 states and 77 transitions. [2024-09-24 23:03:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-24 23:03:59,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-24 23:03:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:03:59,369 INFO L225 Difference]: With dead ends: 52 [2024-09-24 23:03:59,369 INFO L226 Difference]: Without dead ends: 28 [2024-09-24 23:03:59,372 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-24 23:03:59,375 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:03:59,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 87 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:03:59,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-24 23:03:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-09-24 23:03:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-24 23:03:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-24 23:03:59,435 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2024-09-24 23:03:59,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:03:59,437 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-24 23:03:59,437 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:03:59,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-24 23:03:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-24 23:03:59,439 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:59,439 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:59,440 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:03:59,441 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:59,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:59,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1906170241, now seen corresponding path program 1 times [2024-09-24 23:03:59,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:59,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573749696] [2024-09-24 23:03:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:59,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:03:59,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:59,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573749696] [2024-09-24 23:03:59,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573749696] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:03:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420115672] [2024-09-24 23:03:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:59,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:03:59,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:03:59,645 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) [2024-09-24 23:03:59,650 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:03:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-24 23:03:59,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:03:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:03:59,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:03:59,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420115672] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:03:59,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:03:59,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-24 23:03:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151681708] [2024-09-24 23:03:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:03:59,785 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-24 23:03:59,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:03:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-24 23:03:59,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-24 23:03:59,788 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:03:59,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:03:59,844 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-09-24 23:03:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:03:59,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-24 23:03:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:03:59,846 INFO L225 Difference]: With dead ends: 35 [2024-09-24 23:03:59,846 INFO L226 Difference]: Without dead ends: 33 [2024-09-24 23:03:59,846 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-24 23:03:59,847 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:03:59,848 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:03:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-24 23:03:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2024-09-24 23:03:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-24 23:03:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-09-24 23:03:59,858 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2024-09-24 23:03:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:03:59,859 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-09-24 23:03:59,859 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:03:59,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-09-24 23:03:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-24 23:03:59,863 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:59,864 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:59,882 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:00,068 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 [2024-09-24 23:04:00,069 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:00,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash 468810935, now seen corresponding path program 1 times [2024-09-24 23:04:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:00,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359951514] [2024-09-24 23:04:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:00,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:00,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:00,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-24 23:04:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:04:00,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359951514] [2024-09-24 23:04:00,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359951514] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146001501] [2024-09-24 23:04:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:00,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:00,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:00,246 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) [2024-09-24 23:04:00,248 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:04:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:00,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-24 23:04:00,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:04:00,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:04:00,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146001501] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:00,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:00,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-09-24 23:04:00,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401065025] [2024-09-24 23:04:00,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:00,508 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-24 23:04:00,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:00,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-24 23:04:00,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-09-24 23:04:00,510 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:04:00,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:00,633 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2024-09-24 23:04:00,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:04:00,634 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2024-09-24 23:04:00,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:00,636 INFO L225 Difference]: With dead ends: 51 [2024-09-24 23:04:00,636 INFO L226 Difference]: Without dead ends: 37 [2024-09-24 23:04:00,637 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-09-24 23:04:00,640 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:00,642 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 130 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:00,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-24 23:04:00,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2024-09-24 23:04:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-24 23:04:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-24 23:04:00,649 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 24 [2024-09-24 23:04:00,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:00,649 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-24 23:04:00,649 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:04:00,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-24 23:04:00,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-24 23:04:00,650 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:00,651 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:00,668 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-24 23:04:00,851 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:00,852 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:00,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:00,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1260603702, now seen corresponding path program 1 times [2024-09-24 23:04:00,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:00,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994318736] [2024-09-24 23:04:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:00,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:00,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:00,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-24 23:04:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:04:00,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:00,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994318736] [2024-09-24 23:04:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994318736] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:00,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005332866] [2024-09-24 23:04:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:00,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:00,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:00,966 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) [2024-09-24 23:04:00,979 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:04:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-24 23:04:01,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:04:01,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:04:01,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005332866] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:01,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:01,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-09-24 23:04:01,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676924719] [2024-09-24 23:04:01,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:01,252 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-24 23:04:01,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-24 23:04:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:04:01,255 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:04:01,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:01,342 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2024-09-24 23:04:01,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:04:01,343 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2024-09-24 23:04:01,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:01,344 INFO L225 Difference]: With dead ends: 54 [2024-09-24 23:04:01,344 INFO L226 Difference]: Without dead ends: 40 [2024-09-24 23:04:01,345 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-09-24 23:04:01,346 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:01,346 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 105 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-24 23:04:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2024-09-24 23:04:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-24 23:04:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-24 23:04:01,359 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 24 [2024-09-24 23:04:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:01,359 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-24 23:04:01,360 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:04:01,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-24 23:04:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-24 23:04:01,362 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:01,362 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:01,378 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-24 23:04:01,562 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:01,563 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:01,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1756686302, now seen corresponding path program 2 times [2024-09-24 23:04:01,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:01,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759372476] [2024-09-24 23:04:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-24 23:04:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:04:01,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:01,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759372476] [2024-09-24 23:04:01,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759372476] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:01,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116742076] [2024-09-24 23:04:01,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:01,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:01,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:01,667 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) [2024-09-24 23:04:01,669 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:04:01,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:01,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:01,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:04:01,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:04:01,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:04:01,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116742076] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:01,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:01,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-24 23:04:01,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237777708] [2024-09-24 23:04:01,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:01,820 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-24 23:04:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-24 23:04:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-24 23:04:01,821 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-24 23:04:01,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:01,882 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-09-24 23:04:01,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-24 23:04:01,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-09-24 23:04:01,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:01,883 INFO L225 Difference]: With dead ends: 45 [2024-09-24 23:04:01,883 INFO L226 Difference]: Without dead ends: 43 [2024-09-24 23:04:01,884 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:04:01,885 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:01,885 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 113 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:04:01,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-24 23:04:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-24 23:04:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:04:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-24 23:04:01,894 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 25 [2024-09-24 23:04:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:01,894 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-24 23:04:01,894 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-24 23:04:01,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-24 23:04:01,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-24 23:04:01,895 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:01,895 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:01,916 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:04:02,096 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:02,096 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:02,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2027964682, now seen corresponding path program 3 times [2024-09-24 23:04:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044899947] [2024-09-24 23:04:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:02,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:02,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:02,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-24 23:04:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:02,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:02,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:02,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044899947] [2024-09-24 23:04:02,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044899947] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239181067] [2024-09-24 23:04:02,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:04:02,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:02,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:02,243 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) [2024-09-24 23:04:02,244 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-24 23:04:02,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-24 23:04:02,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:02,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 23:04:02,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:02,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:02,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239181067] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:02,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:02,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-09-24 23:04:02,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67610401] [2024-09-24 23:04:02,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:02,566 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-24 23:04:02,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-24 23:04:02,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-09-24 23:04:02,568 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:02,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:02,700 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2024-09-24 23:04:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-24 23:04:02,701 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32 [2024-09-24 23:04:02,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:02,702 INFO L225 Difference]: With dead ends: 68 [2024-09-24 23:04:02,702 INFO L226 Difference]: Without dead ends: 51 [2024-09-24 23:04:02,702 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-09-24 23:04:02,703 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:02,703 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 170 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:02,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-24 23:04:02,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2024-09-24 23:04:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:04:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-09-24 23:04:02,718 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2024-09-24 23:04:02,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:02,718 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-09-24 23:04:02,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:02,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:02,719 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-09-24 23:04:02,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-24 23:04:02,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:02,719 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:02,737 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:02,920 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-24 23:04:02,920 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:02,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash 196646005, now seen corresponding path program 1 times [2024-09-24 23:04:02,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:02,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913948060] [2024-09-24 23:04:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:02,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:03,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:03,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-24 23:04:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:03,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:03,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:03,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913948060] [2024-09-24 23:04:03,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913948060] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:03,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787655685] [2024-09-24 23:04:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:03,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:03,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:03,057 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) [2024-09-24 23:04:03,059 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-24 23:04:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:03,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 23:04:03,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:03,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:03,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787655685] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:03,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:03,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-09-24 23:04:03,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197708763] [2024-09-24 23:04:03,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:03,332 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-24 23:04:03,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:03,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-24 23:04:03,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-09-24 23:04:03,334 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:03,433 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2024-09-24 23:04:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-24 23:04:03,433 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32 [2024-09-24 23:04:03,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:03,434 INFO L225 Difference]: With dead ends: 69 [2024-09-24 23:04:03,435 INFO L226 Difference]: Without dead ends: 52 [2024-09-24 23:04:03,435 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2024-09-24 23:04:03,436 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:03,436 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 136 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-24 23:04:03,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2024-09-24 23:04:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:04:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-09-24 23:04:03,443 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2024-09-24 23:04:03,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:03,443 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-09-24 23:04:03,443 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:03,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:03,443 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-09-24 23:04:03,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-24 23:04:03,444 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:03,444 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:03,461 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:03,645 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:03,645 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:03,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:03,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1948349674, now seen corresponding path program 2 times [2024-09-24 23:04:03,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:03,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514534421] [2024-09-24 23:04:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:03,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:03,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:03,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-24 23:04:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:03,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:03,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:03,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514534421] [2024-09-24 23:04:03,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514534421] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:03,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514264788] [2024-09-24 23:04:03,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:03,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:03,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:03,793 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) [2024-09-24 23:04:03,795 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-24 23:04:03,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:03,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:03,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 23:04:03,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:03,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:04,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514264788] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:04,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:04,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2024-09-24 23:04:04,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983561345] [2024-09-24 23:04:04,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:04,057 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-24 23:04:04,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:04,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-24 23:04:04,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2024-09-24 23:04:04,058 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:04,147 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-09-24 23:04:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-24 23:04:04,148 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32 [2024-09-24 23:04:04,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:04,149 INFO L225 Difference]: With dead ends: 71 [2024-09-24 23:04:04,149 INFO L226 Difference]: Without dead ends: 54 [2024-09-24 23:04:04,149 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-09-24 23:04:04,150 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:04,150 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 156 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-24 23:04:04,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2024-09-24 23:04:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.1875) internal successors, (38), 33 states have internal predecessors, (38), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:04:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-09-24 23:04:04,158 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 32 [2024-09-24 23:04:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:04,158 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-09-24 23:04:04,158 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:04,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-09-24 23:04:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-24 23:04:04,161 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:04,161 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:04,177 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-24 23:04:04,364 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:04,365 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:04,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash 21542753, now seen corresponding path program 4 times [2024-09-24 23:04:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:04,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526800086] [2024-09-24 23:04:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:04,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:04,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:04,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:04:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:04,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:04:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:04,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:04,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526800086] [2024-09-24 23:04:04,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526800086] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988606286] [2024-09-24 23:04:04,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:04:04,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:04,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:04,454 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) [2024-09-24 23:04:04,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-24 23:04:04,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:04:04,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:04,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-24 23:04:04,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:04,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:04:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988606286] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:04,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:04,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-09-24 23:04:04,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715983709] [2024-09-24 23:04:04,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:04,620 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-24 23:04:04,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:04,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-24 23:04:04,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:04:04,621 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-24 23:04:04,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:04,684 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2024-09-24 23:04:04,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:04:04,685 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-09-24 23:04:04,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:04,686 INFO L225 Difference]: With dead ends: 55 [2024-09-24 23:04:04,686 INFO L226 Difference]: Without dead ends: 53 [2024-09-24 23:04:04,686 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-24 23:04:04,687 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:04,687 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 137 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:04:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-24 23:04:04,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-09-24 23:04:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.162162162162162) internal successors, (43), 38 states have internal predecessors, (43), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-24 23:04:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2024-09-24 23:04:04,694 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 33 [2024-09-24 23:04:04,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:04,695 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2024-09-24 23:04:04,695 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-24 23:04:04,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:04,695 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2024-09-24 23:04:04,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-24 23:04:04,696 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:04,696 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:04,713 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-24 23:04:04,900 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:04,901 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:04,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:04,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1043643689, now seen corresponding path program 5 times [2024-09-24 23:04:04,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:04,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153355717] [2024-09-24 23:04:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:04,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:05,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:05,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:04:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:05,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:04:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:05,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:04:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:05,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:05,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153355717] [2024-09-24 23:04:05,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153355717] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:05,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471179873] [2024-09-24 23:04:05,052 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:04:05,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:05,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:05,054 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) [2024-09-24 23:04:05,055 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-24 23:04:05,100 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-24 23:04:05,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:05,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-24 23:04:05,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:05,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471179873] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:05,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:05,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-09-24 23:04:05,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922144522] [2024-09-24 23:04:05,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:05,433 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-24 23:04:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:05,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-24 23:04:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2024-09-24 23:04:05,435 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:05,583 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2024-09-24 23:04:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:04:05,584 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2024-09-24 23:04:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:05,585 INFO L225 Difference]: With dead ends: 85 [2024-09-24 23:04:05,585 INFO L226 Difference]: Without dead ends: 65 [2024-09-24 23:04:05,585 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 69 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2024-09-24 23:04:05,586 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:05,586 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 247 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-24 23:04:05,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2024-09-24 23:04:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-24 23:04:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-09-24 23:04:05,594 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2024-09-24 23:04:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:05,594 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-09-24 23:04:05,595 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:05,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-09-24 23:04:05,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-24 23:04:05,596 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:05,596 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:05,613 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-24 23:04:05,796 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-24 23:04:05,797 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:05,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:05,797 INFO L85 PathProgramCache]: Analyzing trace with hash -802541226, now seen corresponding path program 2 times [2024-09-24 23:04:05,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:05,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113176668] [2024-09-24 23:04:05,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:05,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:05,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:05,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:04:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:05,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:04:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:05,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:04:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:05,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:05,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113176668] [2024-09-24 23:04:05,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113176668] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:05,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338198281] [2024-09-24 23:04:05,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:05,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:05,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:05,946 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) [2024-09-24 23:04:05,947 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-24 23:04:05,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:05,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:05,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-24 23:04:05,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:06,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:06,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338198281] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:06,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:06,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-09-24 23:04:06,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081916908] [2024-09-24 23:04:06,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:06,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-24 23:04:06,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:06,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-24 23:04:06,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-09-24 23:04:06,285 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:06,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:06,406 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2024-09-24 23:04:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:04:06,407 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2024-09-24 23:04:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:06,408 INFO L225 Difference]: With dead ends: 87 [2024-09-24 23:04:06,408 INFO L226 Difference]: Without dead ends: 67 [2024-09-24 23:04:06,410 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-24 23:04:06,410 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:06,411 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 190 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-24 23:04:06,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2024-09-24 23:04:06,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-24 23:04:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-09-24 23:04:06,425 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2024-09-24 23:04:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:06,425 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-09-24 23:04:06,426 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:06,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-09-24 23:04:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-24 23:04:06,427 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:06,427 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:06,445 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:06,627 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-24 23:04:06,627 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:06,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:06,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1560540919, now seen corresponding path program 3 times [2024-09-24 23:04:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:06,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381601474] [2024-09-24 23:04:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:06,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:06,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:04:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:06,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:04:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:06,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:04:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:06,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381601474] [2024-09-24 23:04:06,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381601474] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697624612] [2024-09-24 23:04:06,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:04:06,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:06,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:06,772 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) [2024-09-24 23:04:06,774 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-24 23:04:06,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-24 23:04:06,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:06,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-24 23:04:06,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:06,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:07,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697624612] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:07,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:07,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-09-24 23:04:07,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075945870] [2024-09-24 23:04:07,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:07,092 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-24 23:04:07,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:07,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-24 23:04:07,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-09-24 23:04:07,094 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:07,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:07,205 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2024-09-24 23:04:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:04:07,205 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2024-09-24 23:04:07,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:07,206 INFO L225 Difference]: With dead ends: 87 [2024-09-24 23:04:07,206 INFO L226 Difference]: Without dead ends: 67 [2024-09-24 23:04:07,207 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 71 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-09-24 23:04:07,207 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:07,208 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 154 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:07,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-24 23:04:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2024-09-24 23:04:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-24 23:04:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-09-24 23:04:07,221 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2024-09-24 23:04:07,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:07,223 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-09-24 23:04:07,223 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:07,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:07,223 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-09-24 23:04:07,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-24 23:04:07,224 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:07,224 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:07,239 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-24 23:04:07,428 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:07,428 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:07,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:07,429 INFO L85 PathProgramCache]: Analyzing trace with hash 251296054, now seen corresponding path program 3 times [2024-09-24 23:04:07,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:07,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741139633] [2024-09-24 23:04:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:07,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:07,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:07,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:04:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:07,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:04:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:07,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:04:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:07,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:07,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741139633] [2024-09-24 23:04:07,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741139633] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:07,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810683409] [2024-09-24 23:04:07,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:04:07,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:07,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:07,577 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) [2024-09-24 23:04:07,578 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-24 23:04:07,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-24 23:04:07,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:07,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-24 23:04:07,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:07,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:07,898 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:07,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810683409] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:07,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:07,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2024-09-24 23:04:07,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872324108] [2024-09-24 23:04:07,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:07,900 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-24 23:04:07,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:07,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-24 23:04:07,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-09-24 23:04:07,901 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:08,006 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2024-09-24 23:04:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:04:08,007 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2024-09-24 23:04:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:08,008 INFO L225 Difference]: With dead ends: 88 [2024-09-24 23:04:08,008 INFO L226 Difference]: Without dead ends: 68 [2024-09-24 23:04:08,009 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-09-24 23:04:08,009 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:08,009 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 149 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:08,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-24 23:04:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2024-09-24 23:04:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.175) internal successors, (47), 41 states have internal predecessors, (47), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-24 23:04:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2024-09-24 23:04:08,021 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 40 [2024-09-24 23:04:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:08,022 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2024-09-24 23:04:08,022 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:08,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2024-09-24 23:04:08,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-24 23:04:08,024 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:08,024 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:08,041 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:08,228 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-24 23:04:08,229 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:08,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:08,229 INFO L85 PathProgramCache]: Analyzing trace with hash -74536894, now seen corresponding path program 6 times [2024-09-24 23:04:08,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:08,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157820025] [2024-09-24 23:04:08,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:08,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:04:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:04:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:04:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:08,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:08,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157820025] [2024-09-24 23:04:08,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157820025] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:08,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609716891] [2024-09-24 23:04:08,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:04:08,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:08,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:08,327 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) [2024-09-24 23:04:08,328 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-24 23:04:08,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-24 23:04:08,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:08,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-24 23:04:08,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:08,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:04:08,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609716891] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:08,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:08,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-24 23:04:08,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354965849] [2024-09-24 23:04:08,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:08,501 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-24 23:04:08,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:08,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-24 23:04:08,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-24 23:04:08,502 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:04:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:08,566 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2024-09-24 23:04:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-24 23:04:08,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2024-09-24 23:04:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:08,568 INFO L225 Difference]: With dead ends: 65 [2024-09-24 23:04:08,568 INFO L226 Difference]: Without dead ends: 63 [2024-09-24 23:04:08,568 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:04:08,569 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:08,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 155 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-24 23:04:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-09-24 23:04:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2024-09-24 23:04:08,576 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 41 [2024-09-24 23:04:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:08,576 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2024-09-24 23:04:08,576 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:04:08,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2024-09-24 23:04:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-24 23:04:08,577 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:08,577 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:08,593 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-24 23:04:08,778 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-24 23:04:08,778 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:08,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash 115327702, now seen corresponding path program 7 times [2024-09-24 23:04:08,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:08,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650977537] [2024-09-24 23:04:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:08,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:04:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:04:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:04:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:04:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:08,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:08,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650977537] [2024-09-24 23:04:08,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650977537] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:08,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4080888] [2024-09-24 23:04:08,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:04:08,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:08,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:08,970 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) [2024-09-24 23:04:08,973 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-24 23:04:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:09,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-24 23:04:09,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:09,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:09,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4080888] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:09,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:09,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-09-24 23:04:09,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614438289] [2024-09-24 23:04:09,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:09,386 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-24 23:04:09,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:09,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-24 23:04:09,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2024-09-24 23:04:09,387 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:09,503 INFO L93 Difference]: Finished difference Result 102 states and 119 transitions. [2024-09-24 23:04:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:04:09,504 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2024-09-24 23:04:09,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:09,505 INFO L225 Difference]: With dead ends: 102 [2024-09-24 23:04:09,505 INFO L226 Difference]: Without dead ends: 79 [2024-09-24 23:04:09,505 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 83 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2024-09-24 23:04:09,506 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:09,506 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 163 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-24 23:04:09,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2024-09-24 23:04:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:09,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-09-24 23:04:09,520 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2024-09-24 23:04:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:09,520 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-09-24 23:04:09,521 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:09,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:09,522 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-09-24 23:04:09,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-24 23:04:09,523 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:09,523 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:09,540 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-24 23:04:09,726 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-24 23:04:09,727 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:09,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash 73646677, now seen corresponding path program 4 times [2024-09-24 23:04:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:09,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345270437] [2024-09-24 23:04:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:09,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:09,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:09,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:04:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:09,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:04:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:09,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:04:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:09,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:04:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:09,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:09,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345270437] [2024-09-24 23:04:09,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345270437] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:09,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846970202] [2024-09-24 23:04:09,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:04:09,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:09,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:09,915 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) [2024-09-24 23:04:09,917 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-24 23:04:09,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:04:09,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:09,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-24 23:04:09,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:10,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:10,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846970202] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:10,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2024-09-24 23:04:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285116699] [2024-09-24 23:04:10,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:10,318 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-24 23:04:10,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:10,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-24 23:04:10,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2024-09-24 23:04:10,319 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:10,456 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2024-09-24 23:04:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:04:10,456 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2024-09-24 23:04:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:10,457 INFO L225 Difference]: With dead ends: 105 [2024-09-24 23:04:10,457 INFO L226 Difference]: Without dead ends: 82 [2024-09-24 23:04:10,458 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-09-24 23:04:10,458 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:10,459 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 172 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-24 23:04:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2024-09-24 23:04:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-09-24 23:04:10,470 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2024-09-24 23:04:10,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:10,470 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-09-24 23:04:10,470 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:10,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:10,471 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-09-24 23:04:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-24 23:04:10,471 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:10,471 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:10,488 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:10,672 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-24 23:04:10,672 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:10,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1867360522, now seen corresponding path program 5 times [2024-09-24 23:04:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:10,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884261468] [2024-09-24 23:04:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:10,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:10,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:10,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:04:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:10,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:04:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:10,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:04:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:10,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:04:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:10,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:10,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884261468] [2024-09-24 23:04:10,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884261468] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:10,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560364055] [2024-09-24 23:04:10,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:04:10,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:10,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:10,851 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) [2024-09-24 23:04:10,854 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-24 23:04:10,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-24 23:04:10,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:10,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-24 23:04:10,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:11,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:11,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560364055] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:11,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:11,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 27 [2024-09-24 23:04:11,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5882373] [2024-09-24 23:04:11,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:11,276 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-24 23:04:11,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:11,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-24 23:04:11,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2024-09-24 23:04:11,277 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:11,395 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2024-09-24 23:04:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:04:11,396 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2024-09-24 23:04:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:11,397 INFO L225 Difference]: With dead ends: 106 [2024-09-24 23:04:11,397 INFO L226 Difference]: Without dead ends: 83 [2024-09-24 23:04:11,398 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2024-09-24 23:04:11,398 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:11,398 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 164 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:11,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-24 23:04:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2024-09-24 23:04:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-09-24 23:04:11,410 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2024-09-24 23:04:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:11,411 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-09-24 23:04:11,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:11,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-09-24 23:04:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-24 23:04:11,412 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:11,412 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:11,424 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-24 23:04:11,612 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:11,613 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:11,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:11,613 INFO L85 PathProgramCache]: Analyzing trace with hash 702425653, now seen corresponding path program 6 times [2024-09-24 23:04:11,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:11,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070620883] [2024-09-24 23:04:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:11,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:11,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:11,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:04:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:11,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:04:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:11,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:04:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:11,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:04:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:11,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:11,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070620883] [2024-09-24 23:04:11,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070620883] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:11,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162358631] [2024-09-24 23:04:11,762 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:04:11,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:11,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:11,764 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) [2024-09-24 23:04:11,770 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-24 23:04:11,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-24 23:04:11,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:11,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-24 23:04:11,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:12,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:12,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162358631] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:12,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:12,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2024-09-24 23:04:12,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932372090] [2024-09-24 23:04:12,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:12,141 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-24 23:04:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-24 23:04:12,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2024-09-24 23:04:12,141 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:12,257 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2024-09-24 23:04:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:04:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2024-09-24 23:04:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:12,259 INFO L225 Difference]: With dead ends: 105 [2024-09-24 23:04:12,259 INFO L226 Difference]: Without dead ends: 82 [2024-09-24 23:04:12,259 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2024-09-24 23:04:12,260 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:12,260 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 221 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-24 23:04:12,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2024-09-24 23:04:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-09-24 23:04:12,268 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2024-09-24 23:04:12,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:12,268 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-09-24 23:04:12,269 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:12,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-09-24 23:04:12,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-24 23:04:12,270 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:12,270 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:12,284 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:12,470 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-24 23:04:12,470 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:12,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1616605974, now seen corresponding path program 4 times [2024-09-24 23:04:12,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:12,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952937944] [2024-09-24 23:04:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:12,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:12,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:12,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:04:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:12,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:04:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:12,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:04:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:12,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:04:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:12,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:12,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952937944] [2024-09-24 23:04:12,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952937944] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:12,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217647331] [2024-09-24 23:04:12,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:04:12,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:12,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:12,623 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) [2024-09-24 23:04:12,625 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-24 23:04:12,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:04:12,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:12,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-24 23:04:12,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:12,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:12,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217647331] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:12,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:12,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 25 [2024-09-24 23:04:12,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388715564] [2024-09-24 23:04:12,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:12,999 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-24 23:04:12,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:13,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-24 23:04:13,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2024-09-24 23:04:13,000 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:13,100 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2024-09-24 23:04:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:04:13,101 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2024-09-24 23:04:13,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:13,102 INFO L225 Difference]: With dead ends: 105 [2024-09-24 23:04:13,102 INFO L226 Difference]: Without dead ends: 82 [2024-09-24 23:04:13,102 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 87 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2024-09-24 23:04:13,103 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:13,103 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 176 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-24 23:04:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2024-09-24 23:04:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 49 states have internal predecessors, (56), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2024-09-24 23:04:13,112 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 48 [2024-09-24 23:04:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:13,112 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2024-09-24 23:04:13,112 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:13,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2024-09-24 23:04:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-24 23:04:13,113 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:13,114 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:13,129 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:13,317 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:13,317 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:13,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:13,318 INFO L85 PathProgramCache]: Analyzing trace with hash -972518079, now seen corresponding path program 8 times [2024-09-24 23:04:13,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:13,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023059828] [2024-09-24 23:04:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:13,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:13,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:13,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:04:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:13,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:04:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:13,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:04:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:13,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:04:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023059828] [2024-09-24 23:04:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023059828] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023575784] [2024-09-24 23:04:13,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:13,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:13,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:13,425 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) [2024-09-24 23:04:13,427 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-24 23:04:13,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:13,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:13,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-24 23:04:13,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:13,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:04:13,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023575784] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:13,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:13,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-24 23:04:13,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791228269] [2024-09-24 23:04:13,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:13,627 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-24 23:04:13,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:13,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-24 23:04:13,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:04:13,628 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-24 23:04:13,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:13,715 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2024-09-24 23:04:13,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-24 23:04:13,716 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 49 [2024-09-24 23:04:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:13,717 INFO L225 Difference]: With dead ends: 75 [2024-09-24 23:04:13,717 INFO L226 Difference]: Without dead ends: 73 [2024-09-24 23:04:13,717 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-09-24 23:04:13,718 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:13,718 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 127 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-24 23:04:13,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2024-09-24 23:04:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 53 states have (on average 1.150943396226415) internal successors, (61), 54 states have internal predecessors, (61), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:04:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2024-09-24 23:04:13,727 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 49 [2024-09-24 23:04:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:13,727 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2024-09-24 23:04:13,727 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-24 23:04:13,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:13,728 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2024-09-24 23:04:13,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-24 23:04:13,729 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:13,729 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:13,746 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-24 23:04:13,929 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:13,930 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:13,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:13,930 INFO L85 PathProgramCache]: Analyzing trace with hash 931729655, now seen corresponding path program 9 times [2024-09-24 23:04:13,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:13,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406381475] [2024-09-24 23:04:13,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:13,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:14,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:14,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:04:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:14,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:04:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:14,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:04:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:14,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:04:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:14,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:04:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406381475] [2024-09-24 23:04:14,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406381475] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:14,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571022881] [2024-09-24 23:04:14,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:04:14,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:14,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:14,121 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) [2024-09-24 23:04:14,122 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-24 23:04:14,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-24 23:04:14,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:14,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-24 23:04:14,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:14,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:14,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571022881] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:14,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:14,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-09-24 23:04:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112132466] [2024-09-24 23:04:14,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:14,602 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-24 23:04:14,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-24 23:04:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=849, Unknown=0, NotChecked=0, Total=1056 [2024-09-24 23:04:14,603 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:14,751 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2024-09-24 23:04:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-24 23:04:14,751 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-24 23:04:14,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:14,752 INFO L225 Difference]: With dead ends: 119 [2024-09-24 23:04:14,752 INFO L226 Difference]: Without dead ends: 93 [2024-09-24 23:04:14,753 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 97 SyntacticMatches, 12 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2024-09-24 23:04:14,753 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:14,754 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 248 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-24 23:04:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 70. [2024-09-24 23:04:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:04:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-09-24 23:04:14,764 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2024-09-24 23:04:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:14,765 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-09-24 23:04:14,765 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:14,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-09-24 23:04:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-24 23:04:14,766 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:14,766 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:14,783 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:14,966 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-24 23:04:14,966 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:14,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:14,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1164893834, now seen corresponding path program 7 times [2024-09-24 23:04:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:14,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990661451] [2024-09-24 23:04:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:14,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:15,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:15,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:04:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:15,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:04:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:15,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:04:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:15,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:04:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:15,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:04:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:15,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:15,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990661451] [2024-09-24 23:04:15,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990661451] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:15,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622881479] [2024-09-24 23:04:15,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:04:15,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:15,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:15,131 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) [2024-09-24 23:04:15,133 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-24 23:04:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:15,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-24 23:04:15,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:15,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:15,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622881479] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:15,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:15,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-09-24 23:04:15,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538607475] [2024-09-24 23:04:15,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:15,613 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-24 23:04:15,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:15,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-24 23:04:15,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2024-09-24 23:04:15,614 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 32 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:15,735 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2024-09-24 23:04:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-24 23:04:15,735 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-24 23:04:15,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:15,736 INFO L225 Difference]: With dead ends: 123 [2024-09-24 23:04:15,736 INFO L226 Difference]: Without dead ends: 97 [2024-09-24 23:04:15,737 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 98 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2024-09-24 23:04:15,737 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:15,737 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 212 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-24 23:04:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2024-09-24 23:04:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:04:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-09-24 23:04:15,753 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2024-09-24 23:04:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:15,753 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-09-24 23:04:15,753 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:15,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-09-24 23:04:15,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-24 23:04:15,754 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:15,754 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:15,767 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:15,955 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:15,955 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:15,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:15,956 INFO L85 PathProgramCache]: Analyzing trace with hash -401242857, now seen corresponding path program 8 times [2024-09-24 23:04:15,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:15,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839331403] [2024-09-24 23:04:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:15,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:16,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:16,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:04:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:16,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:04:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:16,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:04:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:16,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:04:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:16,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:04:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:16,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839331403] [2024-09-24 23:04:16,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839331403] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097037007] [2024-09-24 23:04:16,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:16,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:16,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:16,129 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) [2024-09-24 23:04:16,131 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-24 23:04:16,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:16,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:16,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-24 23:04:16,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:16,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:16,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097037007] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:16,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:16,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2024-09-24 23:04:16,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228162006] [2024-09-24 23:04:16,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:16,574 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-24 23:04:16,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:16,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-24 23:04:16,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2024-09-24 23:04:16,575 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:16,703 INFO L93 Difference]: Finished difference Result 125 states and 145 transitions. [2024-09-24 23:04:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-24 23:04:16,703 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-24 23:04:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:16,704 INFO L225 Difference]: With dead ends: 125 [2024-09-24 23:04:16,704 INFO L226 Difference]: Without dead ends: 99 [2024-09-24 23:04:16,705 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 99 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2024-09-24 23:04:16,705 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:16,706 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 256 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-24 23:04:16,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2024-09-24 23:04:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:04:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-09-24 23:04:16,716 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2024-09-24 23:04:16,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:16,717 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-09-24 23:04:16,717 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:16,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:16,717 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-09-24 23:04:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-24 23:04:16,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:16,718 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:16,730 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:16,918 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-24 23:04:16,918 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:16,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash 177580374, now seen corresponding path program 9 times [2024-09-24 23:04:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:16,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215899260] [2024-09-24 23:04:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:16,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:17,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:17,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:04:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:17,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:04:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:17,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:04:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:17,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:04:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:17,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:04:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:17,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215899260] [2024-09-24 23:04:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215899260] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762833996] [2024-09-24 23:04:17,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:04:17,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:17,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:17,090 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) [2024-09-24 23:04:17,092 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-24 23:04:17,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-24 23:04:17,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:17,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-24 23:04:17,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:17,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:17,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762833996] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:17,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:17,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 30 [2024-09-24 23:04:17,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580299469] [2024-09-24 23:04:17,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:17,503 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-24 23:04:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:17,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-24 23:04:17,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-09-24 23:04:17,504 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:17,616 INFO L93 Difference]: Finished difference Result 125 states and 145 transitions. [2024-09-24 23:04:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-24 23:04:17,616 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-24 23:04:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:17,617 INFO L225 Difference]: With dead ends: 125 [2024-09-24 23:04:17,618 INFO L226 Difference]: Without dead ends: 99 [2024-09-24 23:04:17,618 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 100 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2024-09-24 23:04:17,619 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:17,619 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 210 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:17,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-24 23:04:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2024-09-24 23:04:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:04:17,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-09-24 23:04:17,629 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2024-09-24 23:04:17,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:17,630 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-09-24 23:04:17,630 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:17,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:17,630 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-09-24 23:04:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-24 23:04:17,631 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:17,631 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:17,646 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-24 23:04:17,831 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-24 23:04:17,831 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:17,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:17,832 INFO L85 PathProgramCache]: Analyzing trace with hash 57704759, now seen corresponding path program 10 times [2024-09-24 23:04:17,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:17,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035912010] [2024-09-24 23:04:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:17,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:04:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:04:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:04:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:04:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:04:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:18,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:18,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035912010] [2024-09-24 23:04:18,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035912010] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:18,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755203703] [2024-09-24 23:04:18,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:04:18,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:18,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:18,019 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) [2024-09-24 23:04:18,021 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-24 23:04:18,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:04:18,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:18,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-24 23:04:18,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:18,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:18,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755203703] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:18,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:18,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 29 [2024-09-24 23:04:18,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087356065] [2024-09-24 23:04:18,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:18,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-24 23:04:18,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:18,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-24 23:04:18,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2024-09-24 23:04:18,356 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:18,475 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2024-09-24 23:04:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-24 23:04:18,476 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-24 23:04:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:18,477 INFO L225 Difference]: With dead ends: 123 [2024-09-24 23:04:18,477 INFO L226 Difference]: Without dead ends: 97 [2024-09-24 23:04:18,477 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 101 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2024-09-24 23:04:18,478 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:18,478 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 219 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:18,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-24 23:04:18,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2024-09-24 23:04:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:04:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-09-24 23:04:18,491 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2024-09-24 23:04:18,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:18,491 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-09-24 23:04:18,491 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:18,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-09-24 23:04:18,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-24 23:04:18,492 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:18,492 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:18,508 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-24 23:04:18,693 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-24 23:04:18,693 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:18,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:18,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1747277514, now seen corresponding path program 5 times [2024-09-24 23:04:18,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:18,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88119518] [2024-09-24 23:04:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:18,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:04:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:04:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:04:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:04:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:04:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:18,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:18,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88119518] [2024-09-24 23:04:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88119518] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:18,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269141588] [2024-09-24 23:04:18,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:04:18,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:18,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:18,885 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) [2024-09-24 23:04:18,888 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-24 23:04:18,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-24 23:04:18,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:18,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-24 23:04:18,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:19,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:19,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269141588] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:19,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:19,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2024-09-24 23:04:19,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844064701] [2024-09-24 23:04:19,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:19,311 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-24 23:04:19,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-24 23:04:19,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2024-09-24 23:04:19,313 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:19,451 INFO L93 Difference]: Finished difference Result 122 states and 143 transitions. [2024-09-24 23:04:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-24 23:04:19,452 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2024-09-24 23:04:19,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:19,453 INFO L225 Difference]: With dead ends: 122 [2024-09-24 23:04:19,453 INFO L226 Difference]: Without dead ends: 96 [2024-09-24 23:04:19,454 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 102 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-09-24 23:04:19,454 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:19,455 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 189 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:19,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-24 23:04:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2024-09-24 23:04:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 57 states have internal predecessors, (65), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:04:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2024-09-24 23:04:19,471 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 56 [2024-09-24 23:04:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:19,471 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2024-09-24 23:04:19,471 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:04:19,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2024-09-24 23:04:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-24 23:04:19,472 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:19,472 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:19,488 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:19,676 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-24 23:04:19,677 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:19,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:19,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1189232738, now seen corresponding path program 10 times [2024-09-24 23:04:19,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:19,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004153510] [2024-09-24 23:04:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:19,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:19,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:19,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-24 23:04:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:19,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:04:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:19,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:04:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:19,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:04:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:19,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:04:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:19,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:19,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004153510] [2024-09-24 23:04:19,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004153510] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:19,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045760809] [2024-09-24 23:04:19,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:04:19,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:19,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:19,817 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) [2024-09-24 23:04:19,818 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-24 23:04:19,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:04:19,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:19,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-24 23:04:19,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:19,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:04:20,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045760809] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:20,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:20,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-09-24 23:04:20,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477561825] [2024-09-24 23:04:20,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:20,027 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-24 23:04:20,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:20,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-24 23:04:20,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-24 23:04:20,028 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:20,103 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2024-09-24 23:04:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-24 23:04:20,103 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 57 [2024-09-24 23:04:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:20,104 INFO L225 Difference]: With dead ends: 85 [2024-09-24 23:04:20,104 INFO L226 Difference]: Without dead ends: 83 [2024-09-24 23:04:20,104 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 117 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-09-24 23:04:20,105 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:20,105 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 181 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-24 23:04:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-09-24 23:04:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2024-09-24 23:04:20,114 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 57 [2024-09-24 23:04:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:20,114 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2024-09-24 23:04:20,114 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:04:20,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2024-09-24 23:04:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-24 23:04:20,115 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:20,115 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:20,130 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:20,315 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:20,316 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:20,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1762212170, now seen corresponding path program 11 times [2024-09-24 23:04:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:20,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489893699] [2024-09-24 23:04:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:20,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:20,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-24 23:04:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:20,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:04:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:20,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:04:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:20,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:04:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:20,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:04:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:20,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:04:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:20,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489893699] [2024-09-24 23:04:20,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489893699] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297599783] [2024-09-24 23:04:20,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:04:20,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:20,523 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) [2024-09-24 23:04:20,524 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-24 23:04:20,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-24 23:04:20,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:20,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-24 23:04:20,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:20,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:21,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297599783] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:21,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:21,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-09-24 23:04:21,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065423340] [2024-09-24 23:04:21,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:21,040 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-24 23:04:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-24 23:04:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2024-09-24 23:04:21,041 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:21,188 INFO L93 Difference]: Finished difference Result 136 states and 159 transitions. [2024-09-24 23:04:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-24 23:04:21,188 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-24 23:04:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:21,189 INFO L225 Difference]: With dead ends: 136 [2024-09-24 23:04:21,189 INFO L226 Difference]: Without dead ends: 107 [2024-09-24 23:04:21,190 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 111 SyntacticMatches, 14 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=1139, Unknown=0, NotChecked=0, Total=1406 [2024-09-24 23:04:21,191 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:21,191 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 183 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-24 23:04:21,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 80. [2024-09-24 23:04:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-24 23:04:21,203 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-24 23:04:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:21,203 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-24 23:04:21,203 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:21,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-24 23:04:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-24 23:04:21,204 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:21,204 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:21,220 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-24 23:04:21,405 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-24 23:04:21,405 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:21,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1726081077, now seen corresponding path program 11 times [2024-09-24 23:04:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:21,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747747891] [2024-09-24 23:04:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:21,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:21,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:21,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-24 23:04:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:21,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:04:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:21,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:04:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:21,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:04:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:21,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:04:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:21,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:04:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 53 proven. 32 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:21,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:21,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747747891] [2024-09-24 23:04:21,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747747891] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:21,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132896713] [2024-09-24 23:04:21,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:04:21,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:21,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:21,597 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) [2024-09-24 23:04:21,599 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-24 23:04:21,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-24 23:04:21,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:21,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-24 23:04:21,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:21,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:22,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132896713] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:22,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:22,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 36 [2024-09-24 23:04:22,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820996648] [2024-09-24 23:04:22,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:22,060 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-24 23:04:22,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-24 23:04:22,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2024-09-24 23:04:22,061 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 36 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:22,207 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2024-09-24 23:04:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-24 23:04:22,208 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-24 23:04:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:22,209 INFO L225 Difference]: With dead ends: 141 [2024-09-24 23:04:22,209 INFO L226 Difference]: Without dead ends: 112 [2024-09-24 23:04:22,209 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=1087, Unknown=0, NotChecked=0, Total=1332 [2024-09-24 23:04:22,210 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:22,210 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 194 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-24 23:04:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2024-09-24 23:04:22,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-24 23:04:22,224 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-24 23:04:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:22,224 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-24 23:04:22,225 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:22,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-24 23:04:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-24 23:04:22,225 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:22,225 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:22,237 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:22,426 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-24 23:04:22,426 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:22,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:22,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2040718634, now seen corresponding path program 12 times [2024-09-24 23:04:22,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:22,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009572302] [2024-09-24 23:04:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:22,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:22,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:22,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-24 23:04:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:22,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:04:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:22,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:04:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:22,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:04:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:22,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:04:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:22,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:04:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 53 proven. 29 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:22,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:22,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009572302] [2024-09-24 23:04:22,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009572302] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:22,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373608439] [2024-09-24 23:04:22,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:04:22,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:22,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:22,624 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) [2024-09-24 23:04:22,626 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-24 23:04:22,668 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-24 23:04:22,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:22,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-24 23:04:22,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:22,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:23,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373608439] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:23,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:23,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 35 [2024-09-24 23:04:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910709811] [2024-09-24 23:04:23,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:23,095 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-24 23:04:23,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:23,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-24 23:04:23,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2024-09-24 23:04:23,096 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 35 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:23,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:23,277 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2024-09-24 23:04:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-24 23:04:23,277 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-24 23:04:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:23,278 INFO L225 Difference]: With dead ends: 144 [2024-09-24 23:04:23,278 INFO L226 Difference]: Without dead ends: 115 [2024-09-24 23:04:23,279 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 113 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=1033, Unknown=0, NotChecked=0, Total=1260 [2024-09-24 23:04:23,280 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:23,280 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 230 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:23,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-24 23:04:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2024-09-24 23:04:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-24 23:04:23,296 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-24 23:04:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:23,296 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-24 23:04:23,296 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:23,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-24 23:04:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-24 23:04:23,297 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:23,297 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:23,309 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:23,500 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:23,500 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:23,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1162907669, now seen corresponding path program 13 times [2024-09-24 23:04:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:23,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830722816] [2024-09-24 23:04:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:23,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:23,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:23,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-24 23:04:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:23,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:04:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:23,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:04:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:23,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:04:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:23,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:04:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:23,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:04:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 53 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:23,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:23,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830722816] [2024-09-24 23:04:23,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830722816] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:23,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151698933] [2024-09-24 23:04:23,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:04:23,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:23,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:23,780 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) [2024-09-24 23:04:23,781 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-24 23:04:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:23,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-24 23:04:23,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 69 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:24,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 69 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:24,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151698933] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:24,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:24,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 34 [2024-09-24 23:04:24,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87928668] [2024-09-24 23:04:24,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:24,213 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-24 23:04:24,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-24 23:04:24,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=917, Unknown=0, NotChecked=0, Total=1122 [2024-09-24 23:04:24,214 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:24,386 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2024-09-24 23:04:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-24 23:04:24,387 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-24 23:04:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:24,388 INFO L225 Difference]: With dead ends: 145 [2024-09-24 23:04:24,388 INFO L226 Difference]: Without dead ends: 116 [2024-09-24 23:04:24,389 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 114 SyntacticMatches, 14 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2024-09-24 23:04:24,389 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:24,389 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 229 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-24 23:04:24,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2024-09-24 23:04:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:24,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-24 23:04:24,407 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-24 23:04:24,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:24,407 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-24 23:04:24,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:24,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-24 23:04:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-24 23:04:24,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:24,408 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:24,426 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-24 23:04:24,609 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-09-24 23:04:24,609 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:24,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:24,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1920338186, now seen corresponding path program 14 times [2024-09-24 23:04:24,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:24,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270020400] [2024-09-24 23:04:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:24,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:24,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:24,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-24 23:04:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:24,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:04:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:24,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:04:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:24,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:04:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:24,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:04:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:24,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:04:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 53 proven. 29 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:24,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:24,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270020400] [2024-09-24 23:04:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270020400] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:24,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284258179] [2024-09-24 23:04:24,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:24,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:24,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:24,844 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) [2024-09-24 23:04:24,844 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-24 23:04:24,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:24,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:24,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-24 23:04:24,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:25,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:25,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284258179] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:25,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:25,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 33 [2024-09-24 23:04:25,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648907595] [2024-09-24 23:04:25,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:25,357 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-24 23:04:25,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:25,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-24 23:04:25,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056 [2024-09-24 23:04:25,359 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:25,529 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2024-09-24 23:04:25,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-24 23:04:25,530 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-24 23:04:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:25,531 INFO L225 Difference]: With dead ends: 144 [2024-09-24 23:04:25,531 INFO L226 Difference]: Without dead ends: 115 [2024-09-24 23:04:25,532 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 115 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2024-09-24 23:04:25,532 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:25,532 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 217 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-24 23:04:25,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2024-09-24 23:04:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-24 23:04:25,558 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-24 23:04:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:25,558 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-24 23:04:25,558 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:25,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-24 23:04:25,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-24 23:04:25,559 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:25,559 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:25,573 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:25,760 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:25,760 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:25,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:25,760 INFO L85 PathProgramCache]: Analyzing trace with hash 889696245, now seen corresponding path program 15 times [2024-09-24 23:04:25,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:25,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877066434] [2024-09-24 23:04:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:25,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:25,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:25,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-24 23:04:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:25,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:04:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:25,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:04:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:25,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:04:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:25,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:04:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:25,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:04:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 53 proven. 32 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:25,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:25,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877066434] [2024-09-24 23:04:25,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877066434] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:25,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992712053] [2024-09-24 23:04:25,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:04:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:25,959 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) [2024-09-24 23:04:25,961 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-24 23:04:26,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-24 23:04:26,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:26,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-24 23:04:26,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:26,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:26,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992712053] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:26,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:26,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 32 [2024-09-24 23:04:26,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424516267] [2024-09-24 23:04:26,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:26,470 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-24 23:04:26,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-24 23:04:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2024-09-24 23:04:26,471 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:26,652 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2024-09-24 23:04:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-24 23:04:26,652 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-24 23:04:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:26,653 INFO L225 Difference]: With dead ends: 141 [2024-09-24 23:04:26,653 INFO L226 Difference]: Without dead ends: 112 [2024-09-24 23:04:26,653 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2024-09-24 23:04:26,654 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:26,654 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 260 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-24 23:04:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2024-09-24 23:04:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-09-24 23:04:26,672 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2024-09-24 23:04:26,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:26,673 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-09-24 23:04:26,673 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:26,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:26,673 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-09-24 23:04:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-24 23:04:26,674 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:26,674 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:26,691 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-24 23:04:26,878 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-24 23:04:26,879 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:26,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2088721174, now seen corresponding path program 6 times [2024-09-24 23:04:26,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:26,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219875317] [2024-09-24 23:04:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:26,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:27,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:27,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-24 23:04:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:27,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:04:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:27,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:04:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:27,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:04:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:27,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:04:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:27,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:04:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:27,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219875317] [2024-09-24 23:04:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219875317] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913383351] [2024-09-24 23:04:27,091 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:04:27,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:27,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:27,093 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) [2024-09-24 23:04:27,094 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-24 23:04:27,141 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-24 23:04:27,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:27,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-24 23:04:27,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:27,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:27,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913383351] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:27,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:27,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 31 [2024-09-24 23:04:27,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43094681] [2024-09-24 23:04:27,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:27,553 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-24 23:04:27,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:27,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-24 23:04:27,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2024-09-24 23:04:27,554 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 31 states have internal predecessors, (58), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:27,691 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2024-09-24 23:04:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-24 23:04:27,691 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 31 states have internal predecessors, (58), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 64 [2024-09-24 23:04:27,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:27,693 INFO L225 Difference]: With dead ends: 139 [2024-09-24 23:04:27,693 INFO L226 Difference]: Without dead ends: 110 [2024-09-24 23:04:27,693 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 117 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2024-09-24 23:04:27,694 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:27,694 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 201 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:27,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-09-24 23:04:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2024-09-24 23:04:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.15625) internal successors, (74), 65 states have internal predecessors, (74), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2024-09-24 23:04:27,719 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 64 [2024-09-24 23:04:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:27,719 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2024-09-24 23:04:27,719 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 31 states have internal predecessors, (58), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:04:27,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2024-09-24 23:04:27,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-24 23:04:27,720 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:27,720 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:27,737 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:27,925 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-24 23:04:27,926 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:27,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash -968139999, now seen corresponding path program 12 times [2024-09-24 23:04:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:27,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199615815] [2024-09-24 23:04:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-24 23:04:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:04:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:04:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:04:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:04:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:04:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:28,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:28,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199615815] [2024-09-24 23:04:28,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199615815] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:28,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993056986] [2024-09-24 23:04:28,046 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:04:28,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:28,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:28,048 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:28,049 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-24 23:04:28,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-24 23:04:28,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:28,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-24 23:04:28,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:28,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:04:28,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993056986] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:28,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:28,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-24 23:04:28,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774970729] [2024-09-24 23:04:28,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:28,260 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-24 23:04:28,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:28,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-24 23:04:28,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-09-24 23:04:28,261 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:04:28,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:28,345 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2024-09-24 23:04:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:04:28,346 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 65 [2024-09-24 23:04:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:28,347 INFO L225 Difference]: With dead ends: 95 [2024-09-24 23:04:28,347 INFO L226 Difference]: Without dead ends: 93 [2024-09-24 23:04:28,347 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:04:28,347 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:28,348 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 175 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-24 23:04:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2024-09-24 23:04:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2024-09-24 23:04:28,362 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 65 [2024-09-24 23:04:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:28,362 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2024-09-24 23:04:28,362 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:04:28,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2024-09-24 23:04:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-24 23:04:28,363 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:28,363 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:28,380 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:28,564 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-24 23:04:28,564 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:28,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:28,564 INFO L85 PathProgramCache]: Analyzing trace with hash -16980201, now seen corresponding path program 13 times [2024-09-24 23:04:28,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:28,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751775598] [2024-09-24 23:04:28,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:28,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-24 23:04:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:04:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:04:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:04:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:04:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:04:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:04:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:28,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751775598] [2024-09-24 23:04:28,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751775598] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171723578] [2024-09-24 23:04:28,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:04:28,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:28,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:28,820 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:28,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-24 23:04:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:28,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-24 23:04:28,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:29,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:29,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171723578] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:29,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:29,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-09-24 23:04:29,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138790680] [2024-09-24 23:04:29,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:29,401 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-24 23:04:29,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:29,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-24 23:04:29,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1323, Unknown=0, NotChecked=0, Total=1640 [2024-09-24 23:04:29,402 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 41 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 41 states have internal predecessors, (70), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:29,592 INFO L93 Difference]: Finished difference Result 153 states and 179 transitions. [2024-09-24 23:04:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-24 23:04:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 41 states have internal predecessors, (70), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-24 23:04:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:29,594 INFO L225 Difference]: With dead ends: 153 [2024-09-24 23:04:29,594 INFO L226 Difference]: Without dead ends: 121 [2024-09-24 23:04:29,595 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 125 SyntacticMatches, 16 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=325, Invalid=1397, Unknown=0, NotChecked=0, Total=1722 [2024-09-24 23:04:29,595 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:29,596 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 308 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-09-24 23:04:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 90. [2024-09-24 23:04:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-24 23:04:29,619 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-24 23:04:29,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:29,620 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-24 23:04:29,620 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 41 states have internal predecessors, (70), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:29,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-24 23:04:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-24 23:04:29,621 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:29,621 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:29,638 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:29,821 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-24 23:04:29,822 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:29,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:29,822 INFO L85 PathProgramCache]: Analyzing trace with hash 338303382, now seen corresponding path program 16 times [2024-09-24 23:04:29,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:29,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114922889] [2024-09-24 23:04:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:29,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:30,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:30,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-24 23:04:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:30,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:04:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:30,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:04:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:30,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:04:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:30,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:04:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:30,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:04:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:30,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:04:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 72 proven. 41 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:30,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:30,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114922889] [2024-09-24 23:04:30,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114922889] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:30,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452046278] [2024-09-24 23:04:30,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:04:30,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:30,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:30,050 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:30,051 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-24 23:04:30,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:04:30,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:30,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-24 23:04:30,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 91 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:30,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 91 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:30,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452046278] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:30,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:30,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-09-24 23:04:30,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481060955] [2024-09-24 23:04:30,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:30,602 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-24 23:04:30,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:30,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-24 23:04:30,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2024-09-24 23:04:30,603 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:30,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:30,786 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2024-09-24 23:04:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-24 23:04:30,787 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-24 23:04:30,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:30,788 INFO L225 Difference]: With dead ends: 159 [2024-09-24 23:04:30,788 INFO L226 Difference]: Without dead ends: 127 [2024-09-24 23:04:30,788 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 16 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=1340, Unknown=0, NotChecked=0, Total=1640 [2024-09-24 23:04:30,789 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:30,789 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 278 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-24 23:04:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 90. [2024-09-24 23:04:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-24 23:04:30,808 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-24 23:04:30,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:30,808 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-24 23:04:30,808 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:30,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-24 23:04:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-24 23:04:30,809 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:30,809 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:30,825 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:31,009 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:31,010 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:31,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash 626858807, now seen corresponding path program 17 times [2024-09-24 23:04:31,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:31,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948368904] [2024-09-24 23:04:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:31,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:31,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:31,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-24 23:04:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:31,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:04:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:31,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:04:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:31,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:04:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:31,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:04:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:31,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:04:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:31,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:04:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 72 proven. 37 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:31,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:31,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948368904] [2024-09-24 23:04:31,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948368904] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:31,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40167146] [2024-09-24 23:04:31,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:04:31,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:31,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:31,246 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:31,247 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-24 23:04:31,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-24 23:04:31,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:31,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-24 23:04:31,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:31,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:31,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40167146] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:31,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:31,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 39 [2024-09-24 23:04:31,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499622884] [2024-09-24 23:04:31,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:31,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-24 23:04:31,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-24 23:04:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1211, Unknown=0, NotChecked=0, Total=1482 [2024-09-24 23:04:31,800 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 39 states have internal predecessors, (68), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:31,951 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2024-09-24 23:04:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-24 23:04:31,952 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 39 states have internal predecessors, (68), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-24 23:04:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:31,954 INFO L225 Difference]: With dead ends: 163 [2024-09-24 23:04:31,954 INFO L226 Difference]: Without dead ends: 131 [2024-09-24 23:04:31,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 127 SyntacticMatches, 16 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=1281, Unknown=0, NotChecked=0, Total=1560 [2024-09-24 23:04:31,955 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:31,955 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 172 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-24 23:04:31,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 90. [2024-09-24 23:04:31,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:31,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-24 23:04:31,980 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-24 23:04:31,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:31,981 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-24 23:04:31,981 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 39 states have internal predecessors, (68), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:31,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-24 23:04:31,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-24 23:04:31,982 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:31,982 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:31,999 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:32,183 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-24 23:04:32,183 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:32,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash 81977718, now seen corresponding path program 18 times [2024-09-24 23:04:32,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:32,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267367138] [2024-09-24 23:04:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:32,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:32,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:32,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-24 23:04:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:32,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:04:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:32,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:04:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:32,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:04:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:32,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:04:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:32,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:04:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:32,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:04:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 72 proven. 35 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:32,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:32,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267367138] [2024-09-24 23:04:32,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267367138] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:32,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487845885] [2024-09-24 23:04:32,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:04:32,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:32,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:32,392 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:32,394 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-24 23:04:32,440 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-24 23:04:32,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:32,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-24 23:04:32,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:32,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:32,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487845885] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:32,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:32,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 38 [2024-09-24 23:04:32,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258982758] [2024-09-24 23:04:32,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:32,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-24 23:04:32,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:32,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-24 23:04:32,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2024-09-24 23:04:32,982 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 38 states, 38 states have (on average 1.763157894736842) internal successors, (67), 38 states have internal predecessors, (67), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:33,168 INFO L93 Difference]: Finished difference Result 165 states and 191 transitions. [2024-09-24 23:04:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-24 23:04:33,168 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.763157894736842) internal successors, (67), 38 states have internal predecessors, (67), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-24 23:04:33,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:33,169 INFO L225 Difference]: With dead ends: 165 [2024-09-24 23:04:33,169 INFO L226 Difference]: Without dead ends: 133 [2024-09-24 23:04:33,170 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=1220, Unknown=0, NotChecked=0, Total=1482 [2024-09-24 23:04:33,170 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:33,171 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 242 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-24 23:04:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 90. [2024-09-24 23:04:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-24 23:04:33,193 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-24 23:04:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:33,193 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-24 23:04:33,194 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.763157894736842) internal successors, (67), 38 states have internal predecessors, (67), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:33,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-24 23:04:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-24 23:04:33,194 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:33,194 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:33,207 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:33,395 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-24 23:04:33,395 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:33,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1736714409, now seen corresponding path program 19 times [2024-09-24 23:04:33,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:33,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723407129] [2024-09-24 23:04:33,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:33,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:33,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:33,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-24 23:04:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:33,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:04:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:33,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:04:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:33,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:04:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:33,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:04:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:33,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:04:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:33,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:04:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 72 proven. 35 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:33,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:33,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723407129] [2024-09-24 23:04:33,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723407129] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:33,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110170319] [2024-09-24 23:04:33,658 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:04:33,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:33,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:33,660 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:33,663 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-24 23:04:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:33,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-24 23:04:33,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:34,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:34,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110170319] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:34,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:34,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 37 [2024-09-24 23:04:34,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660020659] [2024-09-24 23:04:34,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:34,196 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-24 23:04:34,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:34,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-24 23:04:34,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1091, Unknown=0, NotChecked=0, Total=1332 [2024-09-24 23:04:34,197 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 37 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 37 states have internal predecessors, (66), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:34,382 INFO L93 Difference]: Finished difference Result 165 states and 191 transitions. [2024-09-24 23:04:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-24 23:04:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 37 states have internal predecessors, (66), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-24 23:04:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:34,384 INFO L225 Difference]: With dead ends: 165 [2024-09-24 23:04:34,384 INFO L226 Difference]: Without dead ends: 133 [2024-09-24 23:04:34,385 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=249, Invalid=1157, Unknown=0, NotChecked=0, Total=1406 [2024-09-24 23:04:34,385 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:34,385 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 194 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-24 23:04:34,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 90. [2024-09-24 23:04:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:34,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-24 23:04:34,411 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-24 23:04:34,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:34,411 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-24 23:04:34,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 37 states have internal predecessors, (66), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:34,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:34,412 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-24 23:04:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-24 23:04:34,412 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:34,412 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:34,429 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:34,616 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-24 23:04:34,617 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:34,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:34,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1391206742, now seen corresponding path program 20 times [2024-09-24 23:04:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:34,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232046772] [2024-09-24 23:04:34,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:34,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:34,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:34,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-24 23:04:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:34,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:04:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:34,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:04:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:34,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:04:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:34,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:04:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:34,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:04:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:34,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:04:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 72 proven. 37 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:34,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:34,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232046772] [2024-09-24 23:04:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232046772] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907231295] [2024-09-24 23:04:34,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:34,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:34,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:34,870 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:34,872 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-24 23:04:34,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:34,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:34,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-24 23:04:34,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:35,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:35,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907231295] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:35,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:35,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 36 [2024-09-24 23:04:35,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524732394] [2024-09-24 23:04:35,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:35,345 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-24 23:04:35,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:35,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-24 23:04:35,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2024-09-24 23:04:35,346 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 36 states have internal predecessors, (65), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:35,577 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2024-09-24 23:04:35,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-24 23:04:35,577 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 36 states have internal predecessors, (65), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-24 23:04:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:35,579 INFO L225 Difference]: With dead ends: 163 [2024-09-24 23:04:35,579 INFO L226 Difference]: Without dead ends: 131 [2024-09-24 23:04:35,579 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2024-09-24 23:04:35,580 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:35,580 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 262 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-24 23:04:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 90. [2024-09-24 23:04:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-24 23:04:35,605 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-24 23:04:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:35,605 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-24 23:04:35,606 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 36 states have internal predecessors, (65), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:35,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-24 23:04:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-24 23:04:35,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:35,607 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:35,622 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-24 23:04:35,807 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-09-24 23:04:35,808 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:35,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash 106634103, now seen corresponding path program 21 times [2024-09-24 23:04:35,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:35,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649933159] [2024-09-24 23:04:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:36,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:36,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-24 23:04:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:36,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:04:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:36,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:04:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:36,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:04:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:36,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:04:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:36,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:04:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:36,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:04:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 72 proven. 41 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:36,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649933159] [2024-09-24 23:04:36,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649933159] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:36,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825077435] [2024-09-24 23:04:36,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:04:36,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:36,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:36,015 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:36,016 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-24 23:04:36,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-09-24 23:04:36,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:36,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-24 23:04:36,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 91 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:36,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 91 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:36,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825077435] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:36,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:36,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 35 [2024-09-24 23:04:36,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413544285] [2024-09-24 23:04:36,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:36,521 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-24 23:04:36,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:36,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-24 23:04:36,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2024-09-24 23:04:36,522 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:36,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:36,698 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2024-09-24 23:04:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-24 23:04:36,699 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-24 23:04:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:36,700 INFO L225 Difference]: With dead ends: 159 [2024-09-24 23:04:36,700 INFO L226 Difference]: Without dead ends: 127 [2024-09-24 23:04:36,700 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 131 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2024-09-24 23:04:36,701 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:36,701 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 234 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:36,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-24 23:04:36,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 90. [2024-09-24 23:04:36,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-09-24 23:04:36,727 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2024-09-24 23:04:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:36,727 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-09-24 23:04:36,727 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:36,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-09-24 23:04:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-24 23:04:36,728 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:36,728 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:36,740 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-09-24 23:04:36,928 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:36,928 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:36,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:36,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2013013706, now seen corresponding path program 7 times [2024-09-24 23:04:36,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:36,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290518857] [2024-09-24 23:04:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:36,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:37,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:37,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-24 23:04:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:37,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:04:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:37,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:04:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:37,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:04:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:37,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:04:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:37,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:04:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:37,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:04:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:37,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:37,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290518857] [2024-09-24 23:04:37,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290518857] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:37,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674226222] [2024-09-24 23:04:37,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:04:37,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:37,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:37,119 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:37,120 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-24 23:04:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:37,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-24 23:04:37,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:37,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:37,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674226222] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:37,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:37,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 34 [2024-09-24 23:04:37,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109474730] [2024-09-24 23:04:37,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:37,623 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-24 23:04:37,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:37,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-24 23:04:37,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2024-09-24 23:04:37,623 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 34 states have internal predecessors, (63), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:37,782 INFO L93 Difference]: Finished difference Result 156 states and 183 transitions. [2024-09-24 23:04:37,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-24 23:04:37,782 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 34 states have internal predecessors, (63), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 72 [2024-09-24 23:04:37,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:37,784 INFO L225 Difference]: With dead ends: 156 [2024-09-24 23:04:37,784 INFO L226 Difference]: Without dead ends: 124 [2024-09-24 23:04:37,784 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 132 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2024-09-24 23:04:37,785 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:37,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 295 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-09-24 23:04:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2024-09-24 23:04:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 73 states have internal predecessors, (83), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2024-09-24 23:04:37,805 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 72 [2024-09-24 23:04:37,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:37,806 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2024-09-24 23:04:37,806 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 34 states have internal predecessors, (63), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:04:37,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2024-09-24 23:04:37,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-24 23:04:37,807 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:37,807 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:37,818 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-09-24 23:04:38,007 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:38,007 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:38,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 588767362, now seen corresponding path program 14 times [2024-09-24 23:04:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381894027] [2024-09-24 23:04:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:38,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:04:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:04:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:04:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:04:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:04:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:04:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:38,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381894027] [2024-09-24 23:04:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381894027] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048649436] [2024-09-24 23:04:38,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:38,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:38,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:38,126 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:38,129 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-24 23:04:38,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:38,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:38,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-24 23:04:38,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:38,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:04:38,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048649436] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:38,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:38,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-09-24 23:04:38,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174559840] [2024-09-24 23:04:38,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:38,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-24 23:04:38,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:38,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-24 23:04:38,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:04:38,356 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:38,453 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-09-24 23:04:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-24 23:04:38,454 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 73 [2024-09-24 23:04:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:38,454 INFO L225 Difference]: With dead ends: 105 [2024-09-24 23:04:38,454 INFO L226 Difference]: Without dead ends: 103 [2024-09-24 23:04:38,455 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 149 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-24 23:04:38,455 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:38,455 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 207 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-24 23:04:38,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2024-09-24 23:04:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 78 states have internal predecessors, (88), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:38,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2024-09-24 23:04:38,479 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 73 [2024-09-24 23:04:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:38,479 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2024-09-24 23:04:38,479 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:04:38,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2024-09-24 23:04:38,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-24 23:04:38,480 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:38,480 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:38,493 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:38,680 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-09-24 23:04:38,680 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:38,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:38,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1028833942, now seen corresponding path program 15 times [2024-09-24 23:04:38,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:38,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082793821] [2024-09-24 23:04:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:38,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:04:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:04:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:04:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:04:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:04:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:04:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:04:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082793821] [2024-09-24 23:04:38,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082793821] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676928772] [2024-09-24 23:04:38,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:04:38,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:38,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:38,924 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:38,925 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-24 23:04:38,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-24 23:04:38,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:38,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-24 23:04:38,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:39,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676928772] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:39,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:39,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-09-24 23:04:39,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114115618] [2024-09-24 23:04:39,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:39,556 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-24 23:04:39,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:39,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-24 23:04:39,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2024-09-24 23:04:39,557 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:39,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:39,753 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2024-09-24 23:04:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-24 23:04:39,754 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-24 23:04:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:39,755 INFO L225 Difference]: With dead ends: 170 [2024-09-24 23:04:39,755 INFO L226 Difference]: Without dead ends: 135 [2024-09-24 23:04:39,755 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 139 SyntacticMatches, 18 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=389, Invalid=1681, Unknown=0, NotChecked=0, Total=2070 [2024-09-24 23:04:39,756 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:39,756 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 260 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-09-24 23:04:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 100. [2024-09-24 23:04:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-24 23:04:39,788 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-24 23:04:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:39,788 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-24 23:04:39,788 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:39,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:39,789 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-24 23:04:39,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-24 23:04:39,789 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:39,789 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:39,806 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-09-24 23:04:39,989 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-24 23:04:39,990 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:39,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1054800363, now seen corresponding path program 22 times [2024-09-24 23:04:39,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:39,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822368184] [2024-09-24 23:04:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:40,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:40,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:04:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:40,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:40,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:04:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:40,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:04:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:40,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:04:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:40,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:04:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:40,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:04:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:40,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:04:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:40,212 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 94 proven. 51 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:40,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:40,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822368184] [2024-09-24 23:04:40,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822368184] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:40,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953786202] [2024-09-24 23:04:40,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:04:40,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:40,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:40,215 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:40,217 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-24 23:04:40,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:04:40,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:40,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-24 23:04:40,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:40,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:40,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953786202] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:40,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:40,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2024-09-24 23:04:40,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028566274] [2024-09-24 23:04:40,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:40,914 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-24 23:04:40,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:40,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-24 23:04:40,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2024-09-24 23:04:40,915 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:41,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:41,103 INFO L93 Difference]: Finished difference Result 177 states and 206 transitions. [2024-09-24 23:04:41,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-24 23:04:41,104 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-24 23:04:41,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:41,105 INFO L225 Difference]: With dead ends: 177 [2024-09-24 23:04:41,105 INFO L226 Difference]: Without dead ends: 142 [2024-09-24 23:04:41,105 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 18 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=361, Invalid=1619, Unknown=0, NotChecked=0, Total=1980 [2024-09-24 23:04:41,106 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:41,106 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 258 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-09-24 23:04:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 100. [2024-09-24 23:04:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-24 23:04:41,135 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-24 23:04:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:41,135 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-24 23:04:41,136 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:41,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-24 23:04:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-24 23:04:41,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:41,136 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:41,148 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:41,337 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:41,337 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:41,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:41,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1926026934, now seen corresponding path program 23 times [2024-09-24 23:04:41,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:41,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806215518] [2024-09-24 23:04:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:41,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:41,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:41,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:04:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:41,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:41,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:04:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:41,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:04:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:41,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:04:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:41,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:04:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:41,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:04:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:41,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:04:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 94 proven. 46 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:41,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806215518] [2024-09-24 23:04:41,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806215518] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:41,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350123974] [2024-09-24 23:04:41,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:04:41,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:41,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:41,553 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:41,554 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-24 23:04:41,598 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-09-24 23:04:41,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:41,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-24 23:04:41,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:41,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:42,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350123974] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:42,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:42,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 43 [2024-09-24 23:04:42,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235384855] [2024-09-24 23:04:42,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:42,169 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-24 23:04:42,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-24 23:04:42,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1477, Unknown=0, NotChecked=0, Total=1806 [2024-09-24 23:04:42,170 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:42,394 INFO L93 Difference]: Finished difference Result 182 states and 211 transitions. [2024-09-24 23:04:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-24 23:04:42,394 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-24 23:04:42,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:42,395 INFO L225 Difference]: With dead ends: 182 [2024-09-24 23:04:42,395 INFO L226 Difference]: Without dead ends: 147 [2024-09-24 23:04:42,396 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2024-09-24 23:04:42,396 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:42,396 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 347 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:42,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-24 23:04:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 100. [2024-09-24 23:04:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:42,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-24 23:04:42,425 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-24 23:04:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:42,425 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-24 23:04:42,425 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:42,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:42,425 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-24 23:04:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-24 23:04:42,426 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:42,426 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:42,438 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-09-24 23:04:42,626 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:42,626 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:42,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1745087989, now seen corresponding path program 24 times [2024-09-24 23:04:42,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:42,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507220497] [2024-09-24 23:04:42,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:42,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:42,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:42,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:04:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:42,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:42,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:04:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:42,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:04:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:42,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:04:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:42,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:04:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:42,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:04:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:42,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:04:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 94 proven. 43 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:42,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:42,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507220497] [2024-09-24 23:04:42,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507220497] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:42,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962891010] [2024-09-24 23:04:42,833 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:04:42,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:42,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:42,834 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:42,835 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-24 23:04:42,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-09-24 23:04:42,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:42,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-24 23:04:42,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:43,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:43,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962891010] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:43,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:43,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 42 [2024-09-24 23:04:43,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512396659] [2024-09-24 23:04:43,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:43,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-24 23:04:43,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-24 23:04:43,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1413, Unknown=0, NotChecked=0, Total=1722 [2024-09-24 23:04:43,417 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 42 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 42 states have internal predecessors, (73), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:43,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:43,691 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2024-09-24 23:04:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-24 23:04:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 42 states have internal predecessors, (73), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-24 23:04:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:43,695 INFO L225 Difference]: With dead ends: 185 [2024-09-24 23:04:43,695 INFO L226 Difference]: Without dead ends: 150 [2024-09-24 23:04:43,696 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 142 SyntacticMatches, 18 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=317, Invalid=1489, Unknown=0, NotChecked=0, Total=1806 [2024-09-24 23:04:43,696 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:43,696 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 310 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:04:43,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-24 23:04:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 100. [2024-09-24 23:04:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-24 23:04:43,734 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-24 23:04:43,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:43,735 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-24 23:04:43,735 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 42 states have internal predecessors, (73), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:43,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-24 23:04:43,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-24 23:04:43,736 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:43,736 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:43,753 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-09-24 23:04:43,936 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-09-24 23:04:43,936 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:43,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:43,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1308790058, now seen corresponding path program 25 times [2024-09-24 23:04:43,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:43,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607266767] [2024-09-24 23:04:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:43,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:04:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:04:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:04:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:04:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:04:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:04:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:04:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 94 proven. 42 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:44,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:44,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607266767] [2024-09-24 23:04:44,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607266767] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:44,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662437699] [2024-09-24 23:04:44,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:04:44,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:44,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:44,188 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:44,189 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-24 23:04:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:44,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-24 23:04:44,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:44,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:44,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662437699] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:44,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:44,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 41 [2024-09-24 23:04:44,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882398080] [2024-09-24 23:04:44,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:44,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-24 23:04:44,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:44,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-24 23:04:44,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1347, Unknown=0, NotChecked=0, Total=1640 [2024-09-24 23:04:44,753 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 41 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 41 states have internal predecessors, (72), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:45,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:45,005 INFO L93 Difference]: Finished difference Result 186 states and 215 transitions. [2024-09-24 23:04:45,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-24 23:04:45,006 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 41 states have internal predecessors, (72), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-24 23:04:45,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:45,007 INFO L225 Difference]: With dead ends: 186 [2024-09-24 23:04:45,007 INFO L226 Difference]: Without dead ends: 151 [2024-09-24 23:04:45,008 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 143 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=1421, Unknown=0, NotChecked=0, Total=1722 [2024-09-24 23:04:45,008 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:45,009 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 321 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:04:45,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-09-24 23:04:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 100. [2024-09-24 23:04:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-24 23:04:45,050 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-24 23:04:45,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:45,050 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-24 23:04:45,050 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 41 states have internal predecessors, (72), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:45,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:45,051 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-24 23:04:45,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-24 23:04:45,051 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:45,051 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:45,065 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-24 23:04:45,252 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-24 23:04:45,252 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:45,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:45,252 INFO L85 PathProgramCache]: Analyzing trace with hash 809455061, now seen corresponding path program 26 times [2024-09-24 23:04:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316932094] [2024-09-24 23:04:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:45,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:45,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:45,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:04:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:45,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:45,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:04:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:45,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:04:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:45,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:04:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:45,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:04:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:45,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:04:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:45,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:04:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 94 proven. 43 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:45,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316932094] [2024-09-24 23:04:45,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316932094] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398414145] [2024-09-24 23:04:45,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:45,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:45,460 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:45,460 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-24 23:04:45,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:45,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:45,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-24 23:04:45,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:45,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:46,012 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:46,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398414145] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:46,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:46,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 40 [2024-09-24 23:04:46,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116723779] [2024-09-24 23:04:46,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:46,013 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-24 23:04:46,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:46,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-24 23:04:46,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2024-09-24 23:04:46,014 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 40 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:46,258 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2024-09-24 23:04:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-24 23:04:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-24 23:04:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:46,260 INFO L225 Difference]: With dead ends: 185 [2024-09-24 23:04:46,260 INFO L226 Difference]: Without dead ends: 150 [2024-09-24 23:04:46,260 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 144 SyntacticMatches, 18 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=1351, Unknown=0, NotChecked=0, Total=1640 [2024-09-24 23:04:46,261 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:46,261 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 229 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-24 23:04:46,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 100. [2024-09-24 23:04:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-24 23:04:46,288 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-24 23:04:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:46,288 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-24 23:04:46,288 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:46,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-24 23:04:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-24 23:04:46,288 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:46,289 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:46,300 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:46,489 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-24 23:04:46,489 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:46,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2031708426, now seen corresponding path program 27 times [2024-09-24 23:04:46,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:46,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930645467] [2024-09-24 23:04:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:46,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:46,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:46,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:04:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:46,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:46,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:04:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:46,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:04:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:46,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:04:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:46,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:04:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:46,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:04:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:46,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:04:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 94 proven. 46 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:46,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930645467] [2024-09-24 23:04:46,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930645467] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521623075] [2024-09-24 23:04:46,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:04:46,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:46,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:46,700 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:46,701 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-24 23:04:46,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-24 23:04:46,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:46,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-24 23:04:46,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:47,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:47,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521623075] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:47,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:47,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 39 [2024-09-24 23:04:47,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124695209] [2024-09-24 23:04:47,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:47,303 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-24 23:04:47,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-24 23:04:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1209, Unknown=0, NotChecked=0, Total=1482 [2024-09-24 23:04:47,304 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 39 states have internal predecessors, (70), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:47,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:47,512 INFO L93 Difference]: Finished difference Result 182 states and 211 transitions. [2024-09-24 23:04:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-24 23:04:47,512 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 39 states have internal predecessors, (70), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-24 23:04:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:47,513 INFO L225 Difference]: With dead ends: 182 [2024-09-24 23:04:47,513 INFO L226 Difference]: Without dead ends: 147 [2024-09-24 23:04:47,514 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 145 SyntacticMatches, 18 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2024-09-24 23:04:47,514 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:47,514 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 264 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-24 23:04:47,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 100. [2024-09-24 23:04:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-24 23:04:47,552 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-24 23:04:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:47,553 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-24 23:04:47,553 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 39 states have internal predecessors, (70), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:47,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:47,553 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-24 23:04:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-24 23:04:47,554 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:47,554 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:47,569 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:47,754 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-09-24 23:04:47,754 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:47,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:47,755 INFO L85 PathProgramCache]: Analyzing trace with hash 93398453, now seen corresponding path program 28 times [2024-09-24 23:04:47,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:47,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964824312] [2024-09-24 23:04:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:47,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:47,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:47,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:04:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:47,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:47,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:04:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:47,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:04:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:47,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:04:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:47,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:04:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:47,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:04:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:47,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:04:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 94 proven. 51 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:47,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:47,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964824312] [2024-09-24 23:04:47,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964824312] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:47,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949097635] [2024-09-24 23:04:47,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:04:47,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:47,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:47,961 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:47,962 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-24 23:04:48,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:04:48,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:48,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-24 23:04:48,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:48,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:48,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949097635] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:48,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:48,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 38 [2024-09-24 23:04:48,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463165625] [2024-09-24 23:04:48,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:48,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-24 23:04:48,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:48,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-24 23:04:48,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1137, Unknown=0, NotChecked=0, Total=1406 [2024-09-24 23:04:48,490 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:48,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:48,715 INFO L93 Difference]: Finished difference Result 177 states and 206 transitions. [2024-09-24 23:04:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-24 23:04:48,715 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-24 23:04:48,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:48,716 INFO L225 Difference]: With dead ends: 177 [2024-09-24 23:04:48,716 INFO L226 Difference]: Without dead ends: 142 [2024-09-24 23:04:48,717 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 146 SyntacticMatches, 18 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2024-09-24 23:04:48,717 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:48,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 286 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:48,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-09-24 23:04:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 100. [2024-09-24 23:04:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 states have internal predecessors, (89), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:48,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-09-24 23:04:48,756 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2024-09-24 23:04:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:48,756 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-09-24 23:04:48,756 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:48,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-09-24 23:04:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-24 23:04:48,757 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:48,757 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:48,774 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:48,961 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:48,962 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:48,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:48,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1777712362, now seen corresponding path program 8 times [2024-09-24 23:04:48,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:48,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57025288] [2024-09-24 23:04:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:48,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:49,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:49,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:04:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:49,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:49,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:04:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:49,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:04:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:49,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:04:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:49,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:04:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:49,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:04:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:49,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:04:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:49,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57025288] [2024-09-24 23:04:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57025288] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587809234] [2024-09-24 23:04:49,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:49,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:49,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:49,179 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:49,180 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-24 23:04:49,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:49,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:49,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-24 23:04:49,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:49,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:49,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587809234] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:49,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:49,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 37 [2024-09-24 23:04:49,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707054567] [2024-09-24 23:04:49,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:49,736 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-24 23:04:49,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-24 23:04:49,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1063, Unknown=0, NotChecked=0, Total=1332 [2024-09-24 23:04:49,737 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 37 states, 37 states have (on average 1.837837837837838) internal successors, (68), 37 states have internal predecessors, (68), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:49,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:49,922 INFO L93 Difference]: Finished difference Result 173 states and 203 transitions. [2024-09-24 23:04:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-24 23:04:49,923 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.837837837837838) internal successors, (68), 37 states have internal predecessors, (68), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 80 [2024-09-24 23:04:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:49,924 INFO L225 Difference]: With dead ends: 173 [2024-09-24 23:04:49,924 INFO L226 Difference]: Without dead ends: 138 [2024-09-24 23:04:49,924 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 147 SyntacticMatches, 18 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=1129, Unknown=0, NotChecked=0, Total=1406 [2024-09-24 23:04:49,924 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:49,924 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 257 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:49,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-09-24 23:04:49,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 102. [2024-09-24 23:04:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.15) internal successors, (92), 81 states have internal predecessors, (92), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:04:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2024-09-24 23:04:49,964 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 80 [2024-09-24 23:04:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:49,964 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2024-09-24 23:04:49,965 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.837837837837838) internal successors, (68), 37 states have internal predecessors, (68), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:04:49,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2024-09-24 23:04:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-24 23:04:49,965 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:49,966 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:49,980 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-24 23:04:50,166 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:50,166 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:50,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:50,167 INFO L85 PathProgramCache]: Analyzing trace with hash 805249281, now seen corresponding path program 16 times [2024-09-24 23:04:50,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:50,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400715094] [2024-09-24 23:04:50,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:50,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:50,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:50,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:50,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:04:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:50,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:04:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:50,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:04:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:50,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:04:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:50,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:04:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:50,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:04:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:50,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:04:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:50,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:50,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400715094] [2024-09-24 23:04:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400715094] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:50,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879040229] [2024-09-24 23:04:50,312 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:04:50,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:50,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:50,315 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:50,316 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-24 23:04:50,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:04:50,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:50,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:04:50,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:50,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-24 23:04:50,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879040229] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:50,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:50,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-24 23:04:50,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054014182] [2024-09-24 23:04:50,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:50,593 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-24 23:04:50,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:50,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-24 23:04:50,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-09-24 23:04:50,593 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:50,706 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2024-09-24 23:04:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:04:50,707 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 81 [2024-09-24 23:04:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:50,708 INFO L225 Difference]: With dead ends: 115 [2024-09-24 23:04:50,708 INFO L226 Difference]: Without dead ends: 113 [2024-09-24 23:04:50,708 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 168 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-09-24 23:04:50,708 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:50,708 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 249 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-24 23:04:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2024-09-24 23:04:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 86 states have internal predecessors, (97), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:04:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2024-09-24 23:04:50,740 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 81 [2024-09-24 23:04:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:50,740 INFO L474 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2024-09-24 23:04:50,741 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:04:50,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2024-09-24 23:04:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-24 23:04:50,741 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:50,741 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:50,753 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:50,941 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:50,942 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:50,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:50,942 INFO L85 PathProgramCache]: Analyzing trace with hash 41469239, now seen corresponding path program 17 times [2024-09-24 23:04:50,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:50,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298900807] [2024-09-24 23:04:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:50,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:04:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:04:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:04:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:04:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:04:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:04:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:04:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:04:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:51,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298900807] [2024-09-24 23:04:51,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298900807] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270197343] [2024-09-24 23:04:51,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:04:51,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:51,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:51,188 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:51,190 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-24 23:04:51,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-24 23:04:51,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:51,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:04:51,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:51,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270197343] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:51,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:51,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-09-24 23:04:51,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948802481] [2024-09-24 23:04:51,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:51,905 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-24 23:04:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-24 23:04:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=1901, Unknown=0, NotChecked=0, Total=2352 [2024-09-24 23:04:51,906 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 49 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 49 states have internal predecessors, (82), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:52,105 INFO L93 Difference]: Finished difference Result 187 states and 219 transitions. [2024-09-24 23:04:52,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:04:52,105 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 49 states have internal predecessors, (82), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-24 23:04:52,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:52,106 INFO L225 Difference]: With dead ends: 187 [2024-09-24 23:04:52,106 INFO L226 Difference]: Without dead ends: 149 [2024-09-24 23:04:52,107 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 153 SyntacticMatches, 20 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1793 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=459, Invalid=1991, Unknown=0, NotChecked=0, Total=2450 [2024-09-24 23:04:52,107 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:52,107 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 235 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:52,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-24 23:04:52,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 110. [2024-09-24 23:04:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:04:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-24 23:04:52,140 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-24 23:04:52,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:52,140 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-24 23:04:52,140 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 49 states have internal predecessors, (82), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:52,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-24 23:04:52,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-24 23:04:52,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:52,141 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:52,152 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-09-24 23:04:52,341 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:52,341 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:52,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1330059702, now seen corresponding path program 29 times [2024-09-24 23:04:52,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:52,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238291890] [2024-09-24 23:04:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:52,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:04:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:04:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:04:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:04:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:04:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:04:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:04:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:04:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 119 proven. 62 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:52,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:52,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238291890] [2024-09-24 23:04:52,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238291890] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12448966] [2024-09-24 23:04:52,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:04:52,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:52,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:52,589 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:52,589 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-24 23:04:52,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-24 23:04:52,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:52,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:04:52,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 144 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:53,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 144 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:53,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12448966] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:53,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:53,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2024-09-24 23:04:53,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395842837] [2024-09-24 23:04:53,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:53,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-24 23:04:53,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:53,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-24 23:04:53,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1836, Unknown=0, NotChecked=0, Total=2256 [2024-09-24 23:04:53,285 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 48 states, 48 states have (on average 1.6875) internal successors, (81), 48 states have internal predecessors, (81), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:53,510 INFO L93 Difference]: Finished difference Result 195 states and 227 transitions. [2024-09-24 23:04:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:04:53,510 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.6875) internal successors, (81), 48 states have internal predecessors, (81), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-24 23:04:53,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:53,511 INFO L225 Difference]: With dead ends: 195 [2024-09-24 23:04:53,511 INFO L226 Difference]: Without dead ends: 157 [2024-09-24 23:04:53,512 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 154 SyntacticMatches, 20 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=428, Invalid=1924, Unknown=0, NotChecked=0, Total=2352 [2024-09-24 23:04:53,512 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:53,512 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 273 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:53,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-09-24 23:04:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2024-09-24 23:04:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:04:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-24 23:04:53,552 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-24 23:04:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:53,552 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-24 23:04:53,553 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.6875) internal successors, (81), 48 states have internal predecessors, (81), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:53,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-24 23:04:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-24 23:04:53,553 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:53,553 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:53,566 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-09-24 23:04:53,754 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:53,754 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:53,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash -13846185, now seen corresponding path program 30 times [2024-09-24 23:04:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39613737] [2024-09-24 23:04:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:53,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:04:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:04:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:04:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:04:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:04:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:04:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:04:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:04:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 119 proven. 56 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:53,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:53,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39613737] [2024-09-24 23:04:53,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39613737] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:53,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646943618] [2024-09-24 23:04:53,999 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:04:53,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:54,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:54,001 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:54,001 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-24 23:04:54,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-24 23:04:54,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:54,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:04:54,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 144 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:54,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 144 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:54,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646943618] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:54,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:54,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 47 [2024-09-24 23:04:54,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994973260] [2024-09-24 23:04:54,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:54,682 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-24 23:04:54,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:54,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-24 23:04:54,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1769, Unknown=0, NotChecked=0, Total=2162 [2024-09-24 23:04:54,683 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 47 states, 47 states have (on average 1.702127659574468) internal successors, (80), 47 states have internal predecessors, (80), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:54,942 INFO L93 Difference]: Finished difference Result 201 states and 233 transitions. [2024-09-24 23:04:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:04:54,942 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.702127659574468) internal successors, (80), 47 states have internal predecessors, (80), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-24 23:04:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:54,943 INFO L225 Difference]: With dead ends: 201 [2024-09-24 23:04:54,943 INFO L226 Difference]: Without dead ends: 163 [2024-09-24 23:04:54,944 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 155 SyntacticMatches, 20 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=401, Invalid=1855, Unknown=0, NotChecked=0, Total=2256 [2024-09-24 23:04:54,944 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:54,944 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 360 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-24 23:04:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 110. [2024-09-24 23:04:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:04:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-24 23:04:54,980 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-24 23:04:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:54,980 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-24 23:04:54,980 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.702127659574468) internal successors, (80), 47 states have internal predecessors, (80), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:54,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-24 23:04:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-24 23:04:54,981 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:54,981 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:54,992 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-09-24 23:04:55,181 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-09-24 23:04:55,181 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:55,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1882464662, now seen corresponding path program 31 times [2024-09-24 23:04:55,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:55,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218423859] [2024-09-24 23:04:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:55,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:04:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:04:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:04:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:04:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:04:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:04:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:04:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:04:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 119 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:55,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:55,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218423859] [2024-09-24 23:04:55,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218423859] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:55,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733456031] [2024-09-24 23:04:55,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:04:55,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:55,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:55,479 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:55,480 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-24 23:04:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:55,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:04:55,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:55,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:56,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733456031] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:56,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:56,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 46 [2024-09-24 23:04:56,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254329325] [2024-09-24 23:04:56,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:56,172 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-24 23:04:56,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:56,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-24 23:04:56,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2024-09-24 23:04:56,173 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 46 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:56,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:56,444 INFO L93 Difference]: Finished difference Result 205 states and 237 transitions. [2024-09-24 23:04:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:04:56,444 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-24 23:04:56,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:56,445 INFO L225 Difference]: With dead ends: 205 [2024-09-24 23:04:56,445 INFO L226 Difference]: Without dead ends: 167 [2024-09-24 23:04:56,446 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 156 SyntacticMatches, 20 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=378, Invalid=1784, Unknown=0, NotChecked=0, Total=2162 [2024-09-24 23:04:56,446 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:56,446 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 351 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:56,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-09-24 23:04:56,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 110. [2024-09-24 23:04:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:04:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-24 23:04:56,486 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-24 23:04:56,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:56,486 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-24 23:04:56,486 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:56,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:56,487 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-24 23:04:56,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-24 23:04:56,487 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:56,487 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:56,499 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-24 23:04:56,687 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-24 23:04:56,688 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:56,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:56,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1250899319, now seen corresponding path program 32 times [2024-09-24 23:04:56,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:56,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449907871] [2024-09-24 23:04:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:56,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:04:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:04:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:04:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:04:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:04:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:04:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:04:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:04:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 119 proven. 50 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:56,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449907871] [2024-09-24 23:04:56,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449907871] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491985153] [2024-09-24 23:04:56,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:56,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:56,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:56,998 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:57,000 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-24 23:04:57,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:57,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:57,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:04:57,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:57,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491985153] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:57,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:57,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 45 [2024-09-24 23:04:57,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043143476] [2024-09-24 23:04:57,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:57,713 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-24 23:04:57,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:57,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-24 23:04:57,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1629, Unknown=0, NotChecked=0, Total=1980 [2024-09-24 23:04:57,714 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 45 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 45 states have internal predecessors, (78), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:57,993 INFO L93 Difference]: Finished difference Result 207 states and 239 transitions. [2024-09-24 23:04:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:04:57,994 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 45 states have internal predecessors, (78), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-24 23:04:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:57,995 INFO L225 Difference]: With dead ends: 207 [2024-09-24 23:04:57,995 INFO L226 Difference]: Without dead ends: 169 [2024-09-24 23:04:57,995 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 157 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=359, Invalid=1711, Unknown=0, NotChecked=0, Total=2070 [2024-09-24 23:04:57,995 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:57,995 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 240 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-09-24 23:04:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 110. [2024-09-24 23:04:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:04:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-24 23:04:58,037 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-24 23:04:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:58,037 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-24 23:04:58,038 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 45 states have internal predecessors, (78), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:58,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-24 23:04:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-24 23:04:58,038 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:58,038 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:58,050 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-09-24 23:04:58,238 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-24 23:04:58,239 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:58,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash -293494410, now seen corresponding path program 33 times [2024-09-24 23:04:58,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:58,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131929640] [2024-09-24 23:04:58,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:58,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:04:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:04:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:04:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:04:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:04:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:04:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:04:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:04:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 119 proven. 50 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:58,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:58,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131929640] [2024-09-24 23:04:58,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131929640] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:58,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421308734] [2024-09-24 23:04:58,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:04:58,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:58,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:58,475 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:58,475 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-24 23:04:58,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-24 23:04:58,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:58,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:04:58,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:58,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:59,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421308734] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:59,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:59,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 44 [2024-09-24 23:04:59,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522769540] [2024-09-24 23:04:59,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:59,136 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-24 23:04:59,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:59,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-24 23:04:59,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1556, Unknown=0, NotChecked=0, Total=1892 [2024-09-24 23:04:59,136 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 44 states, 44 states have (on average 1.75) internal successors, (77), 44 states have internal predecessors, (77), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:59,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:59,398 INFO L93 Difference]: Finished difference Result 207 states and 239 transitions. [2024-09-24 23:04:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:04:59,398 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.75) internal successors, (77), 44 states have internal predecessors, (77), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-24 23:04:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:59,400 INFO L225 Difference]: With dead ends: 207 [2024-09-24 23:04:59,400 INFO L226 Difference]: Without dead ends: 169 [2024-09-24 23:04:59,400 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 158 SyntacticMatches, 20 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=344, Invalid=1636, Unknown=0, NotChecked=0, Total=1980 [2024-09-24 23:04:59,400 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:59,400 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 263 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:04:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-09-24 23:04:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 110. [2024-09-24 23:04:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:04:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-24 23:04:59,454 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-24 23:04:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:59,454 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-24 23:04:59,455 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.75) internal successors, (77), 44 states have internal predecessors, (77), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:04:59,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-24 23:04:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-24 23:04:59,455 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:59,455 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:59,472 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-09-24 23:04:59,656 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-24 23:04:59,656 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:59,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:59,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1319254423, now seen corresponding path program 34 times [2024-09-24 23:04:59,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:59,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968272434] [2024-09-24 23:04:59,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:59,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:04:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:04:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:04:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:04:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:04:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:04:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:04:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:04:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:04:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 119 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:04:59,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:59,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968272434] [2024-09-24 23:04:59,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968272434] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:59,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618429171] [2024-09-24 23:04:59,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:04:59,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:59,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:59,896 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:59,897 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-24 23:04:59,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:04:59,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:59,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:04:59,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:00,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:00,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618429171] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:00,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:00,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2024-09-24 23:05:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508070141] [2024-09-24 23:05:00,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:00,512 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-24 23:05:00,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:00,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-24 23:05:00,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2024-09-24 23:05:00,512 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 43 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:05:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:00,770 INFO L93 Difference]: Finished difference Result 205 states and 237 transitions. [2024-09-24 23:05:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:05:00,771 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-24 23:05:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:00,772 INFO L225 Difference]: With dead ends: 205 [2024-09-24 23:05:00,772 INFO L226 Difference]: Without dead ends: 167 [2024-09-24 23:05:00,772 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 159 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=333, Invalid=1559, Unknown=0, NotChecked=0, Total=1892 [2024-09-24 23:05:00,773 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:00,773 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 271 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-09-24 23:05:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 110. [2024-09-24 23:05:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:05:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-24 23:05:00,812 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-24 23:05:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:00,812 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-24 23:05:00,813 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:05:00,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-24 23:05:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-24 23:05:00,813 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:00,813 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:00,825 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-09-24 23:05:01,014 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-09-24 23:05:01,014 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:01,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash 401447254, now seen corresponding path program 35 times [2024-09-24 23:05:01,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:01,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545744575] [2024-09-24 23:05:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:01,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:05:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:05:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:05:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:05:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:05:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:05:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:05:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:05:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:05:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 119 proven. 56 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:01,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:01,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545744575] [2024-09-24 23:05:01,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545744575] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:01,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370020470] [2024-09-24 23:05:01,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:05:01,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:01,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:01,255 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:01,256 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-24 23:05:01,301 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-24 23:05:01,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:01,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:05:01,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 144 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:01,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 144 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:01,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370020470] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:01,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:01,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 42 [2024-09-24 23:05:01,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787454854] [2024-09-24 23:05:01,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:01,858 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-24 23:05:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-24 23:05:01,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1404, Unknown=0, NotChecked=0, Total=1722 [2024-09-24 23:05:01,859 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 42 states have internal predecessors, (75), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:05:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:02,129 INFO L93 Difference]: Finished difference Result 201 states and 233 transitions. [2024-09-24 23:05:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:05:02,129 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 42 states have internal predecessors, (75), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-24 23:05:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:02,130 INFO L225 Difference]: With dead ends: 201 [2024-09-24 23:05:02,131 INFO L226 Difference]: Without dead ends: 163 [2024-09-24 23:05:02,131 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 160 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2024-09-24 23:05:02,131 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:02,131 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 321 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-24 23:05:02,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 110. [2024-09-24 23:05:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:05:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-24 23:05:02,188 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-24 23:05:02,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:02,188 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-24 23:05:02,189 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 42 states have internal predecessors, (75), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:05:02,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:02,189 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-24 23:05:02,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-24 23:05:02,189 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:02,190 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:02,206 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-09-24 23:05:02,390 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:02,390 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:02,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:02,391 INFO L85 PathProgramCache]: Analyzing trace with hash 233293239, now seen corresponding path program 36 times [2024-09-24 23:05:02,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:02,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456093037] [2024-09-24 23:05:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:02,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:05:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:05:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:05:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:05:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:05:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:05:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:05:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:05:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:05:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 119 proven. 62 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:02,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:02,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456093037] [2024-09-24 23:05:02,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456093037] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:02,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100060612] [2024-09-24 23:05:02,633 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:05:02,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:02,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:02,636 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:02,637 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-24 23:05:02,683 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-24 23:05:02,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:02,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:05:02,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 144 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:03,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 144 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:03,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100060612] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:03,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:03,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 41 [2024-09-24 23:05:03,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619880718] [2024-09-24 23:05:03,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:03,238 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-24 23:05:03,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:03,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-24 23:05:03,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1325, Unknown=0, NotChecked=0, Total=1640 [2024-09-24 23:05:03,239 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:05:03,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:03,516 INFO L93 Difference]: Finished difference Result 195 states and 227 transitions. [2024-09-24 23:05:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:05:03,516 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-24 23:05:03,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:03,518 INFO L225 Difference]: With dead ends: 195 [2024-09-24 23:05:03,518 INFO L226 Difference]: Without dead ends: 157 [2024-09-24 23:05:03,518 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 161 SyntacticMatches, 20 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2024-09-24 23:05:03,519 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:03,519 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 226 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:03,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-09-24 23:05:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2024-09-24 23:05:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 87 states have internal predecessors, (98), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:05:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-09-24 23:05:03,575 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2024-09-24 23:05:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:03,576 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-09-24 23:05:03,576 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:05:03,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-09-24 23:05:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-24 23:05:03,577 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:03,577 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:03,593 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:03,777 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:03,778 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:03,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1850341066, now seen corresponding path program 9 times [2024-09-24 23:05:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:03,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741888328] [2024-09-24 23:05:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:03,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:05:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:05:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:05:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-24 23:05:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-24 23:05:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:05:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:05:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:05:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:05:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:04,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:04,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741888328] [2024-09-24 23:05:04,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741888328] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:04,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022001563] [2024-09-24 23:05:04,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:05:04,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:04,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:04,021 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:04,023 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-24 23:05:04,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-24 23:05:04,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:04,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-24 23:05:04,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:04,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:04,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022001563] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:04,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:04,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 40 [2024-09-24 23:05:04,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660072745] [2024-09-24 23:05:04,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:04,646 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-24 23:05:04,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:04,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-24 23:05:04,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2024-09-24 23:05:04,647 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 40 states, 40 states have (on average 1.825) internal successors, (73), 40 states have internal predecessors, (73), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:05:04,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:04,845 INFO L93 Difference]: Finished difference Result 190 states and 223 transitions. [2024-09-24 23:05:04,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:05:04,845 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.825) internal successors, (73), 40 states have internal predecessors, (73), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 88 [2024-09-24 23:05:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:04,846 INFO L225 Difference]: With dead ends: 190 [2024-09-24 23:05:04,846 INFO L226 Difference]: Without dead ends: 152 [2024-09-24 23:05:04,847 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 162 SyntacticMatches, 20 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1316, Unknown=0, NotChecked=0, Total=1640 [2024-09-24 23:05:04,847 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:04,847 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 159 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-24 23:05:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 112. [2024-09-24 23:05:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 89 states have internal predecessors, (101), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:05:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2024-09-24 23:05:04,891 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 88 [2024-09-24 23:05:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:04,892 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2024-09-24 23:05:04,892 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.825) internal successors, (73), 40 states have internal predecessors, (73), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:05:04,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2024-09-24 23:05:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-09-24 23:05:04,892 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:04,892 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:04,904 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:05,093 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-09-24 23:05:05,093 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1568569182, now seen corresponding path program 18 times [2024-09-24 23:05:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164164541] [2024-09-24 23:05:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:05,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:05,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164164541] [2024-09-24 23:05:05,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164164541] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:05,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543174026] [2024-09-24 23:05:05,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:05:05,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:05,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:05,238 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:05,240 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-24 23:05:05,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-24 23:05:05,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:05,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:05,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:05,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-24 23:05:05,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543174026] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:05,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:05,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-09-24 23:05:05,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693763021] [2024-09-24 23:05:05,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:05,488 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-24 23:05:05,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:05,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-24 23:05:05,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-09-24 23:05:05,489 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:05:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:05,620 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2024-09-24 23:05:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-24 23:05:05,620 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 89 [2024-09-24 23:05:05,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:05,621 INFO L225 Difference]: With dead ends: 125 [2024-09-24 23:05:05,621 INFO L226 Difference]: Without dead ends: 123 [2024-09-24 23:05:05,621 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 185 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-09-24 23:05:05,622 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:05,622 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 269 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:05,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-24 23:05:05,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-09-24 23:05:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 94 states have internal predecessors, (106), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2024-09-24 23:05:05,683 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 89 [2024-09-24 23:05:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:05,683 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2024-09-24 23:05:05,684 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:05:05,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2024-09-24 23:05:05,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:05,685 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:05,685 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:05,701 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:05,885 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:05,886 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:05,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash 123844214, now seen corresponding path program 19 times [2024-09-24 23:05:05,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:05,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655651631] [2024-09-24 23:05:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:05,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 147 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:06,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:06,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655651631] [2024-09-24 23:05:06,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655651631] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:06,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375783242] [2024-09-24 23:05:06,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:05:06,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:06,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:06,173 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:06,176 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-24 23:05:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:06,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:06,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:06,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375783242] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:06,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:06,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2024-09-24 23:05:06,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624448620] [2024-09-24 23:05:06,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:06,988 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-24 23:05:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:06,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-24 23:05:06,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=2229, Unknown=0, NotChecked=0, Total=2756 [2024-09-24 23:05:06,989 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 53 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:07,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:07,295 INFO L93 Difference]: Finished difference Result 204 states and 239 transitions. [2024-09-24 23:05:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:07,295 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:07,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:07,296 INFO L225 Difference]: With dead ends: 204 [2024-09-24 23:05:07,296 INFO L226 Difference]: Without dead ends: 163 [2024-09-24 23:05:07,296 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 167 SyntacticMatches, 22 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=535, Invalid=2327, Unknown=0, NotChecked=0, Total=2862 [2024-09-24 23:05:07,297 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:07,297 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 296 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:07,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-24 23:05:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 120. [2024-09-24 23:05:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-24 23:05:07,350 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-24 23:05:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:07,350 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-24 23:05:07,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:07,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-24 23:05:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:07,351 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:07,351 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:07,368 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:07,551 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:07,551 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:07,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1467016203, now seen corresponding path program 37 times [2024-09-24 23:05:07,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:07,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765964178] [2024-09-24 23:05:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:07,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 147 proven. 74 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:07,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:07,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765964178] [2024-09-24 23:05:07,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765964178] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:07,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274351650] [2024-09-24 23:05:07,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:05:07,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:07,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:07,856 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:07,857 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-24 23:05:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:07,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:07,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 175 proven. 46 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:08,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 175 proven. 46 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274351650] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:08,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:08,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 52 [2024-09-24 23:05:08,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519307896] [2024-09-24 23:05:08,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:08,748 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-24 23:05:08,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-24 23:05:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=2159, Unknown=0, NotChecked=0, Total=2652 [2024-09-24 23:05:08,749 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 52 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 52 states have internal predecessors, (87), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:09,048 INFO L93 Difference]: Finished difference Result 213 states and 248 transitions. [2024-09-24 23:05:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:09,049 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 52 states have internal predecessors, (87), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:09,050 INFO L225 Difference]: With dead ends: 213 [2024-09-24 23:05:09,050 INFO L226 Difference]: Without dead ends: 172 [2024-09-24 23:05:09,051 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 168 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2061 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=501, Invalid=2255, Unknown=0, NotChecked=0, Total=2756 [2024-09-24 23:05:09,051 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:09,051 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 326 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:09,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-24 23:05:09,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 120. [2024-09-24 23:05:09,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:09,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-24 23:05:09,126 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-24 23:05:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:09,126 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-24 23:05:09,126 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 52 states have internal predecessors, (87), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:09,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:09,126 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-24 23:05:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:09,127 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:09,127 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:09,138 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-09-24 23:05:09,327 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-09-24 23:05:09,327 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:09,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:09,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1668254358, now seen corresponding path program 38 times [2024-09-24 23:05:09,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:09,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747593752] [2024-09-24 23:05:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:09,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 147 proven. 67 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:09,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:09,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747593752] [2024-09-24 23:05:09,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747593752] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:09,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013279997] [2024-09-24 23:05:09,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:05:09,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:09,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:09,631 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:09,632 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-24 23:05:09,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:05:09,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:09,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:09,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 175 proven. 39 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:10,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 175 proven. 39 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:10,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013279997] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:10,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:10,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 51 [2024-09-24 23:05:10,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988121361] [2024-09-24 23:05:10,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:10,394 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-24 23:05:10,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:10,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-24 23:05:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=2087, Unknown=0, NotChecked=0, Total=2550 [2024-09-24 23:05:10,395 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 51 states, 51 states have (on average 1.6862745098039216) internal successors, (86), 51 states have internal predecessors, (86), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:10,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:10,733 INFO L93 Difference]: Finished difference Result 220 states and 255 transitions. [2024-09-24 23:05:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:10,734 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.6862745098039216) internal successors, (86), 51 states have internal predecessors, (86), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:10,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:10,735 INFO L225 Difference]: With dead ends: 220 [2024-09-24 23:05:10,735 INFO L226 Difference]: Without dead ends: 179 [2024-09-24 23:05:10,735 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 169 SyntacticMatches, 22 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=471, Invalid=2181, Unknown=0, NotChecked=0, Total=2652 [2024-09-24 23:05:10,736 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:10,736 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 269 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-24 23:05:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 120. [2024-09-24 23:05:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-24 23:05:10,785 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-24 23:05:10,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:10,785 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-24 23:05:10,785 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.6862745098039216) internal successors, (86), 51 states have internal predecessors, (86), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:10,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:10,786 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-24 23:05:10,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:10,786 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:10,786 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:10,797 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:10,986 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-24 23:05:10,987 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:10,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:10,987 INFO L85 PathProgramCache]: Analyzing trace with hash 661013461, now seen corresponding path program 39 times [2024-09-24 23:05:10,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:10,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328704641] [2024-09-24 23:05:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:10,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 147 proven. 62 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:11,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:11,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328704641] [2024-09-24 23:05:11,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328704641] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539451946] [2024-09-24 23:05:11,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:05:11,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:11,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:11,266 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:11,267 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-24 23:05:11,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-24 23:05:11,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:11,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:11,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 175 proven. 34 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:11,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 175 proven. 34 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:12,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539451946] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:12,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:12,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 50 [2024-09-24 23:05:12,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30709675] [2024-09-24 23:05:12,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:12,024 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-24 23:05:12,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:12,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-24 23:05:12,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2013, Unknown=0, NotChecked=0, Total=2450 [2024-09-24 23:05:12,025 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 50 states, 50 states have (on average 1.7) internal successors, (85), 50 states have internal predecessors, (85), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:12,360 INFO L93 Difference]: Finished difference Result 225 states and 260 transitions. [2024-09-24 23:05:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:12,361 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.7) internal successors, (85), 50 states have internal predecessors, (85), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:12,362 INFO L225 Difference]: With dead ends: 225 [2024-09-24 23:05:12,362 INFO L226 Difference]: Without dead ends: 184 [2024-09-24 23:05:12,362 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 170 SyntacticMatches, 22 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1820 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=445, Invalid=2105, Unknown=0, NotChecked=0, Total=2550 [2024-09-24 23:05:12,363 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:12,363 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 303 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-24 23:05:12,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 120. [2024-09-24 23:05:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-24 23:05:12,444 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-24 23:05:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:12,444 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-24 23:05:12,445 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.7) internal successors, (85), 50 states have internal predecessors, (85), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:12,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-24 23:05:12,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:12,446 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:12,446 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:12,460 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-09-24 23:05:12,646 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-24 23:05:12,646 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:12,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:12,647 INFO L85 PathProgramCache]: Analyzing trace with hash -618404170, now seen corresponding path program 40 times [2024-09-24 23:05:12,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:12,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786293809] [2024-09-24 23:05:12,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:12,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 147 proven. 59 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:12,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:12,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786293809] [2024-09-24 23:05:12,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786293809] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:12,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333099200] [2024-09-24 23:05:12,918 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:05:12,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:12,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:12,920 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:12,922 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-24 23:05:12,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:05:12,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:12,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:12,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 175 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:13,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 175 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:13,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333099200] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:13,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:13,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 49 [2024-09-24 23:05:13,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088935174] [2024-09-24 23:05:13,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:13,650 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-24 23:05:13,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-24 23:05:13,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1937, Unknown=0, NotChecked=0, Total=2352 [2024-09-24 23:05:13,651 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 49 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 49 states have internal predecessors, (84), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:14,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:14,060 INFO L93 Difference]: Finished difference Result 228 states and 263 transitions. [2024-09-24 23:05:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:14,061 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 49 states have internal predecessors, (84), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:14,062 INFO L225 Difference]: With dead ends: 228 [2024-09-24 23:05:14,062 INFO L226 Difference]: Without dead ends: 187 [2024-09-24 23:05:14,062 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 171 SyntacticMatches, 22 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2024-09-24 23:05:14,062 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:14,062 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 436 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-24 23:05:14,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 120. [2024-09-24 23:05:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-24 23:05:14,138 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-24 23:05:14,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:14,138 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-24 23:05:14,138 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 49 states have internal predecessors, (84), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:14,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-24 23:05:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:14,139 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:14,139 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:14,156 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-09-24 23:05:14,340 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-24 23:05:14,340 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:14,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:14,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1213865035, now seen corresponding path program 41 times [2024-09-24 23:05:14,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:14,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244454171] [2024-09-24 23:05:14,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 147 proven. 58 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:14,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:14,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244454171] [2024-09-24 23:05:14,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244454171] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:14,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148020288] [2024-09-24 23:05:14,612 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:05:14,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:14,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:14,613 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:14,614 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-24 23:05:14,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-09-24 23:05:14,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:14,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:14,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 175 proven. 30 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:15,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 175 proven. 30 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:15,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148020288] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:15,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:15,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 48 [2024-09-24 23:05:15,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362655730] [2024-09-24 23:05:15,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:15,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-24 23:05:15,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-24 23:05:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1859, Unknown=0, NotChecked=0, Total=2256 [2024-09-24 23:05:15,333 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 48 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 48 states have internal predecessors, (83), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:15,739 INFO L93 Difference]: Finished difference Result 229 states and 264 transitions. [2024-09-24 23:05:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:15,739 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 48 states have internal predecessors, (83), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:15,740 INFO L225 Difference]: With dead ends: 229 [2024-09-24 23:05:15,740 INFO L226 Difference]: Without dead ends: 188 [2024-09-24 23:05:15,741 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 172 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=405, Invalid=1947, Unknown=0, NotChecked=0, Total=2352 [2024-09-24 23:05:15,741 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:15,741 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 456 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-09-24 23:05:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 120. [2024-09-24 23:05:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-24 23:05:15,806 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-24 23:05:15,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:15,806 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-24 23:05:15,806 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 48 states have internal predecessors, (83), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:15,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-24 23:05:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:15,807 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:15,807 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:15,824 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-09-24 23:05:16,007 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:16,008 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:16,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1233073450, now seen corresponding path program 42 times [2024-09-24 23:05:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:16,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358246940] [2024-09-24 23:05:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 147 proven. 59 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:16,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:16,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358246940] [2024-09-24 23:05:16,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358246940] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:16,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817356708] [2024-09-24 23:05:16,311 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:05:16,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:16,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:16,313 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:16,314 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-24 23:05:16,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-09-24 23:05:16,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:16,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:16,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 175 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:16,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 175 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:17,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817356708] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:17,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:17,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 47 [2024-09-24 23:05:17,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19252409] [2024-09-24 23:05:17,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:17,025 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-24 23:05:17,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:17,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-24 23:05:17,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1779, Unknown=0, NotChecked=0, Total=2162 [2024-09-24 23:05:17,026 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 47 states, 47 states have (on average 1.7446808510638299) internal successors, (82), 47 states have internal predecessors, (82), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:17,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:17,517 INFO L93 Difference]: Finished difference Result 228 states and 263 transitions. [2024-09-24 23:05:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:17,518 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7446808510638299) internal successors, (82), 47 states have internal predecessors, (82), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:17,519 INFO L225 Difference]: With dead ends: 228 [2024-09-24 23:05:17,519 INFO L226 Difference]: Without dead ends: 187 [2024-09-24 23:05:17,520 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 173 SyntacticMatches, 22 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2024-09-24 23:05:17,520 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:17,520 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 447 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:17,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-24 23:05:17,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 120. [2024-09-24 23:05:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-24 23:05:17,597 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-24 23:05:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:17,597 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-24 23:05:17,598 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7446808510638299) internal successors, (82), 47 states have internal predecessors, (82), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:17,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-24 23:05:17,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:17,598 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:17,599 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:17,615 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:17,799 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:17,799 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:17,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash 151780245, now seen corresponding path program 43 times [2024-09-24 23:05:17,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:17,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030692621] [2024-09-24 23:05:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 147 proven. 62 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:18,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:18,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030692621] [2024-09-24 23:05:18,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030692621] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:18,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174445594] [2024-09-24 23:05:18,075 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:05:18,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:18,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:18,076 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:18,077 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-24 23:05:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:18,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:18,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 175 proven. 34 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:18,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 175 proven. 34 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:18,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174445594] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:18,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:18,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 46 [2024-09-24 23:05:18,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245883055] [2024-09-24 23:05:18,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:18,770 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-24 23:05:18,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-24 23:05:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1697, Unknown=0, NotChecked=0, Total=2070 [2024-09-24 23:05:18,771 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 46 states, 46 states have (on average 1.7608695652173914) internal successors, (81), 46 states have internal predecessors, (81), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:19,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:19,085 INFO L93 Difference]: Finished difference Result 225 states and 260 transitions. [2024-09-24 23:05:19,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:19,086 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.7608695652173914) internal successors, (81), 46 states have internal predecessors, (81), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:19,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:19,087 INFO L225 Difference]: With dead ends: 225 [2024-09-24 23:05:19,087 INFO L226 Difference]: Without dead ends: 184 [2024-09-24 23:05:19,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 174 SyntacticMatches, 22 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=381, Invalid=1781, Unknown=0, NotChecked=0, Total=2162 [2024-09-24 23:05:19,087 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:19,088 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 191 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-24 23:05:19,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 120. [2024-09-24 23:05:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-24 23:05:19,141 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-24 23:05:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:19,141 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-24 23:05:19,141 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.7608695652173914) internal successors, (81), 46 states have internal predecessors, (81), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:19,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-24 23:05:19,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:19,142 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:19,142 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:19,154 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-09-24 23:05:19,342 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:19,343 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:19,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:19,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1443378934, now seen corresponding path program 44 times [2024-09-24 23:05:19,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:19,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449127143] [2024-09-24 23:05:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 147 proven. 67 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:19,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:19,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449127143] [2024-09-24 23:05:19,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449127143] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:19,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515867564] [2024-09-24 23:05:19,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:05:19,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:19,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:19,621 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:19,622 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-24 23:05:19,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:05:19,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:19,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:19,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 175 proven. 39 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:20,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 175 proven. 39 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:20,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515867564] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:20,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:20,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 45 [2024-09-24 23:05:20,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136720584] [2024-09-24 23:05:20,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:20,294 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-24 23:05:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:20,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-24 23:05:20,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2024-09-24 23:05:20,295 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 45 states have internal predecessors, (80), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:20,659 INFO L93 Difference]: Finished difference Result 220 states and 255 transitions. [2024-09-24 23:05:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:20,659 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 45 states have internal predecessors, (80), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:20,661 INFO L225 Difference]: With dead ends: 220 [2024-09-24 23:05:20,661 INFO L226 Difference]: Without dead ends: 179 [2024-09-24 23:05:20,661 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 175 SyntacticMatches, 22 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=375, Invalid=1695, Unknown=0, NotChecked=0, Total=2070 [2024-09-24 23:05:20,661 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:20,661 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 396 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-24 23:05:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 120. [2024-09-24 23:05:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:20,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-24 23:05:20,722 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-24 23:05:20,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:20,722 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-24 23:05:20,722 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 45 states have internal predecessors, (80), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:20,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:20,722 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-24 23:05:20,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:20,723 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:20,723 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:20,735 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-09-24 23:05:20,923 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:20,923 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:20,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:20,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1562997899, now seen corresponding path program 45 times [2024-09-24 23:05:20,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:20,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868452998] [2024-09-24 23:05:20,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:20,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 147 proven. 74 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:21,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:21,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868452998] [2024-09-24 23:05:21,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868452998] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:21,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731680557] [2024-09-24 23:05:21,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:05:21,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:21,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:21,195 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:21,196 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-24 23:05:21,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-24 23:05:21,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:21,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:21,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 175 proven. 46 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:21,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 175 proven. 46 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:21,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731680557] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:21,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:21,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 44 [2024-09-24 23:05:21,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879363814] [2024-09-24 23:05:21,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:21,873 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-24 23:05:21,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-24 23:05:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2024-09-24 23:05:21,874 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 44 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:22,185 INFO L93 Difference]: Finished difference Result 213 states and 248 transitions. [2024-09-24 23:05:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:22,186 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:22,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:22,187 INFO L225 Difference]: With dead ends: 213 [2024-09-24 23:05:22,188 INFO L226 Difference]: Without dead ends: 172 [2024-09-24 23:05:22,188 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 176 SyntacticMatches, 22 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=373, Invalid=1607, Unknown=0, NotChecked=0, Total=1980 [2024-09-24 23:05:22,188 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:22,188 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 361 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-24 23:05:22,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 120. [2024-09-24 23:05:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 95 states have internal predecessors, (107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-09-24 23:05:22,244 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2024-09-24 23:05:22,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:22,244 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-09-24 23:05:22,245 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:22,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-09-24 23:05:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-24 23:05:22,245 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:22,245 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:22,257 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-09-24 23:05:22,445 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:22,446 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:22,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:22,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1388063510, now seen corresponding path program 10 times [2024-09-24 23:05:22,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:22,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95123460] [2024-09-24 23:05:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:22,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:05:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:05:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-24 23:05:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:05:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:05:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:05:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:05:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-24 23:05:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-24 23:05:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:05:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 147 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:22,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:22,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95123460] [2024-09-24 23:05:22,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95123460] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:22,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075424579] [2024-09-24 23:05:22,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:05:22,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:22,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:22,720 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:22,721 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-24 23:05:22,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:05:22,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:22,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-24 23:05:22,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:23,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:23,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075424579] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:23,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:23,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 43 [2024-09-24 23:05:23,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480570807] [2024-09-24 23:05:23,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:23,437 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-24 23:05:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:23,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-24 23:05:23,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1439, Unknown=0, NotChecked=0, Total=1806 [2024-09-24 23:05:23,438 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 43 states, 43 states have (on average 1.813953488372093) internal successors, (78), 43 states have internal predecessors, (78), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:23,735 INFO L93 Difference]: Finished difference Result 207 states and 243 transitions. [2024-09-24 23:05:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:05:23,735 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.813953488372093) internal successors, (78), 43 states have internal predecessors, (78), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 96 [2024-09-24 23:05:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:23,737 INFO L225 Difference]: With dead ends: 207 [2024-09-24 23:05:23,737 INFO L226 Difference]: Without dead ends: 166 [2024-09-24 23:05:23,737 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 177 SyntacticMatches, 22 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2024-09-24 23:05:23,737 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:23,737 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 334 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:23,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-09-24 23:05:23,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 122. [2024-09-24 23:05:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 97 states have internal predecessors, (110), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2024-09-24 23:05:23,824 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 96 [2024-09-24 23:05:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:23,824 INFO L474 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2024-09-24 23:05:23,825 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.813953488372093) internal successors, (78), 43 states have internal predecessors, (78), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-24 23:05:23,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:23,825 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2024-09-24 23:05:23,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-24 23:05:23,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:23,826 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:23,843 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:24,026 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:24,027 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:24,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:24,027 INFO L85 PathProgramCache]: Analyzing trace with hash 949083873, now seen corresponding path program 20 times [2024-09-24 23:05:24,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:24,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633205929] [2024-09-24 23:05:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:24,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:24,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:24,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633205929] [2024-09-24 23:05:24,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633205929] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:24,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614284953] [2024-09-24 23:05:24,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:05:24,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:24,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:24,186 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:24,187 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-24 23:05:24,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:05:24,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:24,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-24 23:05:24,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:24,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:05:24,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614284953] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:24,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:24,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-09-24 23:05:24,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275232767] [2024-09-24 23:05:24,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:24,477 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-24 23:05:24,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:24,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-24 23:05:24,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-24 23:05:24,478 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:05:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:24,638 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2024-09-24 23:05:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-24 23:05:24,638 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 97 [2024-09-24 23:05:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:24,639 INFO L225 Difference]: With dead ends: 135 [2024-09-24 23:05:24,639 INFO L226 Difference]: Without dead ends: 133 [2024-09-24 23:05:24,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 200 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-24 23:05:24,640 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 26 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:24,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 287 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:24,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-24 23:05:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2024-09-24 23:05:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 102 states have internal predecessors, (115), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2024-09-24 23:05:24,696 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 97 [2024-09-24 23:05:24,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:24,696 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2024-09-24 23:05:24,696 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:05:24,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2024-09-24 23:05:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:24,697 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:24,697 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:24,710 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-09-24 23:05:24,898 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-09-24 23:05:24,898 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:24,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:24,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1261524137, now seen corresponding path program 21 times [2024-09-24 23:05:24,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:24,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023279390] [2024-09-24 23:05:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:24,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:25,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023279390] [2024-09-24 23:05:25,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023279390] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829457515] [2024-09-24 23:05:25,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:05:25,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:25,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:25,279 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:25,281 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-24 23:05:25,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-24 23:05:25,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:25,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:25,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:25,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:26,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829457515] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:26,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:26,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 57 [2024-09-24 23:05:26,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029886132] [2024-09-24 23:05:26,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:26,223 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-24 23:05:26,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-24 23:05:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=2583, Unknown=0, NotChecked=0, Total=3192 [2024-09-24 23:05:26,224 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 57 states, 57 states have (on average 1.6491228070175439) internal successors, (94), 57 states have internal predecessors, (94), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:26,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:26,544 INFO L93 Difference]: Finished difference Result 221 states and 259 transitions. [2024-09-24 23:05:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:26,544 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.6491228070175439) internal successors, (94), 57 states have internal predecessors, (94), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:26,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:26,545 INFO L225 Difference]: With dead ends: 221 [2024-09-24 23:05:26,545 INFO L226 Difference]: Without dead ends: 177 [2024-09-24 23:05:26,546 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 181 SyntacticMatches, 24 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=617, Invalid=2689, Unknown=0, NotChecked=0, Total=3306 [2024-09-24 23:05:26,546 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:26,546 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 325 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:26,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-09-24 23:05:26,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 130. [2024-09-24 23:05:26,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:26,612 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:26,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:26,612 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:26,613 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.6491228070175439) internal successors, (94), 57 states have internal predecessors, (94), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:26,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:26,613 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:26,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:26,613 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:26,613 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:26,627 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-09-24 23:05:26,814 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-09-24 23:05:26,814 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:26,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1723474390, now seen corresponding path program 46 times [2024-09-24 23:05:26,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:26,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104202348] [2024-09-24 23:05:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:26,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 178 proven. 87 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:27,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:27,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104202348] [2024-09-24 23:05:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104202348] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854488900] [2024-09-24 23:05:27,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:05:27,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:27,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:27,141 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:27,142 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-24 23:05:27,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:05:27,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:27,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:27,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 209 proven. 56 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:27,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 209 proven. 56 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:28,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854488900] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:28,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:28,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2024-09-24 23:05:28,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393960303] [2024-09-24 23:05:28,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:28,027 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-24 23:05:28,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-24 23:05:28,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=2508, Unknown=0, NotChecked=0, Total=3080 [2024-09-24 23:05:28,028 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 56 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 56 states have internal predecessors, (93), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:28,422 INFO L93 Difference]: Finished difference Result 231 states and 269 transitions. [2024-09-24 23:05:28,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:28,422 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 56 states have internal predecessors, (93), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:28,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:28,424 INFO L225 Difference]: With dead ends: 231 [2024-09-24 23:05:28,424 INFO L226 Difference]: Without dead ends: 187 [2024-09-24 23:05:28,425 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 182 SyntacticMatches, 24 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2436 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=580, Invalid=2612, Unknown=0, NotChecked=0, Total=3192 [2024-09-24 23:05:28,425 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:28,425 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 372 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-24 23:05:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 130. [2024-09-24 23:05:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:28,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:28,516 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:28,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:28,516 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:28,516 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 56 states have internal predecessors, (93), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:28,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:28,516 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:28,517 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:28,517 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:28,532 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:28,717 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:28,717 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:28,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:28,718 INFO L85 PathProgramCache]: Analyzing trace with hash -396992649, now seen corresponding path program 47 times [2024-09-24 23:05:28,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:28,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165646748] [2024-09-24 23:05:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:28,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 178 proven. 79 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:29,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:29,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165646748] [2024-09-24 23:05:29,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165646748] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:29,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702250580] [2024-09-24 23:05:29,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:05:29,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:29,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:29,040 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:29,041 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-24 23:05:29,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-24 23:05:29,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:29,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:29,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 209 proven. 48 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:29,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 209 proven. 48 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:29,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702250580] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:29,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:29,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 55 [2024-09-24 23:05:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771718333] [2024-09-24 23:05:29,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:29,948 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-24 23:05:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-24 23:05:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=2431, Unknown=0, NotChecked=0, Total=2970 [2024-09-24 23:05:29,948 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 55 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 55 states have internal predecessors, (92), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:30,503 INFO L93 Difference]: Finished difference Result 239 states and 277 transitions. [2024-09-24 23:05:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:30,504 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 55 states have internal predecessors, (92), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:30,506 INFO L225 Difference]: With dead ends: 239 [2024-09-24 23:05:30,506 INFO L226 Difference]: Without dead ends: 195 [2024-09-24 23:05:30,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 183 SyntacticMatches, 24 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=547, Invalid=2533, Unknown=0, NotChecked=0, Total=3080 [2024-09-24 23:05:30,507 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:30,507 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 356 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:30,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-24 23:05:30,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 130. [2024-09-24 23:05:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:30,610 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:30,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:30,611 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:30,611 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 55 states have internal predecessors, (92), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:30,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:30,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:30,611 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:30,611 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:30,629 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:30,812 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:30,813 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:30,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:30,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1197173174, now seen corresponding path program 48 times [2024-09-24 23:05:30,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:30,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628866832] [2024-09-24 23:05:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:30,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 178 proven. 73 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:31,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:31,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628866832] [2024-09-24 23:05:31,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628866832] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:31,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377548234] [2024-09-24 23:05:31,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:05:31,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:31,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:31,237 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:31,239 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-24 23:05:31,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-24 23:05:31,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:31,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:31,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 209 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:31,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 209 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:32,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377548234] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:32,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:32,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 54 [2024-09-24 23:05:32,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955233325] [2024-09-24 23:05:32,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:32,088 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-24 23:05:32,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:32,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-24 23:05:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2024-09-24 23:05:32,089 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 54 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 54 states have internal predecessors, (91), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:32,520 INFO L93 Difference]: Finished difference Result 245 states and 283 transitions. [2024-09-24 23:05:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:32,521 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 54 states have internal predecessors, (91), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:32,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:32,522 INFO L225 Difference]: With dead ends: 245 [2024-09-24 23:05:32,522 INFO L226 Difference]: Without dead ends: 201 [2024-09-24 23:05:32,523 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 184 SyntacticMatches, 24 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2173 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=518, Invalid=2452, Unknown=0, NotChecked=0, Total=2970 [2024-09-24 23:05:32,523 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:32,523 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 277 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-24 23:05:32,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 130. [2024-09-24 23:05:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:32,595 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:32,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:32,595 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:32,595 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 54 states have internal predecessors, (91), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:32,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:32,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:32,596 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:32,596 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:32,608 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:32,796 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:32,797 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:32,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1937990761, now seen corresponding path program 49 times [2024-09-24 23:05:32,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:32,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405227903] [2024-09-24 23:05:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:32,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 178 proven. 69 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405227903] [2024-09-24 23:05:33,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405227903] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902483731] [2024-09-24 23:05:33,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:05:33,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:33,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:33,115 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:33,116 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-24 23:05:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:33,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:33,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 209 proven. 38 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:33,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 209 proven. 38 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:33,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902483731] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:33,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:33,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 53 [2024-09-24 23:05:33,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982550563] [2024-09-24 23:05:33,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:33,994 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-24 23:05:33,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:33,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-24 23:05:33,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=2271, Unknown=0, NotChecked=0, Total=2756 [2024-09-24 23:05:33,995 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 53 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 53 states have internal predecessors, (90), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:34,502 INFO L93 Difference]: Finished difference Result 249 states and 287 transitions. [2024-09-24 23:05:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:34,502 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 53 states have internal predecessors, (90), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:34,504 INFO L225 Difference]: With dead ends: 249 [2024-09-24 23:05:34,504 INFO L226 Difference]: Without dead ends: 205 [2024-09-24 23:05:34,505 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 185 SyntacticMatches, 24 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=493, Invalid=2369, Unknown=0, NotChecked=0, Total=2862 [2024-09-24 23:05:34,505 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:34,505 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 333 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:34,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-09-24 23:05:34,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 130. [2024-09-24 23:05:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:34,591 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:34,591 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:34,591 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 53 states have internal predecessors, (90), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:34,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:34,592 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:34,592 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:34,604 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:34,792 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:34,792 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:34,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:34,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1701652886, now seen corresponding path program 50 times [2024-09-24 23:05:34,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:34,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708679822] [2024-09-24 23:05:34,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:34,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 178 proven. 67 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:35,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:35,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708679822] [2024-09-24 23:05:35,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708679822] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:35,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368753547] [2024-09-24 23:05:35,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:05:35,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:35,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:35,104 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:35,105 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-24 23:05:35,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:05:35,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:35,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:35,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 209 proven. 36 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:35,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 209 proven. 36 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368753547] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:35,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 52 [2024-09-24 23:05:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864570174] [2024-09-24 23:05:35,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:35,923 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-24 23:05:35,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-24 23:05:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2188, Unknown=0, NotChecked=0, Total=2652 [2024-09-24 23:05:35,923 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 52 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:36,392 INFO L93 Difference]: Finished difference Result 251 states and 289 transitions. [2024-09-24 23:05:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:36,393 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:36,394 INFO L225 Difference]: With dead ends: 251 [2024-09-24 23:05:36,394 INFO L226 Difference]: Without dead ends: 207 [2024-09-24 23:05:36,394 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 186 SyntacticMatches, 24 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=472, Invalid=2284, Unknown=0, NotChecked=0, Total=2756 [2024-09-24 23:05:36,394 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:36,395 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 277 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-09-24 23:05:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 130. [2024-09-24 23:05:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:36,468 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:36,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:36,469 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:36,469 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 52 states have internal predecessors, (89), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:36,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:36,469 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:36,469 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:36,469 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:36,484 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-09-24 23:05:36,670 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:36,670 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:36,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash -951885897, now seen corresponding path program 51 times [2024-09-24 23:05:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:36,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113900025] [2024-09-24 23:05:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 178 proven. 67 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:36,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113900025] [2024-09-24 23:05:36,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113900025] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716222325] [2024-09-24 23:05:36,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:05:36,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:36,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:36,980 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:36,981 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-24 23:05:37,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-24 23:05:37,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:37,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:37,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 209 proven. 36 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:37,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 209 proven. 36 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:37,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716222325] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:37,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:37,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 51 [2024-09-24 23:05:37,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359091027] [2024-09-24 23:05:37,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:37,793 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-24 23:05:37,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:37,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-24 23:05:37,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=2103, Unknown=0, NotChecked=0, Total=2550 [2024-09-24 23:05:37,794 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 51 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 51 states have internal predecessors, (88), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:38,246 INFO L93 Difference]: Finished difference Result 251 states and 289 transitions. [2024-09-24 23:05:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:38,246 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 51 states have internal predecessors, (88), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:38,248 INFO L225 Difference]: With dead ends: 251 [2024-09-24 23:05:38,248 INFO L226 Difference]: Without dead ends: 207 [2024-09-24 23:05:38,248 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 187 SyntacticMatches, 24 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=455, Invalid=2197, Unknown=0, NotChecked=0, Total=2652 [2024-09-24 23:05:38,248 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:38,248 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 267 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:38,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-09-24 23:05:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 130. [2024-09-24 23:05:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:38,325 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:38,325 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:38,325 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 51 states have internal predecessors, (88), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:38,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:38,325 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:38,326 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:38,326 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:38,342 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:38,526 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:38,527 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:38,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash -760389258, now seen corresponding path program 52 times [2024-09-24 23:05:38,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:38,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64331142] [2024-09-24 23:05:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:38,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 178 proven. 69 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:38,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:38,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64331142] [2024-09-24 23:05:38,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64331142] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:38,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162627380] [2024-09-24 23:05:38,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:05:38,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:38,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:38,900 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:38,901 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-24 23:05:38,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:05:38,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:38,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:38,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 209 proven. 38 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:39,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 209 proven. 38 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:39,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162627380] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:39,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:39,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 50 [2024-09-24 23:05:39,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234725015] [2024-09-24 23:05:39,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:39,705 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-24 23:05:39,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:39,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-24 23:05:39,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=2016, Unknown=0, NotChecked=0, Total=2450 [2024-09-24 23:05:39,706 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 50 states, 50 states have (on average 1.74) internal successors, (87), 50 states have internal predecessors, (87), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:40,233 INFO L93 Difference]: Finished difference Result 249 states and 287 transitions. [2024-09-24 23:05:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:40,234 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.74) internal successors, (87), 50 states have internal predecessors, (87), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:40,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:40,235 INFO L225 Difference]: With dead ends: 249 [2024-09-24 23:05:40,235 INFO L226 Difference]: Without dead ends: 205 [2024-09-24 23:05:40,235 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 188 SyntacticMatches, 24 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=442, Invalid=2108, Unknown=0, NotChecked=0, Total=2550 [2024-09-24 23:05:40,236 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:40,236 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 354 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:40,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-09-24 23:05:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 130. [2024-09-24 23:05:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:40,320 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:40,320 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:40,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.74) internal successors, (87), 50 states have internal predecessors, (87), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:40,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:40,320 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:40,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:40,321 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:40,321 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:40,337 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:40,521 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:40,521 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:40,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:40,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1462545367, now seen corresponding path program 53 times [2024-09-24 23:05:40,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:40,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889854504] [2024-09-24 23:05:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:40,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 178 proven. 73 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:40,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:40,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889854504] [2024-09-24 23:05:40,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889854504] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:40,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395141890] [2024-09-24 23:05:40,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:05:40,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:40,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:40,830 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:40,831 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-24 23:05:40,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-24 23:05:40,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:40,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:40,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 209 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:41,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 209 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:41,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395141890] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:41,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:41,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 49 [2024-09-24 23:05:41,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691147286] [2024-09-24 23:05:41,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:41,614 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-24 23:05:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:41,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-24 23:05:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1927, Unknown=0, NotChecked=0, Total=2352 [2024-09-24 23:05:41,615 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 49 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 49 states have internal predecessors, (86), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:42,094 INFO L93 Difference]: Finished difference Result 245 states and 283 transitions. [2024-09-24 23:05:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:42,094 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 49 states have internal predecessors, (86), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:42,096 INFO L225 Difference]: With dead ends: 245 [2024-09-24 23:05:42,096 INFO L226 Difference]: Without dead ends: 201 [2024-09-24 23:05:42,096 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 189 SyntacticMatches, 24 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=433, Invalid=2017, Unknown=0, NotChecked=0, Total=2450 [2024-09-24 23:05:42,096 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:42,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 395 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-24 23:05:42,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 130. [2024-09-24 23:05:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:42,194 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:42,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:42,194 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:42,194 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 49 states have internal predecessors, (86), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:42,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:42,195 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:42,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:42,195 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:42,212 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:42,396 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:42,396 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:42,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:42,396 INFO L85 PathProgramCache]: Analyzing trace with hash -128315050, now seen corresponding path program 54 times [2024-09-24 23:05:42,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:42,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696938140] [2024-09-24 23:05:42,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:42,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 178 proven. 79 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:42,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:42,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696938140] [2024-09-24 23:05:42,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696938140] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:42,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959210979] [2024-09-24 23:05:42,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:05:42,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:42,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:42,699 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:42,700 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-24 23:05:42,752 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-24 23:05:42,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:42,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:42,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 209 proven. 48 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:43,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 209 proven. 48 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:43,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959210979] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:43,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:43,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 48 [2024-09-24 23:05:43,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907585452] [2024-09-24 23:05:43,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:43,465 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-24 23:05:43,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:43,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-24 23:05:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1836, Unknown=0, NotChecked=0, Total=2256 [2024-09-24 23:05:43,466 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 48 states have internal predecessors, (85), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:44,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:44,068 INFO L93 Difference]: Finished difference Result 239 states and 277 transitions. [2024-09-24 23:05:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:44,068 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 48 states have internal predecessors, (85), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:44,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:44,070 INFO L225 Difference]: With dead ends: 239 [2024-09-24 23:05:44,070 INFO L226 Difference]: Without dead ends: 195 [2024-09-24 23:05:44,070 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 190 SyntacticMatches, 24 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1456 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1924, Unknown=0, NotChecked=0, Total=2352 [2024-09-24 23:05:44,070 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:44,071 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 279 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-24 23:05:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 130. [2024-09-24 23:05:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:44,176 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:44,176 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:44,177 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 48 states have internal predecessors, (85), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:44,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:44,179 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:44,179 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:44,196 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:44,379 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2024-09-24 23:05:44,380 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:44,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1288011785, now seen corresponding path program 55 times [2024-09-24 23:05:44,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:44,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391597402] [2024-09-24 23:05:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:44,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 178 proven. 87 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:44,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:44,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391597402] [2024-09-24 23:05:44,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391597402] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:44,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561514565] [2024-09-24 23:05:44,789 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:05:44,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:44,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:44,791 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:44,793 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-24 23:05:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:44,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:44,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 209 proven. 56 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:45,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 209 proven. 56 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:45,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561514565] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:45,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:45,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 47 [2024-09-24 23:05:45,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507963164] [2024-09-24 23:05:45,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:45,565 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-24 23:05:45,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:45,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-24 23:05:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1743, Unknown=0, NotChecked=0, Total=2162 [2024-09-24 23:05:45,566 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 47 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 47 states have internal predecessors, (84), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:45,944 INFO L93 Difference]: Finished difference Result 231 states and 269 transitions. [2024-09-24 23:05:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:45,944 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 47 states have internal predecessors, (84), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:45,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:45,946 INFO L225 Difference]: With dead ends: 231 [2024-09-24 23:05:45,946 INFO L226 Difference]: Without dead ends: 187 [2024-09-24 23:05:45,946 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 191 SyntacticMatches, 24 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=427, Invalid=1829, Unknown=0, NotChecked=0, Total=2256 [2024-09-24 23:05:45,947 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:45,947 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 256 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:45,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-24 23:05:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 130. [2024-09-24 23:05:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-09-24 23:05:46,029 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2024-09-24 23:05:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:46,029 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-09-24 23:05:46,029 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 47 states have internal predecessors, (84), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:46,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-09-24 23:05:46,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:05:46,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:46,030 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:46,041 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2024-09-24 23:05:46,230 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-09-24 23:05:46,230 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:46,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1999714614, now seen corresponding path program 11 times [2024-09-24 23:05:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:46,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412733611] [2024-09-24 23:05:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:05:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-24 23:05:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-24 23:05:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-24 23:05:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:05:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-24 23:05:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:05:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:05:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:05:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-24 23:05:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:05:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:46,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:46,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412733611] [2024-09-24 23:05:46,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412733611] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:46,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740074155] [2024-09-24 23:05:46,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:05:46,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:46,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:46,556 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:46,557 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-24 23:05:46,608 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-24 23:05:46,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:46,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-24 23:05:46,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:47,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740074155] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:47,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:47,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 46 [2024-09-24 23:05:47,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101547514] [2024-09-24 23:05:47,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:47,288 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-24 23:05:47,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:47,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-24 23:05:47,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1648, Unknown=0, NotChecked=0, Total=2070 [2024-09-24 23:05:47,289 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 46 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 46 states have internal predecessors, (83), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:47,672 INFO L93 Difference]: Finished difference Result 224 states and 263 transitions. [2024-09-24 23:05:47,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-24 23:05:47,673 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 46 states have internal predecessors, (83), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 104 [2024-09-24 23:05:47,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:47,674 INFO L225 Difference]: With dead ends: 224 [2024-09-24 23:05:47,674 INFO L226 Difference]: Without dead ends: 180 [2024-09-24 23:05:47,674 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=430, Invalid=1732, Unknown=0, NotChecked=0, Total=2162 [2024-09-24 23:05:47,675 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:47,675 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 518 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:47,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-09-24 23:05:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 132. [2024-09-24 23:05:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 105 states have internal predecessors, (119), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:05:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2024-09-24 23:05:47,760 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 104 [2024-09-24 23:05:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:47,760 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2024-09-24 23:05:47,760 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 46 states have internal predecessors, (83), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:05:47,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2024-09-24 23:05:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-09-24 23:05:47,761 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:47,761 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:47,775 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-09-24 23:05:47,961 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:47,962 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:47,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:47,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1609644226, now seen corresponding path program 22 times [2024-09-24 23:05:47,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:47,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030827925] [2024-09-24 23:05:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:47,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:05:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:05:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:05:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:05:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:05:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:05:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:05:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:05:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:05:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:05:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:05:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:48,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:48,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030827925] [2024-09-24 23:05:48,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030827925] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:48,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222840687] [2024-09-24 23:05:48,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:05:48,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:48,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:48,142 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:48,144 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-24 23:05:48,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:05:48,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:48,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:05:48,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:48,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:05:48,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222840687] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:48,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:48,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-24 23:05:48,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457165921] [2024-09-24 23:05:48,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:48,447 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-24 23:05:48,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:48,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-24 23:05:48,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-24 23:05:48,447 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:48,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:48,623 INFO L93 Difference]: Finished difference Result 145 states and 160 transitions. [2024-09-24 23:05:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-24 23:05:48,623 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 105 [2024-09-24 23:05:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:48,624 INFO L225 Difference]: With dead ends: 145 [2024-09-24 23:05:48,624 INFO L226 Difference]: Without dead ends: 143 [2024-09-24 23:05:48,624 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 219 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-09-24 23:05:48,625 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 31 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:48,625 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 245 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:05:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-09-24 23:05:48,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2024-09-24 23:05:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 109 states have (on average 1.1376146788990826) internal successors, (124), 110 states have internal predecessors, (124), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:05:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2024-09-24 23:05:48,709 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 105 [2024-09-24 23:05:48,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:48,709 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2024-09-24 23:05:48,709 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:05:48,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2024-09-24 23:05:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:05:48,710 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:48,710 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:48,721 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-09-24 23:05:48,910 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:48,910 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:48,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:48,911 INFO L85 PathProgramCache]: Analyzing trace with hash -367943082, now seen corresponding path program 23 times [2024-09-24 23:05:48,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:48,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759110649] [2024-09-24 23:05:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:05:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:05:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:05:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:05:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:05:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:05:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:05:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:05:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:05:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:05:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:05:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:05:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:49,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759110649] [2024-09-24 23:05:49,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759110649] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721167922] [2024-09-24 23:05:49,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:05:49,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:49,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:49,275 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:49,276 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-24 23:05:49,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-24 23:05:49,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:49,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:05:49,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:49,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:50,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721167922] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:50,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:50,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-09-24 23:05:50,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700947343] [2024-09-24 23:05:50,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:50,311 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-24 23:05:50,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:50,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-24 23:05:50,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=2963, Unknown=0, NotChecked=0, Total=3660 [2024-09-24 23:05:50,312 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 61 states, 61 states have (on average 1.639344262295082) internal successors, (100), 61 states have internal predecessors, (100), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:05:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:50,708 INFO L93 Difference]: Finished difference Result 238 states and 279 transitions. [2024-09-24 23:05:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:05:50,709 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.639344262295082) internal successors, (100), 61 states have internal predecessors, (100), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:05:50,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:50,710 INFO L225 Difference]: With dead ends: 238 [2024-09-24 23:05:50,710 INFO L226 Difference]: Without dead ends: 191 [2024-09-24 23:05:50,711 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 195 SyntacticMatches, 26 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2939 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=3077, Unknown=0, NotChecked=0, Total=3782 [2024-09-24 23:05:50,711 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:50,711 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 406 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-09-24 23:05:50,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 140. [2024-09-24 23:05:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:05:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:05:50,800 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:05:50,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:50,801 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:05:50,801 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.639344262295082) internal successors, (100), 61 states have internal predecessors, (100), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:05:50,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:50,801 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:05:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:05:50,801 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:50,801 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:50,813 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2024-09-24 23:05:51,002 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:51,002 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:51,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1709561387, now seen corresponding path program 56 times [2024-09-24 23:05:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:51,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25541875] [2024-09-24 23:05:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:05:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:05:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:05:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:05:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:05:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:05:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:05:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:05:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:05:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:05:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:05:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:05:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 212 proven. 101 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:51,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:51,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25541875] [2024-09-24 23:05:51,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25541875] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:51,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551427634] [2024-09-24 23:05:51,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:05:51,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:51,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:51,368 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:51,370 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-24 23:05:51,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:05:51,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:51,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:05:51,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:52,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:52,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551427634] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:52,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:52,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 60 [2024-09-24 23:05:52,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820514740] [2024-09-24 23:05:52,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:52,378 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-24 23:05:52,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:52,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-24 23:05:52,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=657, Invalid=2883, Unknown=0, NotChecked=0, Total=3540 [2024-09-24 23:05:52,379 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 60 states, 60 states have (on average 1.65) internal successors, (99), 60 states have internal predecessors, (99), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:05:52,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:52,839 INFO L93 Difference]: Finished difference Result 249 states and 290 transitions. [2024-09-24 23:05:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:05:52,839 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.65) internal successors, (99), 60 states have internal predecessors, (99), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:05:52,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:52,841 INFO L225 Difference]: With dead ends: 249 [2024-09-24 23:05:52,841 INFO L226 Difference]: Without dead ends: 202 [2024-09-24 23:05:52,841 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 196 SyntacticMatches, 26 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2842 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=665, Invalid=2995, Unknown=0, NotChecked=0, Total=3660 [2024-09-24 23:05:52,842 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:52,842 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 342 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:52,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-09-24 23:05:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2024-09-24 23:05:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:05:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:05:52,943 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:05:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:52,943 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:05:52,943 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.65) internal successors, (99), 60 states have internal predecessors, (99), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:05:52,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:05:52,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:05:52,944 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:52,944 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:52,956 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2024-09-24 23:05:53,144 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:53,144 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:53,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:53,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1295201910, now seen corresponding path program 57 times [2024-09-24 23:05:53,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:53,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676660424] [2024-09-24 23:05:53,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:53,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:05:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:05:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:05:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:05:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:05:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:05:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:05:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:05:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:05:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:05:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:05:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:05:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 212 proven. 92 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:53,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:53,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676660424] [2024-09-24 23:05:53,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676660424] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:53,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090048482] [2024-09-24 23:05:53,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:05:53,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:53,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:53,498 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:53,500 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-24 23:05:53,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-09-24 23:05:53,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:53,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:05:53,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 246 proven. 58 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:54,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 246 proven. 58 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090048482] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:54,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:54,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 59 [2024-09-24 23:05:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548387953] [2024-09-24 23:05:54,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:54,481 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-24 23:05:54,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:54,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-24 23:05:54,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=2801, Unknown=0, NotChecked=0, Total=3422 [2024-09-24 23:05:54,482 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 59 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 59 states have internal predecessors, (98), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:05:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:55,019 INFO L93 Difference]: Finished difference Result 258 states and 299 transitions. [2024-09-24 23:05:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:05:55,019 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 59 states have internal predecessors, (98), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:05:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:55,020 INFO L225 Difference]: With dead ends: 258 [2024-09-24 23:05:55,020 INFO L226 Difference]: Without dead ends: 211 [2024-09-24 23:05:55,021 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 197 SyntacticMatches, 26 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2698 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=629, Invalid=2911, Unknown=0, NotChecked=0, Total=3540 [2024-09-24 23:05:55,021 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:55,021 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 394 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:55,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-24 23:05:55,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 140. [2024-09-24 23:05:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:05:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:05:55,120 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:05:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:55,120 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:05:55,121 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 59 states have internal predecessors, (98), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:05:55,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:05:55,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:05:55,121 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:55,121 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:55,133 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2024-09-24 23:05:55,321 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:55,322 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:55,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash 6656437, now seen corresponding path program 58 times [2024-09-24 23:05:55,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:55,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646245798] [2024-09-24 23:05:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:55,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:05:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:05:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:05:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:05:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:05:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:05:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:05:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:05:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:05:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:05:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:05:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:05:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 212 proven. 85 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:55,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:55,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646245798] [2024-09-24 23:05:55,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646245798] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:55,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095426304] [2024-09-24 23:05:55,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:05:55,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:55,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:55,676 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:55,676 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-24 23:05:55,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:05:55,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:55,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:05:55,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:56,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:56,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095426304] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:56,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:56,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 58 [2024-09-24 23:05:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227996446] [2024-09-24 23:05:56,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:56,667 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-24 23:05:56,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:56,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-24 23:05:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=589, Invalid=2717, Unknown=0, NotChecked=0, Total=3306 [2024-09-24 23:05:56,668 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 58 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 58 states have internal predecessors, (97), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:05:57,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:57,492 INFO L93 Difference]: Finished difference Result 265 states and 306 transitions. [2024-09-24 23:05:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:05:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 58 states have internal predecessors, (97), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:05:57,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:57,494 INFO L225 Difference]: With dead ends: 265 [2024-09-24 23:05:57,494 INFO L226 Difference]: Without dead ends: 218 [2024-09-24 23:05:57,494 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 198 SyntacticMatches, 26 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=597, Invalid=2825, Unknown=0, NotChecked=0, Total=3422 [2024-09-24 23:05:57,495 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:57,495 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 350 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:05:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-09-24 23:05:57,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 140. [2024-09-24 23:05:57,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:05:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:05:57,601 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:05:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:57,601 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:05:57,601 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 58 states have internal predecessors, (97), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:05:57,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:57,601 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:05:57,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:05:57,602 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:57,602 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:57,614 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-09-24 23:05:57,802 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:57,802 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:05:57,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:57,803 INFO L85 PathProgramCache]: Analyzing trace with hash -34909546, now seen corresponding path program 59 times [2024-09-24 23:05:57,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:05:57,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2801921] [2024-09-24 23:05:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:05:57,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:05:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:05:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:05:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:05:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:05:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:05:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:05:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:05:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:05:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:05:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:05:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:05:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:05:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:05:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:05:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 212 proven. 80 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:58,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:05:58,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2801921] [2024-09-24 23:05:58,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2801921] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:05:58,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193914252] [2024-09-24 23:05:58,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:05:58,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:05:58,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:05:58,153 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:05:58,154 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-24 23:05:58,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-24 23:05:58,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:05:58,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:05:58,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:05:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 246 proven. 46 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:58,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:05:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 246 proven. 46 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:05:59,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193914252] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:05:59,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:05:59,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 57 [2024-09-24 23:05:59,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809677878] [2024-09-24 23:05:59,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:05:59,086 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-24 23:05:59,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:05:59,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-24 23:05:59,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=2631, Unknown=0, NotChecked=0, Total=3192 [2024-09-24 23:05:59,087 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 57 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 57 states have internal predecessors, (96), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:05:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:05:59,704 INFO L93 Difference]: Finished difference Result 270 states and 311 transitions. [2024-09-24 23:05:59,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:05:59,705 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 57 states have internal predecessors, (96), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:05:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:05:59,706 INFO L225 Difference]: With dead ends: 270 [2024-09-24 23:05:59,706 INFO L226 Difference]: Without dead ends: 223 [2024-09-24 23:05:59,707 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 199 SyntacticMatches, 26 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2419 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=569, Invalid=2737, Unknown=0, NotChecked=0, Total=3306 [2024-09-24 23:05:59,707 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:05:59,707 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 307 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:05:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-09-24 23:05:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 140. [2024-09-24 23:05:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:05:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:05:59,821 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:05:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:05:59,821 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:05:59,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 57 states have internal predecessors, (96), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:05:59,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:05:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:05:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:05:59,822 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:05:59,822 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:05:59,834 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-09-24 23:06:00,022 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:00,023 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:00,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:00,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1210675605, now seen corresponding path program 60 times [2024-09-24 23:06:00,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:00,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792767221] [2024-09-24 23:06:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:00,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:06:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:06:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:06:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:06:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:06:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:06:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:06:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:06:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:06:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:06:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:06:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:06:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 212 proven. 77 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:00,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:00,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792767221] [2024-09-24 23:06:00,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792767221] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:00,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154957342] [2024-09-24 23:06:00,373 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:06:00,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:00,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:00,375 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:00,375 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-09-24 23:06:00,432 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-24 23:06:00,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:00,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:06:00,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:01,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:01,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154957342] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:01,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:01,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 56 [2024-09-24 23:06:01,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468560456] [2024-09-24 23:06:01,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:01,369 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-24 23:06:01,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:01,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-24 23:06:01,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=2543, Unknown=0, NotChecked=0, Total=3080 [2024-09-24 23:06:01,370 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 56 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 56 states have internal predecessors, (95), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:02,021 INFO L93 Difference]: Finished difference Result 273 states and 314 transitions. [2024-09-24 23:06:02,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:06:02,021 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 56 states have internal predecessors, (95), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:06:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:02,023 INFO L225 Difference]: With dead ends: 273 [2024-09-24 23:06:02,023 INFO L226 Difference]: Without dead ends: 226 [2024-09-24 23:06:02,023 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 200 SyntacticMatches, 26 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2284 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=545, Invalid=2647, Unknown=0, NotChecked=0, Total=3192 [2024-09-24 23:06:02,023 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:02,023 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 346 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-09-24 23:06:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 140. [2024-09-24 23:06:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:06:02,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:06:02,136 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:06:02,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:02,136 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:06:02,136 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 56 states have internal predecessors, (95), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:02,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:02,136 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:06:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:06:02,137 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:02,137 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:02,149 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2024-09-24 23:06:02,337 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:02,337 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:02,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:02,338 INFO L85 PathProgramCache]: Analyzing trace with hash 3929782, now seen corresponding path program 61 times [2024-09-24 23:06:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:02,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340718883] [2024-09-24 23:06:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:02,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:06:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:06:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:06:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:06:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:06:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:06:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:06:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:06:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:06:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:06:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:06:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:06:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 212 proven. 76 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:02,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:02,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340718883] [2024-09-24 23:06:02,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340718883] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:02,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483214089] [2024-09-24 23:06:02,689 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:06:02,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:02,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:02,690 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:02,691 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-09-24 23:06:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:02,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:06:02,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 246 proven. 42 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:03,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 246 proven. 42 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483214089] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:03,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:03,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 55 [2024-09-24 23:06:03,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52384332] [2024-09-24 23:06:03,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:03,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-24 23:06:03,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:03,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-24 23:06:03,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=2453, Unknown=0, NotChecked=0, Total=2970 [2024-09-24 23:06:03,754 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 55 states, 55 states have (on average 1.709090909090909) internal successors, (94), 55 states have internal predecessors, (94), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:04,395 INFO L93 Difference]: Finished difference Result 274 states and 315 transitions. [2024-09-24 23:06:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:06:04,395 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.709090909090909) internal successors, (94), 55 states have internal predecessors, (94), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:06:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:04,397 INFO L225 Difference]: With dead ends: 274 [2024-09-24 23:06:04,397 INFO L226 Difference]: Without dead ends: 227 [2024-09-24 23:06:04,398 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 201 SyntacticMatches, 26 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=525, Invalid=2555, Unknown=0, NotChecked=0, Total=3080 [2024-09-24 23:06:04,398 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:04,398 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 303 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-24 23:06:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 140. [2024-09-24 23:06:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:06:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:06:04,553 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:06:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:04,554 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:06:04,554 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.709090909090909) internal successors, (94), 55 states have internal predecessors, (94), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:04,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:04,554 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:06:04,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:06:04,555 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:04,555 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:04,570 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2024-09-24 23:06:04,755 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2024-09-24 23:06:04,756 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:04,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:04,756 INFO L85 PathProgramCache]: Analyzing trace with hash -450639499, now seen corresponding path program 62 times [2024-09-24 23:06:04,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:04,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97276419] [2024-09-24 23:06:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:04,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:06:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:06:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:06:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:06:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:06:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:06:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:06:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:06:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:06:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:06:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:06:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:06:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 212 proven. 77 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:05,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:05,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97276419] [2024-09-24 23:06:05,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97276419] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:05,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257876812] [2024-09-24 23:06:05,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:06:05,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:05,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:05,191 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:05,191 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-09-24 23:06:05,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:06:05,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:05,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:06:05,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:05,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:06,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257876812] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:06,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:06,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 54 [2024-09-24 23:06:06,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484300269] [2024-09-24 23:06:06,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:06,088 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-24 23:06:06,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-24 23:06:06,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=2361, Unknown=0, NotChecked=0, Total=2862 [2024-09-24 23:06:06,089 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:06,786 INFO L93 Difference]: Finished difference Result 273 states and 314 transitions. [2024-09-24 23:06:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:06:06,787 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:06:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:06,788 INFO L225 Difference]: With dead ends: 273 [2024-09-24 23:06:06,788 INFO L226 Difference]: Without dead ends: 226 [2024-09-24 23:06:06,789 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 202 SyntacticMatches, 26 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=509, Invalid=2461, Unknown=0, NotChecked=0, Total=2970 [2024-09-24 23:06:06,789 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:06,789 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 475 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:06,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-09-24 23:06:06,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 140. [2024-09-24 23:06:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:06:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:06:06,900 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:06:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:06,900 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:06:06,900 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:06,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:06,901 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:06:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:06:06,901 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:06,901 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:06,912 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2024-09-24 23:06:07,101 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2024-09-24 23:06:07,102 INFO L399 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:07,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:07,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1890001622, now seen corresponding path program 63 times [2024-09-24 23:06:07,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:07,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977169964] [2024-09-24 23:06:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:07,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:06:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:06:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:06:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:06:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:06:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:06:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:06:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:06:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:06:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:06:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:06:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:06:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 212 proven. 80 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:07,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:07,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977169964] [2024-09-24 23:06:07,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977169964] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:07,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395138319] [2024-09-24 23:06:07,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:06:07,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:07,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:07,448 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:07,449 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-09-24 23:06:07,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-09-24 23:06:07,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:07,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:06:07,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 246 proven. 46 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:08,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 246 proven. 46 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:08,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395138319] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:08,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:08,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 53 [2024-09-24 23:06:08,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041803972] [2024-09-24 23:06:08,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:08,316 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-24 23:06:08,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-24 23:06:08,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=2267, Unknown=0, NotChecked=0, Total=2756 [2024-09-24 23:06:08,317 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 53 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 53 states have internal predecessors, (92), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:08,966 INFO L93 Difference]: Finished difference Result 270 states and 311 transitions. [2024-09-24 23:06:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:06:08,966 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 53 states have internal predecessors, (92), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:06:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:08,967 INFO L225 Difference]: With dead ends: 270 [2024-09-24 23:06:08,968 INFO L226 Difference]: Without dead ends: 223 [2024-09-24 23:06:08,968 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 203 SyntacticMatches, 26 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=497, Invalid=2365, Unknown=0, NotChecked=0, Total=2862 [2024-09-24 23:06:08,968 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:08,968 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 358 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:08,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-09-24 23:06:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 140. [2024-09-24 23:06:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:06:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:06:09,080 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:06:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:09,080 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:06:09,081 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 53 states have internal predecessors, (92), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:09,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:06:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:06:09,081 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:09,081 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:09,098 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2024-09-24 23:06:09,282 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,99 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:09,282 INFO L399 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:09,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash 580032853, now seen corresponding path program 64 times [2024-09-24 23:06:09,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:09,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391706438] [2024-09-24 23:06:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:06:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:06:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:06:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:06:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:06:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:06:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:06:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:06:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:06:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:06:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:06:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:06:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 212 proven. 85 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:09,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:09,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391706438] [2024-09-24 23:06:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391706438] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:09,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389243497] [2024-09-24 23:06:09,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:06:09,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:09,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:09,678 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:09,679 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-09-24 23:06:09,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:06:09,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:09,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:06:09,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:10,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:10,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389243497] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:10,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:10,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 52 [2024-09-24 23:06:10,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072814920] [2024-09-24 23:06:10,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:10,527 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-24 23:06:10,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-24 23:06:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=2171, Unknown=0, NotChecked=0, Total=2652 [2024-09-24 23:06:10,528 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 52 states have internal predecessors, (91), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:11,115 INFO L93 Difference]: Finished difference Result 265 states and 306 transitions. [2024-09-24 23:06:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:06:11,115 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 52 states have internal predecessors, (91), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:06:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:11,117 INFO L225 Difference]: With dead ends: 265 [2024-09-24 23:06:11,117 INFO L226 Difference]: Without dead ends: 218 [2024-09-24 23:06:11,118 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 204 SyntacticMatches, 26 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=489, Invalid=2267, Unknown=0, NotChecked=0, Total=2756 [2024-09-24 23:06:11,118 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:11,118 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 279 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:06:11,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-09-24 23:06:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 140. [2024-09-24 23:06:11,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:06:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:06:11,233 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:06:11,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:11,233 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:06:11,234 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 52 states have internal predecessors, (91), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:11,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:06:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:06:11,234 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:11,234 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:11,247 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2024-09-24 23:06:11,435 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2024-09-24 23:06:11,435 INFO L399 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:11,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1540434186, now seen corresponding path program 65 times [2024-09-24 23:06:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:11,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542723115] [2024-09-24 23:06:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:11,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:06:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:06:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:06:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:06:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:06:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:06:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:06:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:06:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:06:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:06:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:06:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:06:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 212 proven. 92 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:11,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542723115] [2024-09-24 23:06:11,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542723115] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474825726] [2024-09-24 23:06:11,786 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:06:11,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:11,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:11,787 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:11,788 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-09-24 23:06:11,842 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-24 23:06:11,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:11,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:06:11,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 246 proven. 58 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:12,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 246 proven. 58 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:12,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474825726] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:12,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:12,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 51 [2024-09-24 23:06:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678897784] [2024-09-24 23:06:12,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:12,637 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-24 23:06:12,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-24 23:06:12,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=2073, Unknown=0, NotChecked=0, Total=2550 [2024-09-24 23:06:12,638 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 51 states have internal predecessors, (90), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:13,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:13,204 INFO L93 Difference]: Finished difference Result 258 states and 299 transitions. [2024-09-24 23:06:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:06:13,205 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 51 states have internal predecessors, (90), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:06:13,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:13,206 INFO L225 Difference]: With dead ends: 258 [2024-09-24 23:06:13,207 INFO L226 Difference]: Without dead ends: 211 [2024-09-24 23:06:13,207 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 205 SyntacticMatches, 26 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=2167, Unknown=0, NotChecked=0, Total=2652 [2024-09-24 23:06:13,207 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:13,207 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 299 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-24 23:06:13,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 140. [2024-09-24 23:06:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:06:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:06:13,323 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:06:13,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:13,323 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:06:13,323 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 51 states have internal predecessors, (90), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:13,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:13,323 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:06:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:06:13,323 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:13,324 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:13,336 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2024-09-24 23:06:13,524 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-09-24 23:06:13,524 INFO L399 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:13,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash 53731637, now seen corresponding path program 66 times [2024-09-24 23:06:13,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:13,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660930192] [2024-09-24 23:06:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:13,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:06:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:06:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:06:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:06:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:06:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:06:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:06:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:06:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:06:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:06:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:06:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:06:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 212 proven. 101 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:13,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660930192] [2024-09-24 23:06:13,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660930192] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:13,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134196038] [2024-09-24 23:06:13,873 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:06:13,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:13,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:13,874 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:13,874 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-09-24 23:06:13,935 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-24 23:06:13,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:13,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:06:13,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:14,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:14,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134196038] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:14,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:14,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 50 [2024-09-24 23:06:14,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667167216] [2024-09-24 23:06:14,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:14,706 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-24 23:06:14,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-24 23:06:14,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=1973, Unknown=0, NotChecked=0, Total=2450 [2024-09-24 23:06:14,707 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 50 states, 50 states have (on average 1.78) internal successors, (89), 50 states have internal predecessors, (89), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:15,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:15,188 INFO L93 Difference]: Finished difference Result 249 states and 290 transitions. [2024-09-24 23:06:15,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:06:15,189 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.78) internal successors, (89), 50 states have internal predecessors, (89), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:06:15,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:15,190 INFO L225 Difference]: With dead ends: 249 [2024-09-24 23:06:15,190 INFO L226 Difference]: Without dead ends: 202 [2024-09-24 23:06:15,190 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 206 SyntacticMatches, 26 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=2065, Unknown=0, NotChecked=0, Total=2550 [2024-09-24 23:06:15,191 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:15,191 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 306 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:06:15,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-09-24 23:06:15,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2024-09-24 23:06:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 111 states have internal predecessors, (125), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:06:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-09-24 23:06:15,300 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2024-09-24 23:06:15,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:15,300 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-09-24 23:06:15,300 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.78) internal successors, (89), 50 states have internal predecessors, (89), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:15,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:15,301 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-09-24 23:06:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-09-24 23:06:15,301 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:15,302 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:15,318 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2024-09-24 23:06:15,502 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-09-24 23:06:15,502 INFO L399 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:15,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1213534998, now seen corresponding path program 12 times [2024-09-24 23:06:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:15,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515511999] [2024-09-24 23:06:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-24 23:06:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-24 23:06:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-24 23:06:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:06:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-24 23:06:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:06:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-24 23:06:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:06:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:06:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:06:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:06:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-24 23:06:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:15,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:15,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515511999] [2024-09-24 23:06:15,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515511999] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:15,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39290181] [2024-09-24 23:06:15,858 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:06:15,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:15,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:15,860 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:15,860 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-09-24 23:06:15,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-24 23:06:15,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:15,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-24 23:06:15,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:16,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:16,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39290181] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:16,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:16,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 49 [2024-09-24 23:06:16,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12990146] [2024-09-24 23:06:16,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:16,686 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-24 23:06:16,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:16,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-24 23:06:16,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=1871, Unknown=0, NotChecked=0, Total=2352 [2024-09-24 23:06:16,687 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 49 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:17,094 INFO L93 Difference]: Finished difference Result 241 states and 283 transitions. [2024-09-24 23:06:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-24 23:06:17,094 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 49 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 112 [2024-09-24 23:06:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:17,096 INFO L225 Difference]: With dead ends: 241 [2024-09-24 23:06:17,096 INFO L226 Difference]: Without dead ends: 194 [2024-09-24 23:06:17,096 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 207 SyntacticMatches, 26 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1412 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=489, Invalid=1961, Unknown=0, NotChecked=0, Total=2450 [2024-09-24 23:06:17,096 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:17,097 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 252 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:06:17,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-09-24 23:06:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 142. [2024-09-24 23:06:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 113 states have internal predecessors, (128), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:06:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2024-09-24 23:06:17,209 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 112 [2024-09-24 23:06:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:17,209 INFO L474 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2024-09-24 23:06:17,210 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 49 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-24 23:06:17,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2024-09-24 23:06:17,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-09-24 23:06:17,210 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:17,210 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:17,222 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2024-09-24 23:06:17,411 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-09-24 23:06:17,411 INFO L399 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:17,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash -51276607, now seen corresponding path program 24 times [2024-09-24 23:06:17,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:17,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947392127] [2024-09-24 23:06:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:17,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:17,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:17,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947392127] [2024-09-24 23:06:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947392127] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:17,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979409097] [2024-09-24 23:06:17,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:06:17,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:17,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:17,625 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:17,626 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-09-24 23:06:17,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-24 23:06:17,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:17,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:17,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:17,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-24 23:06:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979409097] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:17,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:17,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-09-24 23:06:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138665814] [2024-09-24 23:06:17,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:17,963 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-24 23:06:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-24 23:06:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-09-24 23:06:17,964 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 19 states have internal predecessors, (60), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:06:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:18,202 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2024-09-24 23:06:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-24 23:06:18,203 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 19 states have internal predecessors, (60), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 113 [2024-09-24 23:06:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:18,204 INFO L225 Difference]: With dead ends: 155 [2024-09-24 23:06:18,204 INFO L226 Difference]: Without dead ends: 153 [2024-09-24 23:06:18,204 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 236 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-24 23:06:18,204 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 33 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:18,205 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 329 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:06:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-09-24 23:06:18,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2024-09-24 23:06:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 118 states have internal predecessors, (133), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2024-09-24 23:06:18,360 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 113 [2024-09-24 23:06:18,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:18,360 INFO L474 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2024-09-24 23:06:18,361 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 19 states have internal predecessors, (60), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:06:18,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:18,361 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2024-09-24 23:06:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:18,361 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:18,361 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:18,374 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2024-09-24 23:06:18,562 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-09-24 23:06:18,562 INFO L399 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:18,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash 827365751, now seen corresponding path program 25 times [2024-09-24 23:06:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:18,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484056404] [2024-09-24 23:06:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:18,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:18,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:18,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484056404] [2024-09-24 23:06:18,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484056404] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:18,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022457281] [2024-09-24 23:06:18,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:06:18,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:18,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:18,976 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:18,976 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-09-24 23:06:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:19,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:19,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:19,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:20,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022457281] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:20,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:20,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2024-09-24 23:06:20,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481071700] [2024-09-24 23:06:20,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:20,128 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-24 23:06:20,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:20,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-24 23:06:20,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=791, Invalid=3369, Unknown=0, NotChecked=0, Total=4160 [2024-09-24 23:06:20,129 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand has 65 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 65 states have internal predecessors, (106), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:20,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:20,551 INFO L93 Difference]: Finished difference Result 255 states and 299 transitions. [2024-09-24 23:06:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:20,552 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 65 states have internal predecessors, (106), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:20,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:20,553 INFO L225 Difference]: With dead ends: 255 [2024-09-24 23:06:20,553 INFO L226 Difference]: Without dead ends: 205 [2024-09-24 23:06:20,554 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 209 SyntacticMatches, 28 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3383 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=799, Invalid=3491, Unknown=0, NotChecked=0, Total=4290 [2024-09-24 23:06:20,554 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:20,554 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 326 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:20,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-09-24 23:06:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 150. [2024-09-24 23:06:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:20,684 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:20,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:20,684 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:20,684 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 65 states have internal predecessors, (106), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:20,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:20,685 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:20,685 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:20,697 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2024-09-24 23:06:20,885 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,105 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:20,885 INFO L399 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:20,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:20,886 INFO L85 PathProgramCache]: Analyzing trace with hash -36359690, now seen corresponding path program 67 times [2024-09-24 23:06:20,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:20,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767468495] [2024-09-24 23:06:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:20,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 249 proven. 116 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:21,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767468495] [2024-09-24 23:06:21,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767468495] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994255891] [2024-09-24 23:06:21,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:06:21,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:21,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:21,309 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:21,311 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2024-09-24 23:06:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:21,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:21,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 286 proven. 79 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:22,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 286 proven. 79 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:22,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994255891] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:22,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:22,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2024-09-24 23:06:22,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301368787] [2024-09-24 23:06:22,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:22,493 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-24 23:06:22,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:22,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-24 23:06:22,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=3284, Unknown=0, NotChecked=0, Total=4032 [2024-09-24 23:06:22,499 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 64 states, 64 states have (on average 1.640625) internal successors, (105), 64 states have internal predecessors, (105), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:23,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:23,122 INFO L93 Difference]: Finished difference Result 267 states and 311 transitions. [2024-09-24 23:06:23,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:23,123 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.640625) internal successors, (105), 64 states have internal predecessors, (105), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:23,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:23,124 INFO L225 Difference]: With dead ends: 267 [2024-09-24 23:06:23,124 INFO L226 Difference]: Without dead ends: 217 [2024-09-24 23:06:23,125 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 210 SyntacticMatches, 28 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3279 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=756, Invalid=3404, Unknown=0, NotChecked=0, Total=4160 [2024-09-24 23:06:23,125 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:23,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 485 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-24 23:06:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 150. [2024-09-24 23:06:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:23,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:23,261 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:23,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:23,261 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:23,261 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.640625) internal successors, (105), 64 states have internal predecessors, (105), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:23,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:23,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:23,262 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:23,262 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:23,274 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2024-09-24 23:06:23,462 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2024-09-24 23:06:23,462 INFO L399 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:23,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:23,463 INFO L85 PathProgramCache]: Analyzing trace with hash -64221801, now seen corresponding path program 68 times [2024-09-24 23:06:23,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:23,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235396537] [2024-09-24 23:06:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:23,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 249 proven. 106 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:23,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235396537] [2024-09-24 23:06:23,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235396537] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114665969] [2024-09-24 23:06:23,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:06:23,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:23,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:23,864 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:23,865 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2024-09-24 23:06:23,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:06:23,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:23,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:23,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 286 proven. 69 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:24,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 286 proven. 69 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114665969] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:24,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 63 [2024-09-24 23:06:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071215237] [2024-09-24 23:06:24,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:24,947 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-09-24 23:06:24,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-09-24 23:06:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=3197, Unknown=0, NotChecked=0, Total=3906 [2024-09-24 23:06:24,948 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 63 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 63 states have internal predecessors, (104), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:25,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:25,637 INFO L93 Difference]: Finished difference Result 277 states and 321 transitions. [2024-09-24 23:06:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:25,637 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 63 states have internal predecessors, (104), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:25,639 INFO L225 Difference]: With dead ends: 277 [2024-09-24 23:06:25,639 INFO L226 Difference]: Without dead ends: 227 [2024-09-24 23:06:25,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 211 SyntacticMatches, 28 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3124 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=717, Invalid=3315, Unknown=0, NotChecked=0, Total=4032 [2024-09-24 23:06:25,639 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:25,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 388 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-24 23:06:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 150. [2024-09-24 23:06:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:25,780 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:25,780 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:25,780 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 63 states have internal predecessors, (104), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:25,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:25,781 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:25,781 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:25,793 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2024-09-24 23:06:25,981 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,107 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:25,981 INFO L399 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:25,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:25,982 INFO L85 PathProgramCache]: Analyzing trace with hash 766163414, now seen corresponding path program 69 times [2024-09-24 23:06:25,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:25,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102162803] [2024-09-24 23:06:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:25,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 249 proven. 98 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:26,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:26,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102162803] [2024-09-24 23:06:26,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102162803] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:26,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269321754] [2024-09-24 23:06:26,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:06:26,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:26,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:26,375 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:26,376 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2024-09-24 23:06:26,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-09-24 23:06:26,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:26,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:26,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 286 proven. 61 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:27,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 286 proven. 61 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:27,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269321754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:27,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:27,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 62 [2024-09-24 23:06:27,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095953763] [2024-09-24 23:06:27,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:27,443 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-24 23:06:27,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-24 23:06:27,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=3108, Unknown=0, NotChecked=0, Total=3782 [2024-09-24 23:06:27,444 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 62 states, 62 states have (on average 1.6612903225806452) internal successors, (103), 62 states have internal predecessors, (103), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:28,279 INFO L93 Difference]: Finished difference Result 285 states and 329 transitions. [2024-09-24 23:06:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:28,280 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.6612903225806452) internal successors, (103), 62 states have internal predecessors, (103), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:28,281 INFO L225 Difference]: With dead ends: 285 [2024-09-24 23:06:28,281 INFO L226 Difference]: Without dead ends: 235 [2024-09-24 23:06:28,282 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 212 SyntacticMatches, 28 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2972 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=682, Invalid=3224, Unknown=0, NotChecked=0, Total=3906 [2024-09-24 23:06:28,282 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:28,282 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 532 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:06:28,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-24 23:06:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2024-09-24 23:06:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:28,426 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:28,427 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:28,427 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.6612903225806452) internal successors, (103), 62 states have internal predecessors, (103), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:28,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:28,427 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:28,427 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:28,439 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2024-09-24 23:06:28,628 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,108 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:28,628 INFO L399 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:28,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:28,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2039876023, now seen corresponding path program 70 times [2024-09-24 23:06:28,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:28,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586239404] [2024-09-24 23:06:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:28,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 249 proven. 92 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:29,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:29,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586239404] [2024-09-24 23:06:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586239404] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:29,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546357266] [2024-09-24 23:06:29,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:06:29,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:29,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:29,065 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:29,066 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2024-09-24 23:06:29,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:06:29,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:29,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:29,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 286 proven. 55 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:29,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 286 proven. 55 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:30,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546357266] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:30,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:30,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 61 [2024-09-24 23:06:30,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67292883] [2024-09-24 23:06:30,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:30,114 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-24 23:06:30,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:30,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-24 23:06:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=3017, Unknown=0, NotChecked=0, Total=3660 [2024-09-24 23:06:30,115 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 61 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 61 states have internal predecessors, (102), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:30,967 INFO L93 Difference]: Finished difference Result 291 states and 335 transitions. [2024-09-24 23:06:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:30,967 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 61 states have internal predecessors, (102), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:30,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:30,969 INFO L225 Difference]: With dead ends: 291 [2024-09-24 23:06:30,969 INFO L226 Difference]: Without dead ends: 241 [2024-09-24 23:06:30,969 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 213 SyntacticMatches, 28 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=651, Invalid=3131, Unknown=0, NotChecked=0, Total=3782 [2024-09-24 23:06:30,969 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:30,969 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 415 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:30,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-09-24 23:06:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 150. [2024-09-24 23:06:31,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:31,119 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:31,119 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:31,119 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 61 states have internal predecessors, (102), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:31,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:31,120 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:31,120 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:31,120 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:31,132 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2024-09-24 23:06:31,320 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2024-09-24 23:06:31,321 INFO L399 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:31,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1526774198, now seen corresponding path program 71 times [2024-09-24 23:06:31,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:31,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997612102] [2024-09-24 23:06:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:31,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 249 proven. 88 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:31,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:31,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997612102] [2024-09-24 23:06:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997612102] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:31,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723670915] [2024-09-24 23:06:31,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:06:31,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:31,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:31,721 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:31,722 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2024-09-24 23:06:31,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-09-24 23:06:31,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:31,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:31,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 286 proven. 51 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:32,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 286 proven. 51 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:32,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723670915] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:32,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:32,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 60 [2024-09-24 23:06:32,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939375027] [2024-09-24 23:06:32,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:32,763 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-24 23:06:32,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-24 23:06:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=2924, Unknown=0, NotChecked=0, Total=3540 [2024-09-24 23:06:32,765 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 60 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 60 states have internal predecessors, (101), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:33,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:33,671 INFO L93 Difference]: Finished difference Result 295 states and 339 transitions. [2024-09-24 23:06:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:33,671 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 60 states have internal predecessors, (101), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:33,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:33,673 INFO L225 Difference]: With dead ends: 295 [2024-09-24 23:06:33,673 INFO L226 Difference]: Without dead ends: 245 [2024-09-24 23:06:33,673 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 214 SyntacticMatches, 28 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2677 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=624, Invalid=3036, Unknown=0, NotChecked=0, Total=3660 [2024-09-24 23:06:33,673 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:33,674 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 483 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:33,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-09-24 23:06:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 150. [2024-09-24 23:06:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:33,820 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:33,821 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:33,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 60 states have internal predecessors, (101), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:33,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:33,821 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:33,821 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:33,833 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2024-09-24 23:06:34,022 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2024-09-24 23:06:34,022 INFO L399 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:34,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1953460777, now seen corresponding path program 72 times [2024-09-24 23:06:34,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:34,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502414727] [2024-09-24 23:06:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:34,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 249 proven. 86 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:34,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:34,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502414727] [2024-09-24 23:06:34,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502414727] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:34,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310261997] [2024-09-24 23:06:34,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:06:34,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:34,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:34,416 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:34,417 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2024-09-24 23:06:34,474 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-24 23:06:34,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:34,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:34,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 286 proven. 49 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:35,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 286 proven. 49 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:35,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310261997] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:35,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:35,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 59 [2024-09-24 23:06:35,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276388441] [2024-09-24 23:06:35,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:35,520 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-24 23:06:35,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-24 23:06:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=2829, Unknown=0, NotChecked=0, Total=3422 [2024-09-24 23:06:35,521 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 59 states, 59 states have (on average 1.694915254237288) internal successors, (100), 59 states have internal predecessors, (100), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:36,415 INFO L93 Difference]: Finished difference Result 297 states and 341 transitions. [2024-09-24 23:06:36,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:36,416 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.694915254237288) internal successors, (100), 59 states have internal predecessors, (100), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:36,418 INFO L225 Difference]: With dead ends: 297 [2024-09-24 23:06:36,418 INFO L226 Difference]: Without dead ends: 247 [2024-09-24 23:06:36,418 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 215 SyntacticMatches, 28 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2534 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=601, Invalid=2939, Unknown=0, NotChecked=0, Total=3540 [2024-09-24 23:06:36,418 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:36,418 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 432 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:36,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-24 23:06:36,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 150. [2024-09-24 23:06:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:36,582 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:36,582 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:36,582 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.694915254237288) internal successors, (100), 59 states have internal predecessors, (100), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:36,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:36,582 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:36,583 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:36,595 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2024-09-24 23:06:36,783 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,111 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:36,783 INFO L399 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:36,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:36,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1536504214, now seen corresponding path program 73 times [2024-09-24 23:06:36,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:36,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906617297] [2024-09-24 23:06:36,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:36,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 249 proven. 86 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:37,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:37,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906617297] [2024-09-24 23:06:37,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906617297] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:37,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337521591] [2024-09-24 23:06:37,174 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:06:37,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:37,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:37,175 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:37,176 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2024-09-24 23:06:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:37,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:37,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 286 proven. 49 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:37,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 286 proven. 49 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:38,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337521591] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:38,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:38,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 58 [2024-09-24 23:06:38,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870932744] [2024-09-24 23:06:38,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:38,167 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-24 23:06:38,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:38,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-24 23:06:38,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=2732, Unknown=0, NotChecked=0, Total=3306 [2024-09-24 23:06:38,168 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 58 states, 58 states have (on average 1.706896551724138) internal successors, (99), 58 states have internal predecessors, (99), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:39,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:39,151 INFO L93 Difference]: Finished difference Result 297 states and 341 transitions. [2024-09-24 23:06:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:39,151 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.706896551724138) internal successors, (99), 58 states have internal predecessors, (99), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:39,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:39,153 INFO L225 Difference]: With dead ends: 297 [2024-09-24 23:06:39,153 INFO L226 Difference]: Without dead ends: 247 [2024-09-24 23:06:39,153 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 216 SyntacticMatches, 28 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=582, Invalid=2840, Unknown=0, NotChecked=0, Total=3422 [2024-09-24 23:06:39,154 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:39,154 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 381 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-24 23:06:39,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 150. [2024-09-24 23:06:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:39,304 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:39,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:39,304 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:39,304 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.706896551724138) internal successors, (99), 58 states have internal predecessors, (99), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:39,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:39,305 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:39,305 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:39,317 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2024-09-24 23:06:39,505 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2024-09-24 23:06:39,506 INFO L399 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:39,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:39,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1398957577, now seen corresponding path program 74 times [2024-09-24 23:06:39,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:39,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286457126] [2024-09-24 23:06:39,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:39,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 249 proven. 88 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:39,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:39,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286457126] [2024-09-24 23:06:39,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286457126] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:39,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807320730] [2024-09-24 23:06:39,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:06:39,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:39,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:39,896 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:39,898 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2024-09-24 23:06:39,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:06:39,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:39,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:39,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 286 proven. 51 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:40,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 286 proven. 51 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:40,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807320730] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:40,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 57 [2024-09-24 23:06:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758745612] [2024-09-24 23:06:40,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:40,880 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-24 23:06:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-24 23:06:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=2633, Unknown=0, NotChecked=0, Total=3192 [2024-09-24 23:06:40,881 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 57 states, 57 states have (on average 1.719298245614035) internal successors, (98), 57 states have internal predecessors, (98), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:41,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:41,755 INFO L93 Difference]: Finished difference Result 295 states and 339 transitions. [2024-09-24 23:06:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:41,755 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.719298245614035) internal successors, (98), 57 states have internal predecessors, (98), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:41,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:41,757 INFO L225 Difference]: With dead ends: 295 [2024-09-24 23:06:41,757 INFO L226 Difference]: Without dead ends: 245 [2024-09-24 23:06:41,757 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 217 SyntacticMatches, 28 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2257 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=567, Invalid=2739, Unknown=0, NotChecked=0, Total=3306 [2024-09-24 23:06:41,757 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:41,757 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 303 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-09-24 23:06:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 150. [2024-09-24 23:06:41,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:41,921 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:41,921 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:41,921 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.719298245614035) internal successors, (98), 57 states have internal predecessors, (98), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:41,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:41,922 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:41,922 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:41,922 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:41,934 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2024-09-24 23:06:42,122 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2024-09-24 23:06:42,123 INFO L399 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:42,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1554391414, now seen corresponding path program 75 times [2024-09-24 23:06:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:42,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211303010] [2024-09-24 23:06:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:42,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 249 proven. 92 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:42,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:42,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211303010] [2024-09-24 23:06:42,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211303010] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:42,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817483903] [2024-09-24 23:06:42,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:06:42,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:42,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:42,513 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:42,514 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2024-09-24 23:06:42,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-09-24 23:06:42,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:42,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:42,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 286 proven. 55 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:43,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 286 proven. 55 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:43,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817483903] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:43,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:43,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 56 [2024-09-24 23:06:43,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446772249] [2024-09-24 23:06:43,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:43,484 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-24 23:06:43,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:43,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-24 23:06:43,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=2532, Unknown=0, NotChecked=0, Total=3080 [2024-09-24 23:06:43,484 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 56 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 56 states have internal predecessors, (97), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:44,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:44,341 INFO L93 Difference]: Finished difference Result 291 states and 335 transitions. [2024-09-24 23:06:44,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:44,342 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 56 states have internal predecessors, (97), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:44,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:44,343 INFO L225 Difference]: With dead ends: 291 [2024-09-24 23:06:44,343 INFO L226 Difference]: Without dead ends: 241 [2024-09-24 23:06:44,344 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 218 SyntacticMatches, 28 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=556, Invalid=2636, Unknown=0, NotChecked=0, Total=3192 [2024-09-24 23:06:44,344 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:44,344 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 393 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-09-24 23:06:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 150. [2024-09-24 23:06:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:44,503 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:44,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:44,503 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:44,504 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 56 states have internal predecessors, (97), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:44,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:44,504 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:44,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:44,504 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:44,504 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:44,516 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2024-09-24 23:06:44,705 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2024-09-24 23:06:44,705 INFO L399 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:44,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:44,705 INFO L85 PathProgramCache]: Analyzing trace with hash 264187415, now seen corresponding path program 76 times [2024-09-24 23:06:44,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:44,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635979837] [2024-09-24 23:06:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:44,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 249 proven. 98 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:45,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635979837] [2024-09-24 23:06:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635979837] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321358874] [2024-09-24 23:06:45,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:06:45,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:45,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:45,091 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:45,092 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2024-09-24 23:06:45,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:06:45,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:45,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:45,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 286 proven. 61 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:45,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 286 proven. 61 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:46,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321358874] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:46,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:46,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 55 [2024-09-24 23:06:46,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099221576] [2024-09-24 23:06:46,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:46,085 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-24 23:06:46,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:46,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-24 23:06:46,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=2429, Unknown=0, NotChecked=0, Total=2970 [2024-09-24 23:06:46,086 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 55 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 55 states have internal predecessors, (96), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:46,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:46,875 INFO L93 Difference]: Finished difference Result 285 states and 329 transitions. [2024-09-24 23:06:46,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:46,875 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 55 states have internal predecessors, (96), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:46,877 INFO L225 Difference]: With dead ends: 285 [2024-09-24 23:06:46,877 INFO L226 Difference]: Without dead ends: 235 [2024-09-24 23:06:46,877 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 219 SyntacticMatches, 28 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1992 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=549, Invalid=2531, Unknown=0, NotChecked=0, Total=3080 [2024-09-24 23:06:46,877 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:46,877 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 324 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:46,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-24 23:06:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2024-09-24 23:06:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:47,049 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:47,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:47,049 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:47,049 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 55 states have internal predecessors, (96), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:47,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:47,050 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:47,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:47,050 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:47,050 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:47,061 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2024-09-24 23:06:47,250 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2024-09-24 23:06:47,250 INFO L399 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:47,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1024358058, now seen corresponding path program 77 times [2024-09-24 23:06:47,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:47,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925132210] [2024-09-24 23:06:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:47,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 249 proven. 106 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:47,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:47,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925132210] [2024-09-24 23:06:47,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925132210] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:47,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573927500] [2024-09-24 23:06:47,651 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:06:47,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:47,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:47,652 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:47,653 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2024-09-24 23:06:47,709 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-09-24 23:06:47,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:47,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:47,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 286 proven. 69 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:48,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 286 proven. 69 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:48,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573927500] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:48,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:48,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 54 [2024-09-24 23:06:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950822638] [2024-09-24 23:06:48,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:48,589 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-24 23:06:48,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-24 23:06:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=2324, Unknown=0, NotChecked=0, Total=2862 [2024-09-24 23:06:48,590 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 54 states have internal predecessors, (95), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:49,329 INFO L93 Difference]: Finished difference Result 277 states and 321 transitions. [2024-09-24 23:06:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:49,329 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 54 states have internal predecessors, (95), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:49,332 INFO L225 Difference]: With dead ends: 277 [2024-09-24 23:06:49,332 INFO L226 Difference]: Without dead ends: 227 [2024-09-24 23:06:49,332 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 220 SyntacticMatches, 28 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1864 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=546, Invalid=2424, Unknown=0, NotChecked=0, Total=2970 [2024-09-24 23:06:49,332 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:49,332 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 276 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-24 23:06:49,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 150. [2024-09-24 23:06:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:49,543 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:49,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:49,544 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:49,544 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 54 states have internal predecessors, (95), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:49,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:49,544 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:49,544 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:49,544 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:49,556 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2024-09-24 23:06:49,745 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2024-09-24 23:06:49,745 INFO L399 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:49,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:49,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1065924041, now seen corresponding path program 78 times [2024-09-24 23:06:49,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:49,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880361441] [2024-09-24 23:06:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:49,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 249 proven. 116 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:50,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:50,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880361441] [2024-09-24 23:06:50,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880361441] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:50,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026356577] [2024-09-24 23:06:50,143 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:06:50,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:50,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:50,145 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:50,146 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2024-09-24 23:06:50,203 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-24 23:06:50,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:50,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:50,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 286 proven. 79 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:50,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 286 proven. 79 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:51,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026356577] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:51,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:51,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 53 [2024-09-24 23:06:51,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686131657] [2024-09-24 23:06:51,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:51,060 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-24 23:06:51,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:51,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-24 23:06:51,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=2217, Unknown=0, NotChecked=0, Total=2756 [2024-09-24 23:06:51,061 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 53 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 53 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:51,679 INFO L93 Difference]: Finished difference Result 267 states and 311 transitions. [2024-09-24 23:06:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:51,680 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 53 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:51,681 INFO L225 Difference]: With dead ends: 267 [2024-09-24 23:06:51,681 INFO L226 Difference]: Without dead ends: 217 [2024-09-24 23:06:51,682 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 221 SyntacticMatches, 28 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1739 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=547, Invalid=2315, Unknown=0, NotChecked=0, Total=2862 [2024-09-24 23:06:51,682 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:51,682 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 358 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-24 23:06:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 150. [2024-09-24 23:06:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 118 states have (on average 1.1355932203389831) internal successors, (134), 119 states have internal predecessors, (134), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-09-24 23:06:51,852 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2024-09-24 23:06:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:51,852 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-09-24 23:06:51,852 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 53 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:51,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-09-24 23:06:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:06:51,852 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:51,852 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:51,864 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2024-09-24 23:06:52,053 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,117 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:52,053 INFO L399 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:52,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:52,053 INFO L85 PathProgramCache]: Analyzing trace with hash 179661110, now seen corresponding path program 13 times [2024-09-24 23:06:52,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:52,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673826737] [2024-09-24 23:06:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:52,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-24 23:06:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:06:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:06:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:06:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-24 23:06:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-24 23:06:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:06:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:06:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:06:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:06:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-24 23:06:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:06:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:06:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:52,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:52,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673826737] [2024-09-24 23:06:52,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673826737] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:52,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221712088] [2024-09-24 23:06:52,446 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:06:52,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:52,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:52,447 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:52,448 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2024-09-24 23:06:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:52,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-24 23:06:52,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:53,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:53,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221712088] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:53,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:53,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 52 [2024-09-24 23:06:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484187437] [2024-09-24 23:06:53,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:53,354 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-24 23:06:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-24 23:06:53,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=2108, Unknown=0, NotChecked=0, Total=2652 [2024-09-24 23:06:53,355 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 52 states have internal predecessors, (93), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:53,876 INFO L93 Difference]: Finished difference Result 258 states and 303 transitions. [2024-09-24 23:06:53,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:06:53,877 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 52 states have internal predecessors, (93), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 120 [2024-09-24 23:06:53,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:53,878 INFO L225 Difference]: With dead ends: 258 [2024-09-24 23:06:53,878 INFO L226 Difference]: Without dead ends: 208 [2024-09-24 23:06:53,879 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 222 SyntacticMatches, 28 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=552, Invalid=2204, Unknown=0, NotChecked=0, Total=2756 [2024-09-24 23:06:53,879 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:53,879 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 389 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-24 23:06:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 152. [2024-09-24 23:06:54,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 120 states have (on average 1.1416666666666666) internal successors, (137), 121 states have internal predecessors, (137), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:06:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2024-09-24 23:06:54,036 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 168 transitions. Word has length 120 [2024-09-24 23:06:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:54,036 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 168 transitions. [2024-09-24 23:06:54,036 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 52 states have internal predecessors, (93), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-24 23:06:54,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 168 transitions. [2024-09-24 23:06:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-24 23:06:54,037 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:54,037 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:54,050 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2024-09-24 23:06:54,237 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,118 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:54,238 INFO L399 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:54,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:54,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1632046878, now seen corresponding path program 26 times [2024-09-24 23:06:54,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:54,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603994971] [2024-09-24 23:06:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:54,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:06:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:06:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:06:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:06:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:06:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:06:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:06:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:06:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:06:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:06:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:06:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:06:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:06:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:54,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603994971] [2024-09-24 23:06:54,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603994971] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309904808] [2024-09-24 23:06:54,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:06:54,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:54,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:54,463 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:54,464 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2024-09-24 23:06:54,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:06:54,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:54,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-24 23:06:54,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:54,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-24 23:06:54,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309904808] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:54,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:54,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-24 23:06:54,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431332715] [2024-09-24 23:06:54,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:54,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-24 23:06:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-24 23:06:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-09-24 23:06:54,838 INFO L87 Difference]: Start difference. First operand 152 states and 168 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:06:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:55,145 INFO L93 Difference]: Finished difference Result 165 states and 182 transitions. [2024-09-24 23:06:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-24 23:06:55,146 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 121 [2024-09-24 23:06:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:55,147 INFO L225 Difference]: With dead ends: 165 [2024-09-24 23:06:55,147 INFO L226 Difference]: Without dead ends: 163 [2024-09-24 23:06:55,147 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 251 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-09-24 23:06:55,148 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:55,148 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 317 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:06:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-24 23:06:55,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-09-24 23:06:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 125 states have (on average 1.136) internal successors, (142), 126 states have internal predecessors, (142), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:06:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 175 transitions. [2024-09-24 23:06:55,300 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 175 transitions. Word has length 121 [2024-09-24 23:06:55,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:55,300 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 175 transitions. [2024-09-24 23:06:55,300 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:06:55,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 175 transitions. [2024-09-24 23:06:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:06:55,301 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:55,301 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:55,312 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2024-09-24 23:06:55,501 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2024-09-24 23:06:55,501 INFO L399 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:55,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:55,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1580169674, now seen corresponding path program 27 times [2024-09-24 23:06:55,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:55,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065915477] [2024-09-24 23:06:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:55,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:06:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:06:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:06:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:06:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:06:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:06:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:06:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:06:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:06:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:06:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:06:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:06:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:06:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:06:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:06:55,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:55,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065915477] [2024-09-24 23:06:55,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065915477] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065380018] [2024-09-24 23:06:55,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:06:55,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:55,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:55,962 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:55,963 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2024-09-24 23:06:56,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-24 23:06:56,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:06:56,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:06:56,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:06:56,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:06:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065380018] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:57,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:57,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2024-09-24 23:06:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620774587] [2024-09-24 23:06:57,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:57,235 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-24 23:06:57,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-24 23:06:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=891, Invalid=3801, Unknown=0, NotChecked=0, Total=4692 [2024-09-24 23:06:57,236 INFO L87 Difference]: Start difference. First operand 159 states and 175 transitions. Second operand has 69 states, 69 states have (on average 1.6231884057971016) internal successors, (112), 69 states have internal predecessors, (112), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:06:57,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:06:57,798 INFO L93 Difference]: Finished difference Result 272 states and 319 transitions. [2024-09-24 23:06:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:06:57,799 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.6231884057971016) internal successors, (112), 69 states have internal predecessors, (112), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:06:57,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:06:57,800 INFO L225 Difference]: With dead ends: 272 [2024-09-24 23:06:57,800 INFO L226 Difference]: Without dead ends: 219 [2024-09-24 23:06:57,801 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 223 SyntacticMatches, 30 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3858 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=899, Invalid=3931, Unknown=0, NotChecked=0, Total=4830 [2024-09-24 23:06:57,801 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:06:57,801 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 320 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:06:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-24 23:06:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 160. [2024-09-24 23:06:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:06:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:06:57,982 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:06:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:06:57,982 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:06:57,982 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.6231884057971016) internal successors, (112), 69 states have internal predecessors, (112), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:06:57,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:06:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:06:57,982 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:06:57,983 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:06:57,994 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2024-09-24 23:06:58,183 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2024-09-24 23:06:58,183 INFO L399 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:06:58,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:06:58,183 INFO L85 PathProgramCache]: Analyzing trace with hash -634376267, now seen corresponding path program 79 times [2024-09-24 23:06:58,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:06:58,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338326453] [2024-09-24 23:06:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:06:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:06:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:06:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:06:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:06:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:06:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:06:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:06:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:06:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:06:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:06:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:06:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:06:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:06:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:06:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:06:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:06:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 289 proven. 132 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:06:58,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:06:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338326453] [2024-09-24 23:06:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338326453] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:06:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926672348] [2024-09-24 23:06:58,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:06:58,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:06:58,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:06:58,639 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:06:58,639 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2024-09-24 23:06:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:06:58,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:06:58,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:06:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 329 proven. 92 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:06:59,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:06:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 329 proven. 92 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:06:59,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926672348] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:06:59,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:06:59,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 68 [2024-09-24 23:06:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94979277] [2024-09-24 23:06:59,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:06:59,857 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-24 23:06:59,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:06:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-24 23:06:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=845, Invalid=3711, Unknown=0, NotChecked=0, Total=4556 [2024-09-24 23:06:59,858 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 68 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 68 states have internal predecessors, (111), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:00,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:00,618 INFO L93 Difference]: Finished difference Result 285 states and 332 transitions. [2024-09-24 23:07:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:00,618 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 68 states have internal predecessors, (111), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:00,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:00,620 INFO L225 Difference]: With dead ends: 285 [2024-09-24 23:07:00,620 INFO L226 Difference]: Without dead ends: 232 [2024-09-24 23:07:00,620 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 224 SyntacticMatches, 30 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3747 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=853, Invalid=3839, Unknown=0, NotChecked=0, Total=4692 [2024-09-24 23:07:00,621 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:00,621 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 514 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:00,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-24 23:07:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 160. [2024-09-24 23:07:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:00,810 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:00,810 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:00,810 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 68 states have internal predecessors, (111), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:00,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:00,810 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:00,811 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:00,823 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2024-09-24 23:07:01,011 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,121 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:01,011 INFO L399 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:01,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:01,011 INFO L85 PathProgramCache]: Analyzing trace with hash -326772138, now seen corresponding path program 80 times [2024-09-24 23:07:01,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:01,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997199054] [2024-09-24 23:07:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:01,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 289 proven. 121 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:01,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:01,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997199054] [2024-09-24 23:07:01,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997199054] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:01,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424628779] [2024-09-24 23:07:01,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:07:01,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:01,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:01,465 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:01,466 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2024-09-24 23:07:01,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:07:01,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:01,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:01,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 329 proven. 81 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:02,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 329 proven. 81 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:02,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424628779] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:02,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:02,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 67 [2024-09-24 23:07:02,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327351616] [2024-09-24 23:07:02,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:02,668 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-24 23:07:02,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:02,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-24 23:07:02,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=3619, Unknown=0, NotChecked=0, Total=4422 [2024-09-24 23:07:02,669 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 67 states, 67 states have (on average 1.6417910447761195) internal successors, (110), 67 states have internal predecessors, (110), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:03,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:03,578 INFO L93 Difference]: Finished difference Result 296 states and 343 transitions. [2024-09-24 23:07:03,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:03,578 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.6417910447761195) internal successors, (110), 67 states have internal predecessors, (110), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:03,580 INFO L225 Difference]: With dead ends: 296 [2024-09-24 23:07:03,580 INFO L226 Difference]: Without dead ends: 243 [2024-09-24 23:07:03,580 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 225 SyntacticMatches, 30 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3581 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=811, Invalid=3745, Unknown=0, NotChecked=0, Total=4556 [2024-09-24 23:07:03,580 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:03,581 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 502 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:07:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-24 23:07:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 160. [2024-09-24 23:07:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:03,776 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:03,776 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:03,776 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.6417910447761195) internal successors, (110), 67 states have internal predecessors, (110), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:03,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:03,777 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:03,777 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:03,789 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2024-09-24 23:07:03,977 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,122 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:03,977 INFO L399 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:03,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:03,978 INFO L85 PathProgramCache]: Analyzing trace with hash 930076565, now seen corresponding path program 81 times [2024-09-24 23:07:03,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:03,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937805960] [2024-09-24 23:07:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:03,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 289 proven. 112 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:04,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:04,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937805960] [2024-09-24 23:07:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937805960] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:04,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525946236] [2024-09-24 23:07:04,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:07:04,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:04,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:04,436 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:04,437 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2024-09-24 23:07:04,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-24 23:07:04,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:04,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:04,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 329 proven. 72 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:05,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 329 proven. 72 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:05,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525946236] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:05,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:05,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 66 [2024-09-24 23:07:05,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427521561] [2024-09-24 23:07:05,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:05,644 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-24 23:07:05,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:05,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-24 23:07:05,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=3525, Unknown=0, NotChecked=0, Total=4290 [2024-09-24 23:07:05,645 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 66 states, 66 states have (on average 1.6515151515151516) internal successors, (109), 66 states have internal predecessors, (109), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:06,687 INFO L93 Difference]: Finished difference Result 305 states and 352 transitions. [2024-09-24 23:07:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:06,688 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.6515151515151516) internal successors, (109), 66 states have internal predecessors, (109), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:06,689 INFO L225 Difference]: With dead ends: 305 [2024-09-24 23:07:06,689 INFO L226 Difference]: Without dead ends: 252 [2024-09-24 23:07:06,690 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 226 SyntacticMatches, 30 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3418 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=773, Invalid=3649, Unknown=0, NotChecked=0, Total=4422 [2024-09-24 23:07:06,690 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:06,690 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 447 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:07:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-09-24 23:07:06,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 160. [2024-09-24 23:07:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:06,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:06,899 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:06,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:06,899 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:06,899 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.6515151515151516) internal successors, (109), 66 states have internal predecessors, (109), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:06,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:06,900 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:06,900 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:06,913 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2024-09-24 23:07:07,101 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,123 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:07,101 INFO L399 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:07,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:07,101 INFO L85 PathProgramCache]: Analyzing trace with hash -691947914, now seen corresponding path program 82 times [2024-09-24 23:07:07,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:07,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262679889] [2024-09-24 23:07:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:07,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 289 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:07,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:07,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262679889] [2024-09-24 23:07:07,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262679889] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824257031] [2024-09-24 23:07:07,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:07:07,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:07,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:07,620 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:07,620 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2024-09-24 23:07:07,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:07:07,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:07,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:07,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 329 proven. 65 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:08,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 329 proven. 65 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:08,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824257031] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:08,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:08,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 65 [2024-09-24 23:07:08,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845274913] [2024-09-24 23:07:08,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:08,801 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-24 23:07:08,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:08,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-24 23:07:08,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=731, Invalid=3429, Unknown=0, NotChecked=0, Total=4160 [2024-09-24 23:07:08,802 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 65 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 65 states have internal predecessors, (108), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:09,900 INFO L93 Difference]: Finished difference Result 312 states and 359 transitions. [2024-09-24 23:07:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:09,900 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 65 states have internal predecessors, (108), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:09,902 INFO L225 Difference]: With dead ends: 312 [2024-09-24 23:07:09,902 INFO L226 Difference]: Without dead ends: 259 [2024-09-24 23:07:09,902 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 227 SyntacticMatches, 30 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3258 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=739, Invalid=3551, Unknown=0, NotChecked=0, Total=4290 [2024-09-24 23:07:09,903 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:09,903 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 324 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:09,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-24 23:07:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 160. [2024-09-24 23:07:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:10,103 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:10,103 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:10,103 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 65 states have internal predecessors, (108), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:10,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:10,104 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:10,104 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:10,115 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2024-09-24 23:07:10,304 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,124 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:10,304 INFO L399 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:10,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash 641202037, now seen corresponding path program 83 times [2024-09-24 23:07:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357781123] [2024-09-24 23:07:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 289 proven. 100 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:10,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357781123] [2024-09-24 23:07:10,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357781123] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782819373] [2024-09-24 23:07:10,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:07:10,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:10,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:10,742 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:10,743 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2024-09-24 23:07:10,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-09-24 23:07:10,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:10,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:10,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 329 proven. 60 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:11,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 329 proven. 60 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:11,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782819373] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:11,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:11,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 64 [2024-09-24 23:07:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316230366] [2024-09-24 23:07:11,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:11,920 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-24 23:07:11,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-24 23:07:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=3331, Unknown=0, NotChecked=0, Total=4032 [2024-09-24 23:07:11,921 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 64 states, 64 states have (on average 1.671875) internal successors, (107), 64 states have internal predecessors, (107), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:13,172 INFO L93 Difference]: Finished difference Result 317 states and 364 transitions. [2024-09-24 23:07:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:13,173 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.671875) internal successors, (107), 64 states have internal predecessors, (107), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:13,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:13,175 INFO L225 Difference]: With dead ends: 317 [2024-09-24 23:07:13,175 INFO L226 Difference]: Without dead ends: 264 [2024-09-24 23:07:13,175 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 228 SyntacticMatches, 30 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=709, Invalid=3451, Unknown=0, NotChecked=0, Total=4160 [2024-09-24 23:07:13,175 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:13,175 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 550 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:07:13,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-24 23:07:13,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 160. [2024-09-24 23:07:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:13,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:13,385 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:13,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:13,385 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:13,385 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.671875) internal successors, (107), 64 states have internal predecessors, (107), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:13,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:13,385 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:13,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:13,385 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:13,385 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:13,397 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2024-09-24 23:07:13,586 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2024-09-24 23:07:13,586 INFO L399 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:13,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:13,586 INFO L85 PathProgramCache]: Analyzing trace with hash 545659542, now seen corresponding path program 84 times [2024-09-24 23:07:13,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:13,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638994638] [2024-09-24 23:07:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:13,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 289 proven. 97 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:14,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:14,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638994638] [2024-09-24 23:07:14,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638994638] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:14,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380013697] [2024-09-24 23:07:14,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:07:14,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:14,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:14,141 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:14,142 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2024-09-24 23:07:14,203 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-09-24 23:07:14,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:14,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:14,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 329 proven. 57 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:14,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 329 proven. 57 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:15,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380013697] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:15,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:15,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 63 [2024-09-24 23:07:15,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892905311] [2024-09-24 23:07:15,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:15,275 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-09-24 23:07:15,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:15,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-09-24 23:07:15,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=3231, Unknown=0, NotChecked=0, Total=3906 [2024-09-24 23:07:15,276 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:16,538 INFO L93 Difference]: Finished difference Result 320 states and 367 transitions. [2024-09-24 23:07:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:16,540 INFO L225 Difference]: With dead ends: 320 [2024-09-24 23:07:16,540 INFO L226 Difference]: Without dead ends: 267 [2024-09-24 23:07:16,541 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 229 SyntacticMatches, 30 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2947 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=683, Invalid=3349, Unknown=0, NotChecked=0, Total=4032 [2024-09-24 23:07:16,541 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:16,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 487 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:16,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-24 23:07:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 160. [2024-09-24 23:07:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:16,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:16,744 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:16,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:16,745 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:16,745 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:16,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:16,745 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:16,745 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:16,745 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:16,758 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2024-09-24 23:07:16,946 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2024-09-24 23:07:16,946 INFO L399 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:16,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:16,946 INFO L85 PathProgramCache]: Analyzing trace with hash -565801131, now seen corresponding path program 85 times [2024-09-24 23:07:16,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:16,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686063058] [2024-09-24 23:07:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:16,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 289 proven. 96 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:17,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:17,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686063058] [2024-09-24 23:07:17,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686063058] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:17,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404802224] [2024-09-24 23:07:17,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:07:17,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:17,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:17,385 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:17,386 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2024-09-24 23:07:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:17,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:17,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 329 proven. 56 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:18,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 329 proven. 56 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:18,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404802224] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:18,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:18,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 62 [2024-09-24 23:07:18,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372043123] [2024-09-24 23:07:18,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:18,498 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-24 23:07:18,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:18,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-24 23:07:18,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=3129, Unknown=0, NotChecked=0, Total=3782 [2024-09-24 23:07:18,499 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 62 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 62 states have internal predecessors, (105), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:19,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:19,769 INFO L93 Difference]: Finished difference Result 321 states and 368 transitions. [2024-09-24 23:07:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:19,770 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 62 states have internal predecessors, (105), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:19,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:19,772 INFO L225 Difference]: With dead ends: 321 [2024-09-24 23:07:19,772 INFO L226 Difference]: Without dead ends: 268 [2024-09-24 23:07:19,772 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 230 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2796 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=661, Invalid=3245, Unknown=0, NotChecked=0, Total=3906 [2024-09-24 23:07:19,772 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:19,772 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 330 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-09-24 23:07:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 160. [2024-09-24 23:07:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:19,986 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:19,986 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:19,986 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 62 states have internal predecessors, (105), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:19,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:19,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:19,987 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:19,987 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:19,999 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2024-09-24 23:07:20,187 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,127 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:20,188 INFO L399 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:20,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:20,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1571486026, now seen corresponding path program 86 times [2024-09-24 23:07:20,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:20,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20481301] [2024-09-24 23:07:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:20,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 289 proven. 97 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:20,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:20,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20481301] [2024-09-24 23:07:20,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20481301] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:20,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656369276] [2024-09-24 23:07:20,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:07:20,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:20,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:20,619 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:20,621 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2024-09-24 23:07:20,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:07:20,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:20,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:20,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 329 proven. 57 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:21,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 329 proven. 57 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:21,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656369276] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:21,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:21,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 61 [2024-09-24 23:07:21,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051087208] [2024-09-24 23:07:21,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:21,711 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-24 23:07:21,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:21,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-24 23:07:21,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=3025, Unknown=0, NotChecked=0, Total=3660 [2024-09-24 23:07:21,712 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 61 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 61 states have internal predecessors, (104), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:22,951 INFO L93 Difference]: Finished difference Result 320 states and 367 transitions. [2024-09-24 23:07:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:22,952 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 61 states have internal predecessors, (104), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:22,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:22,954 INFO L225 Difference]: With dead ends: 320 [2024-09-24 23:07:22,954 INFO L226 Difference]: Without dead ends: 267 [2024-09-24 23:07:22,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 231 SyntacticMatches, 30 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=643, Invalid=3139, Unknown=0, NotChecked=0, Total=3782 [2024-09-24 23:07:22,954 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:22,955 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 281 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-24 23:07:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 160. [2024-09-24 23:07:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:23,164 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:23,165 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:23,165 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 61 states have internal predecessors, (104), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:23,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:23,165 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:23,166 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:23,179 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2024-09-24 23:07:23,366 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,128 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:23,366 INFO L399 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:23,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:23,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1859755829, now seen corresponding path program 87 times [2024-09-24 23:07:23,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:23,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790762761] [2024-09-24 23:07:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:23,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 289 proven. 100 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:23,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:23,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790762761] [2024-09-24 23:07:23,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790762761] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:23,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317046683] [2024-09-24 23:07:23,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:07:23,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:23,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:23,803 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:23,804 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2024-09-24 23:07:23,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-24 23:07:23,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:23,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:23,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 329 proven. 60 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:24,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 329 proven. 60 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:24,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317046683] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:24,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:24,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 60 [2024-09-24 23:07:24,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782946141] [2024-09-24 23:07:24,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:24,907 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-24 23:07:24,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:24,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-24 23:07:24,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=2919, Unknown=0, NotChecked=0, Total=3540 [2024-09-24 23:07:24,908 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 60 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 60 states have internal predecessors, (103), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:26,138 INFO L93 Difference]: Finished difference Result 317 states and 364 transitions. [2024-09-24 23:07:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:26,139 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 60 states have internal predecessors, (103), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:26,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:26,141 INFO L225 Difference]: With dead ends: 317 [2024-09-24 23:07:26,141 INFO L226 Difference]: Without dead ends: 264 [2024-09-24 23:07:26,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 232 SyntacticMatches, 30 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2503 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=629, Invalid=3031, Unknown=0, NotChecked=0, Total=3660 [2024-09-24 23:07:26,141 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:26,142 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 444 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-24 23:07:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 160. [2024-09-24 23:07:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:26,352 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:26,352 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:26,352 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 60 states have internal predecessors, (103), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:26,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:26,353 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:26,353 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:26,365 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2024-09-24 23:07:26,553 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2024-09-24 23:07:26,554 INFO L399 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:26,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1831893718, now seen corresponding path program 88 times [2024-09-24 23:07:26,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:26,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558622293] [2024-09-24 23:07:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:26,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 289 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:26,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:26,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558622293] [2024-09-24 23:07:26,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558622293] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:26,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621505423] [2024-09-24 23:07:26,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:07:26,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:26,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:26,999 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:26,999 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2024-09-24 23:07:27,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:07:27,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:27,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:27,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 329 proven. 65 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:27,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 329 proven. 65 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:28,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621505423] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:28,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:28,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 59 [2024-09-24 23:07:28,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310833710] [2024-09-24 23:07:28,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:28,051 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-24 23:07:28,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:28,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-24 23:07:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2811, Unknown=0, NotChecked=0, Total=3422 [2024-09-24 23:07:28,052 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 59 states, 59 states have (on average 1.728813559322034) internal successors, (102), 59 states have internal predecessors, (102), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:29,205 INFO L93 Difference]: Finished difference Result 312 states and 359 transitions. [2024-09-24 23:07:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:29,205 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.728813559322034) internal successors, (102), 59 states have internal predecessors, (102), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:29,207 INFO L225 Difference]: With dead ends: 312 [2024-09-24 23:07:29,207 INFO L226 Difference]: Without dead ends: 259 [2024-09-24 23:07:29,207 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 233 SyntacticMatches, 30 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2361 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=619, Invalid=2921, Unknown=0, NotChecked=0, Total=3540 [2024-09-24 23:07:29,207 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:29,207 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 500 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:29,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-24 23:07:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 160. [2024-09-24 23:07:29,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:29,420 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:29,420 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:29,420 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.728813559322034) internal successors, (102), 59 states have internal predecessors, (102), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:29,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:29,421 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:29,421 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:29,421 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:29,433 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2024-09-24 23:07:29,621 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,130 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:29,622 INFO L399 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:29,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:29,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1632688363, now seen corresponding path program 89 times [2024-09-24 23:07:29,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:29,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874017764] [2024-09-24 23:07:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:29,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 289 proven. 112 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:30,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:30,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874017764] [2024-09-24 23:07:30,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874017764] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:30,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334308090] [2024-09-24 23:07:30,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:07:30,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:30,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:30,062 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:30,063 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2024-09-24 23:07:30,123 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-09-24 23:07:30,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:30,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:30,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 329 proven. 72 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:30,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 329 proven. 72 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:31,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334308090] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:31,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:31,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 58 [2024-09-24 23:07:31,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970789315] [2024-09-24 23:07:31,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:31,110 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-24 23:07:31,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:31,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-24 23:07:31,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=2701, Unknown=0, NotChecked=0, Total=3306 [2024-09-24 23:07:31,111 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 58 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 58 states have internal predecessors, (101), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:32,167 INFO L93 Difference]: Finished difference Result 305 states and 352 transitions. [2024-09-24 23:07:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:32,167 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 58 states have internal predecessors, (101), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:32,169 INFO L225 Difference]: With dead ends: 305 [2024-09-24 23:07:32,169 INFO L226 Difference]: Without dead ends: 252 [2024-09-24 23:07:32,169 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 234 SyntacticMatches, 30 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2222 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=613, Invalid=2809, Unknown=0, NotChecked=0, Total=3422 [2024-09-24 23:07:32,170 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:32,170 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 368 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:32,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-09-24 23:07:32,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 160. [2024-09-24 23:07:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:32,377 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:32,377 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:32,377 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 58 states have internal predecessors, (101), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:32,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:32,378 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:32,378 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:32,390 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2024-09-24 23:07:32,578 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,131 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:32,578 INFO L399 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:32,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:32,579 INFO L85 PathProgramCache]: Analyzing trace with hash -358975754, now seen corresponding path program 90 times [2024-09-24 23:07:32,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:32,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573954013] [2024-09-24 23:07:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:32,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 289 proven. 121 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:33,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:33,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573954013] [2024-09-24 23:07:33,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573954013] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:33,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251520058] [2024-09-24 23:07:33,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:07:33,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:33,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:33,021 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:33,022 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2024-09-24 23:07:33,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-09-24 23:07:33,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:33,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:33,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 329 proven. 81 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:33,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 329 proven. 81 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:34,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251520058] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:34,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:34,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 57 [2024-09-24 23:07:34,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939410425] [2024-09-24 23:07:34,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:34,063 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-24 23:07:34,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:34,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-24 23:07:34,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=2589, Unknown=0, NotChecked=0, Total=3192 [2024-09-24 23:07:34,064 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 57 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:35,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:35,000 INFO L93 Difference]: Finished difference Result 296 states and 343 transitions. [2024-09-24 23:07:35,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:35,001 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 57 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:35,002 INFO L225 Difference]: With dead ends: 296 [2024-09-24 23:07:35,002 INFO L226 Difference]: Without dead ends: 243 [2024-09-24 23:07:35,003 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 235 SyntacticMatches, 30 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2086 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=611, Invalid=2695, Unknown=0, NotChecked=0, Total=3306 [2024-09-24 23:07:35,003 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:35,003 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 354 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-24 23:07:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 160. [2024-09-24 23:07:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:35,221 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:35,221 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:35,221 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 57 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:35,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:35,221 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:35,222 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:35,222 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:35,235 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2024-09-24 23:07:35,422 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,132 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:35,422 INFO L399 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:35,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:35,423 INFO L85 PathProgramCache]: Analyzing trace with hash -872077579, now seen corresponding path program 91 times [2024-09-24 23:07:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:35,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498975237] [2024-09-24 23:07:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:35,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 289 proven. 132 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:35,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:35,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498975237] [2024-09-24 23:07:35,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498975237] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:35,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668072122] [2024-09-24 23:07:35,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:07:35,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:35,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:35,861 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:35,862 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2024-09-24 23:07:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:35,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:35,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 329 proven. 92 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:36,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 329 proven. 92 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668072122] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:36,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:36,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 56 [2024-09-24 23:07:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443471588] [2024-09-24 23:07:36,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:36,880 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-24 23:07:36,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-24 23:07:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=2475, Unknown=0, NotChecked=0, Total=3080 [2024-09-24 23:07:36,882 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 56 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:37,752 INFO L93 Difference]: Finished difference Result 285 states and 332 transitions. [2024-09-24 23:07:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:37,753 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:37,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:37,754 INFO L225 Difference]: With dead ends: 285 [2024-09-24 23:07:37,755 INFO L226 Difference]: Without dead ends: 232 [2024-09-24 23:07:37,755 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 236 SyntacticMatches, 30 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=613, Invalid=2579, Unknown=0, NotChecked=0, Total=3192 [2024-09-24 23:07:37,755 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:37,755 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 364 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-24 23:07:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 160. [2024-09-24 23:07:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 127 states have internal predecessors, (143), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2024-09-24 23:07:37,969 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 128 [2024-09-24 23:07:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:37,969 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2024-09-24 23:07:37,969 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:37,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:37,969 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2024-09-24 23:07:37,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-24 23:07:37,970 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:37,970 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:37,982 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2024-09-24 23:07:38,170 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,133 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:38,170 INFO L399 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:38,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:38,170 INFO L85 PathProgramCache]: Analyzing trace with hash -57345258, now seen corresponding path program 14 times [2024-09-24 23:07:38,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:38,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250687049] [2024-09-24 23:07:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:38,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-24 23:07:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:07:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:07:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-24 23:07:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-24 23:07:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-24 23:07:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:07:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:07:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:07:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:07:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-24 23:07:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-24 23:07:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-24 23:07:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-24 23:07:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:38,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:38,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250687049] [2024-09-24 23:07:38,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250687049] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:38,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262384369] [2024-09-24 23:07:38,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:07:38,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:38,621 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:38,622 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2024-09-24 23:07:38,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:07:38,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:38,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:07:38,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:39,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:39,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262384369] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:39,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:39,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 55 [2024-09-24 23:07:39,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330892137] [2024-09-24 23:07:39,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:39,625 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-24 23:07:39,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:39,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-24 23:07:39,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2359, Unknown=0, NotChecked=0, Total=2970 [2024-09-24 23:07:39,626 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand has 55 states, 55 states have (on average 1.7818181818181817) internal successors, (98), 55 states have internal predecessors, (98), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:40,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:40,316 INFO L93 Difference]: Finished difference Result 275 states and 323 transitions. [2024-09-24 23:07:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-24 23:07:40,317 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7818181818181817) internal successors, (98), 55 states have internal predecessors, (98), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 128 [2024-09-24 23:07:40,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:40,318 INFO L225 Difference]: With dead ends: 275 [2024-09-24 23:07:40,318 INFO L226 Difference]: Without dead ends: 222 [2024-09-24 23:07:40,319 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 237 SyntacticMatches, 30 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=619, Invalid=2461, Unknown=0, NotChecked=0, Total=3080 [2024-09-24 23:07:40,319 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:40,319 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 567 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-09-24 23:07:40,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 162. [2024-09-24 23:07:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.140625) internal successors, (146), 129 states have internal predecessors, (146), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:07:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 179 transitions. [2024-09-24 23:07:40,533 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 179 transitions. Word has length 128 [2024-09-24 23:07:40,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:40,533 INFO L474 AbstractCegarLoop]: Abstraction has 162 states and 179 transitions. [2024-09-24 23:07:40,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7818181818181817) internal successors, (98), 55 states have internal predecessors, (98), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:07:40,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:40,534 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 179 transitions. [2024-09-24 23:07:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-09-24 23:07:40,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:40,534 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:40,546 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2024-09-24 23:07:40,734 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2024-09-24 23:07:40,735 INFO L399 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:40,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1636582049, now seen corresponding path program 28 times [2024-09-24 23:07:40,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:40,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880856299] [2024-09-24 23:07:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:40,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:07:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:07:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:07:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:07:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:07:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:07:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:07:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:07:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:07:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:07:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:07:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:07:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:07:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:07:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:40,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:40,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880856299] [2024-09-24 23:07:40,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880856299] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:40,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728581630] [2024-09-24 23:07:40,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:07:40,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:40,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:40,997 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:40,998 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2024-09-24 23:07:41,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:07:41,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:41,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-24 23:07:41,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:41,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-24 23:07:41,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728581630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:41,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:41,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-09-24 23:07:41,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910624686] [2024-09-24 23:07:41,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:41,406 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-24 23:07:41,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:41,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-24 23:07:41,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-09-24 23:07:41,406 INFO L87 Difference]: Start difference. First operand 162 states and 179 transitions. Second operand has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 21 states have internal predecessors, (66), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:07:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:41,752 INFO L93 Difference]: Finished difference Result 175 states and 193 transitions. [2024-09-24 23:07:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-24 23:07:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 21 states have internal predecessors, (66), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 129 [2024-09-24 23:07:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:41,754 INFO L225 Difference]: With dead ends: 175 [2024-09-24 23:07:41,754 INFO L226 Difference]: Without dead ends: 173 [2024-09-24 23:07:41,754 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 268 SyntacticMatches, 32 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-09-24 23:07:41,754 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 34 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:41,754 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 344 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:07:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-24 23:07:41,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2024-09-24 23:07:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.1353383458646618) internal successors, (151), 134 states have internal predecessors, (151), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:07:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 186 transitions. [2024-09-24 23:07:41,967 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 186 transitions. Word has length 129 [2024-09-24 23:07:41,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:41,967 INFO L474 AbstractCegarLoop]: Abstraction has 169 states and 186 transitions. [2024-09-24 23:07:41,968 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 21 states have internal predecessors, (66), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:07:41,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:41,968 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 186 transitions. [2024-09-24 23:07:41,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-24 23:07:41,968 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:41,968 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:41,981 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2024-09-24 23:07:42,168 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2024-09-24 23:07:42,169 INFO L399 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:42,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:42,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1540394903, now seen corresponding path program 29 times [2024-09-24 23:07:42,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:42,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839829771] [2024-09-24 23:07:42,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:42,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:07:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:07:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:07:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:07:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:07:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:07:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:07:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:07:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:07:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:07:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:07:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:07:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:07:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:07:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:07:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 332 proven. 163 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:42,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:42,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839829771] [2024-09-24 23:07:42,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839829771] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:42,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80031683] [2024-09-24 23:07:42,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:07:42,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:42,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:42,679 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:42,679 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2024-09-24 23:07:42,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-24 23:07:42,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:42,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-24 23:07:42,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:43,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:44,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80031683] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:44,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:44,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 73 [2024-09-24 23:07:44,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093701523] [2024-09-24 23:07:44,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:44,073 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-24 23:07:44,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:44,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-24 23:07:44,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=4259, Unknown=0, NotChecked=0, Total=5256 [2024-09-24 23:07:44,074 INFO L87 Difference]: Start difference. First operand 169 states and 186 transitions. Second operand has 73 states, 73 states have (on average 1.6164383561643836) internal successors, (118), 73 states have internal predecessors, (118), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:07:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:44,805 INFO L93 Difference]: Finished difference Result 289 states and 339 transitions. [2024-09-24 23:07:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-24 23:07:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.6164383561643836) internal successors, (118), 73 states have internal predecessors, (118), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-24 23:07:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:44,808 INFO L225 Difference]: With dead ends: 289 [2024-09-24 23:07:44,808 INFO L226 Difference]: Without dead ends: 233 [2024-09-24 23:07:44,808 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 237 SyntacticMatches, 32 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4364 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1005, Invalid=4397, Unknown=0, NotChecked=0, Total=5402 [2024-09-24 23:07:44,809 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:44,809 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 390 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:44,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-09-24 23:07:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 170. [2024-09-24 23:07:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:07:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-24 23:07:45,062 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-24 23:07:45,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:45,062 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-24 23:07:45,062 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.6164383561643836) internal successors, (118), 73 states have internal predecessors, (118), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:07:45,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-24 23:07:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-24 23:07:45,063 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:45,063 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:45,075 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2024-09-24 23:07:45,263 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2024-09-24 23:07:45,263 INFO L399 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:45,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2140517866, now seen corresponding path program 92 times [2024-09-24 23:07:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:45,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114111711] [2024-09-24 23:07:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:07:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:07:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:07:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:07:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:07:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:07:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:07:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:07:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:07:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:07:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:07:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:07:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:07:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:07:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:07:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 332 proven. 149 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:45,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:45,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114111711] [2024-09-24 23:07:45,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114111711] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:45,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351421458] [2024-09-24 23:07:45,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:07:45,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:45,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:45,768 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:45,768 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2024-09-24 23:07:45,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:07:45,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:45,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-24 23:07:45,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 375 proven. 106 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:46,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 375 proven. 106 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:47,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351421458] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:47,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:47,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 72 [2024-09-24 23:07:47,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386806472] [2024-09-24 23:07:47,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:47,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-24 23:07:47,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:47,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-24 23:07:47,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=4164, Unknown=0, NotChecked=0, Total=5112 [2024-09-24 23:07:47,135 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 72 states, 72 states have (on average 1.625) internal successors, (117), 72 states have internal predecessors, (117), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:07:48,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:48,032 INFO L93 Difference]: Finished difference Result 303 states and 353 transitions. [2024-09-24 23:07:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-24 23:07:48,033 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.625) internal successors, (117), 72 states have internal predecessors, (117), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-24 23:07:48,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:48,035 INFO L225 Difference]: With dead ends: 303 [2024-09-24 23:07:48,035 INFO L226 Difference]: Without dead ends: 247 [2024-09-24 23:07:48,035 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 238 SyntacticMatches, 32 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4246 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=956, Invalid=4300, Unknown=0, NotChecked=0, Total=5256 [2024-09-24 23:07:48,035 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:48,035 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 321 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:07:48,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-24 23:07:48,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 170. [2024-09-24 23:07:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:07:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-24 23:07:48,285 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-24 23:07:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:48,286 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-24 23:07:48,286 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.625) internal successors, (117), 72 states have internal predecessors, (117), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:07:48,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-24 23:07:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-24 23:07:48,286 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:48,286 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:48,298 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2024-09-24 23:07:48,487 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2024-09-24 23:07:48,487 INFO L399 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:48,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:48,487 INFO L85 PathProgramCache]: Analyzing trace with hash 511689655, now seen corresponding path program 93 times [2024-09-24 23:07:48,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:48,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66020133] [2024-09-24 23:07:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:48,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:07:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:07:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:07:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:07:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:07:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:07:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:07:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:07:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:07:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:07:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:07:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:07:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:07:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:07:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:07:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 332 proven. 137 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:49,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:49,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66020133] [2024-09-24 23:07:49,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66020133] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:49,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075056092] [2024-09-24 23:07:49,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:07:49,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:49,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:49,057 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:49,058 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2024-09-24 23:07:49,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-24 23:07:49,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:49,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-24 23:07:49,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 375 proven. 94 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:49,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 375 proven. 94 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:50,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075056092] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:50,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:50,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 71 [2024-09-24 23:07:50,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517223514] [2024-09-24 23:07:50,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:50,395 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-24 23:07:50,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:50,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-24 23:07:50,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=4067, Unknown=0, NotChecked=0, Total=4970 [2024-09-24 23:07:50,396 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 71 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 71 states have internal predecessors, (116), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:07:51,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:51,565 INFO L93 Difference]: Finished difference Result 315 states and 365 transitions. [2024-09-24 23:07:51,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-24 23:07:51,565 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 71 states have internal predecessors, (116), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-24 23:07:51,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:51,567 INFO L225 Difference]: With dead ends: 315 [2024-09-24 23:07:51,567 INFO L226 Difference]: Without dead ends: 259 [2024-09-24 23:07:51,568 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 239 SyntacticMatches, 32 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4069 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=911, Invalid=4201, Unknown=0, NotChecked=0, Total=5112 [2024-09-24 23:07:51,568 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:51,568 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 473 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:07:51,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-24 23:07:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 170. [2024-09-24 23:07:51,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:07:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-24 23:07:51,825 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-24 23:07:51,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:51,825 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-24 23:07:51,825 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 71 states have internal predecessors, (116), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:07:51,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:51,825 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-24 23:07:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-24 23:07:51,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:51,826 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 12, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:51,838 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2024-09-24 23:07:52,026 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,138 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:52,026 INFO L399 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:52,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1896607242, now seen corresponding path program 94 times [2024-09-24 23:07:52,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:52,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488434476] [2024-09-24 23:07:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:52,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:07:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:07:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:07:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:07:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:07:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:07:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:07:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:07:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:07:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:07:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:07:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:07:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:07:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:07:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:07:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 332 proven. 127 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:52,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:52,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488434476] [2024-09-24 23:07:52,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488434476] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:52,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840653448] [2024-09-24 23:07:52,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:07:52,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:52,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:52,524 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:52,525 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2024-09-24 23:07:52,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:07:52,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:52,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-24 23:07:52,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 375 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:53,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 375 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:53,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840653448] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:53,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:53,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 70 [2024-09-24 23:07:53,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252256118] [2024-09-24 23:07:53,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:53,825 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-24 23:07:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:53,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-24 23:07:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=862, Invalid=3968, Unknown=0, NotChecked=0, Total=4830 [2024-09-24 23:07:53,827 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 70 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 70 states have internal predecessors, (115), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:07:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:55,151 INFO L93 Difference]: Finished difference Result 325 states and 375 transitions. [2024-09-24 23:07:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-24 23:07:55,151 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 70 states have internal predecessors, (115), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-24 23:07:55,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:55,153 INFO L225 Difference]: With dead ends: 325 [2024-09-24 23:07:55,153 INFO L226 Difference]: Without dead ends: 269 [2024-09-24 23:07:55,154 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 240 SyntacticMatches, 32 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3895 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=870, Invalid=4100, Unknown=0, NotChecked=0, Total=4970 [2024-09-24 23:07:55,154 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:55,154 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 492 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:07:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-09-24 23:07:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 170. [2024-09-24 23:07:55,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:07:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-24 23:07:55,423 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-24 23:07:55,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:55,423 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-24 23:07:55,423 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 70 states have internal predecessors, (115), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:07:55,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-24 23:07:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-24 23:07:55,423 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:55,424 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 11, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:55,436 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2024-09-24 23:07:55,624 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2024-09-24 23:07:55,624 INFO L399 AbstractCegarLoop]: === Iteration 140 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:55,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash -173178921, now seen corresponding path program 95 times [2024-09-24 23:07:55,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:55,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043776505] [2024-09-24 23:07:55,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:55,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:07:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:07:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:07:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:07:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:07:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:07:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:07:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:07:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:07:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:07:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:07:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:07:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:07:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:07:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:07:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 332 proven. 119 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:56,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:56,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043776505] [2024-09-24 23:07:56,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043776505] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:56,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628275823] [2024-09-24 23:07:56,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-24 23:07:56,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:56,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:56,118 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:56,119 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2024-09-24 23:07:56,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-24 23:07:56,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:56,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-24 23:07:56,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:07:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 375 proven. 76 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:56,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:07:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 375 proven. 76 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:57,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628275823] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:07:57,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:07:57,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 69 [2024-09-24 23:07:57,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595767710] [2024-09-24 23:07:57,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:07:57,402 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-24 23:07:57,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:07:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-24 23:07:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=825, Invalid=3867, Unknown=0, NotChecked=0, Total=4692 [2024-09-24 23:07:57,403 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 69 states, 69 states have (on average 1.6521739130434783) internal successors, (114), 69 states have internal predecessors, (114), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:07:58,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:07:58,892 INFO L93 Difference]: Finished difference Result 333 states and 383 transitions. [2024-09-24 23:07:58,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-24 23:07:58,892 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.6521739130434783) internal successors, (114), 69 states have internal predecessors, (114), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-24 23:07:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:07:58,894 INFO L225 Difference]: With dead ends: 333 [2024-09-24 23:07:58,894 INFO L226 Difference]: Without dead ends: 277 [2024-09-24 23:07:58,894 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 241 SyntacticMatches, 32 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3724 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=833, Invalid=3997, Unknown=0, NotChecked=0, Total=4830 [2024-09-24 23:07:58,895 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:07:58,895 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 559 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:07:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-09-24 23:07:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 170. [2024-09-24 23:07:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:07:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-24 23:07:59,161 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-24 23:07:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:07:59,162 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-24 23:07:59,162 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.6521739130434783) internal successors, (114), 69 states have internal predecessors, (114), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:07:59,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-24 23:07:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-24 23:07:59,162 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:07:59,162 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:07:59,175 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2024-09-24 23:07:59,363 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,140 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:59,363 INFO L399 AbstractCegarLoop]: === Iteration 141 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:07:59,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:07:59,363 INFO L85 PathProgramCache]: Analyzing trace with hash 990794198, now seen corresponding path program 96 times [2024-09-24 23:07:59,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:07:59,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701855369] [2024-09-24 23:07:59,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:07:59,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:07:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:07:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:07:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:07:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:07:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:07:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:07:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:07:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:07:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:07:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:07:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:07:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:07:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:07:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:07:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:07:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:07:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:07:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 332 proven. 113 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:07:59,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:07:59,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701855369] [2024-09-24 23:07:59,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701855369] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:07:59,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270609192] [2024-09-24 23:07:59,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-24 23:07:59,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:07:59,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:07:59,864 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:07:59,865 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2024-09-24 23:07:59,929 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-24 23:07:59,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:07:59,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-24 23:07:59,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:08:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 375 proven. 70 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:00,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:08:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 375 proven. 70 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:01,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270609192] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:08:01,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:08:01,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 68 [2024-09-24 23:08:01,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262673785] [2024-09-24 23:08:01,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:08:01,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-24 23:08:01,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:08:01,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-24 23:08:01,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=3764, Unknown=0, NotChecked=0, Total=4556 [2024-09-24 23:08:01,135 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 68 states, 68 states have (on average 1.661764705882353) internal successors, (113), 68 states have internal predecessors, (113), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:08:02,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:08:02,642 INFO L93 Difference]: Finished difference Result 339 states and 389 transitions. [2024-09-24 23:08:02,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-24 23:08:02,643 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.661764705882353) internal successors, (113), 68 states have internal predecessors, (113), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-24 23:08:02,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:08:02,645 INFO L225 Difference]: With dead ends: 339 [2024-09-24 23:08:02,645 INFO L226 Difference]: Without dead ends: 283 [2024-09-24 23:08:02,645 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 242 SyntacticMatches, 32 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3556 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=800, Invalid=3892, Unknown=0, NotChecked=0, Total=4692 [2024-09-24 23:08:02,645 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:08:02,645 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 342 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:08:02,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-24 23:08:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 170. [2024-09-24 23:08:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:08:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-24 23:08:02,919 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-24 23:08:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:08:02,919 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-24 23:08:02,920 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.661764705882353) internal successors, (113), 68 states have internal predecessors, (113), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:08:02,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:08:02,920 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-24 23:08:02,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-24 23:08:02,920 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:08:02,920 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:08:02,934 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2024-09-24 23:08:03,120 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,141 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:08:03,121 INFO L399 AbstractCegarLoop]: === Iteration 142 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:08:03,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:08:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2136720375, now seen corresponding path program 97 times [2024-09-24 23:08:03,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:08:03,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371354019] [2024-09-24 23:08:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:08:03,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:08:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:08:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:08:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:08:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:08:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:08:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:08:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:08:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:08:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:08:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:08:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:08:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:08:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:08:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:08:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:08:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:08:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 332 proven. 109 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:03,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:08:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371354019] [2024-09-24 23:08:03,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371354019] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:08:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223772284] [2024-09-24 23:08:03,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-24 23:08:03,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:08:03,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:08:03,615 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:08:03,616 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2024-09-24 23:08:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:03,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-24 23:08:03,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:08:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 375 proven. 66 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:04,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:08:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 375 proven. 66 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:04,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223772284] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:08:04,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:08:04,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 67 [2024-09-24 23:08:04,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118228197] [2024-09-24 23:08:04,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:08:04,890 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-24 23:08:04,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:08:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-24 23:08:04,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3659, Unknown=0, NotChecked=0, Total=4422 [2024-09-24 23:08:04,891 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 67 states, 67 states have (on average 1.671641791044776) internal successors, (112), 67 states have internal predecessors, (112), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:08:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:08:06,584 INFO L93 Difference]: Finished difference Result 343 states and 393 transitions. [2024-09-24 23:08:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-24 23:08:06,585 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.671641791044776) internal successors, (112), 67 states have internal predecessors, (112), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-24 23:08:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:08:06,587 INFO L225 Difference]: With dead ends: 343 [2024-09-24 23:08:06,587 INFO L226 Difference]: Without dead ends: 287 [2024-09-24 23:08:06,587 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 243 SyntacticMatches, 32 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3391 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=771, Invalid=3785, Unknown=0, NotChecked=0, Total=4556 [2024-09-24 23:08:06,587 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:08:06,587 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 465 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:08:06,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-09-24 23:08:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 170. [2024-09-24 23:08:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:08:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-24 23:08:06,872 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-24 23:08:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:08:06,872 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-24 23:08:06,872 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.671641791044776) internal successors, (112), 67 states have internal predecessors, (112), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:08:06,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:08:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-24 23:08:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-24 23:08:06,873 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:08:06,873 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:08:06,885 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2024-09-24 23:08:07,073 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,142 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:08:07,074 INFO L399 AbstractCegarLoop]: === Iteration 143 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:08:07,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:08:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 511117750, now seen corresponding path program 98 times [2024-09-24 23:08:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:08:07,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041559282] [2024-09-24 23:08:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:08:07,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:08:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:08:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:08:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:08:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:08:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:08:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:08:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:08:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:08:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:08:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:08:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:08:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:08:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:08:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:08:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:08:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:08:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 332 proven. 107 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:07,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:08:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041559282] [2024-09-24 23:08:07,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041559282] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:08:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977794413] [2024-09-24 23:08:07,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:08:07,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:08:07,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:08:07,573 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:08:07,573 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2024-09-24 23:08:07,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:08:07,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:08:07,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-24 23:08:07,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:08:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 375 proven. 64 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:08,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:08:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 375 proven. 64 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:08,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977794413] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:08:08,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:08:08,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 66 [2024-09-24 23:08:08,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811144020] [2024-09-24 23:08:08,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:08:08,828 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-24 23:08:08,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:08:08,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-24 23:08:08,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=738, Invalid=3552, Unknown=0, NotChecked=0, Total=4290 [2024-09-24 23:08:08,829 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 66 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 66 states have internal predecessors, (111), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:08:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:08:10,586 INFO L93 Difference]: Finished difference Result 345 states and 395 transitions. [2024-09-24 23:08:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-24 23:08:10,586 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 66 states have internal predecessors, (111), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 136 [2024-09-24 23:08:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:08:10,588 INFO L225 Difference]: With dead ends: 345 [2024-09-24 23:08:10,588 INFO L226 Difference]: Without dead ends: 289 [2024-09-24 23:08:10,589 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 244 SyntacticMatches, 32 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=746, Invalid=3676, Unknown=0, NotChecked=0, Total=4422 [2024-09-24 23:08:10,589 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:08:10,589 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 442 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:08:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-09-24 23:08:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 170. [2024-09-24 23:08:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 135 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-24 23:08:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-09-24 23:08:10,864 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 136 [2024-09-24 23:08:10,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:08:10,864 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-09-24 23:08:10,864 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 66 states have internal predecessors, (111), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:08:10,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:08:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-09-24 23:08:10,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-24 23:08:10,865 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:08:10,865 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:08:10,877 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2024-09-24 23:08:11,065 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,143 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:08:11,066 INFO L399 AbstractCegarLoop]: === Iteration 144 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:08:11,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:08:11,066 INFO L85 PathProgramCache]: Analyzing trace with hash -234057705, now seen corresponding path program 99 times [2024-09-24 23:08:11,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:08:11,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155139203] [2024-09-24 23:08:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:08:11,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:08:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:08:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:08:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:08:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:08:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:08:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:08:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:08:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:08:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:08:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:08:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:08:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:08:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:08:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:08:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:08:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:08:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:08:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 332 proven. 107 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:11,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:08:11,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155139203] [2024-09-24 23:08:11,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155139203] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:08:11,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179415812] [2024-09-24 23:08:11,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:08:11,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:08:11,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:08:11,553 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:08:11,553 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2024-09-24 23:08:11,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-24 23:08:11,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:08:11,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-24 23:08:11,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:08:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 375 proven. 64 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:12,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:08:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 375 proven. 64 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-24 23:08:12,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179415812] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:08:12,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:08:12,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 65 [2024-09-24 23:08:12,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012193435] [2024-09-24 23:08:12,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:08:12,795 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-24 23:08:12,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:08:12,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-24 23:08:12,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=717, Invalid=3443, Unknown=0, NotChecked=0, Total=4160 [2024-09-24 23:08:12,795 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 65 states, 65 states have (on average 1.6923076923076923) internal successors, (110), 65 states have internal predecessors, (110), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)