./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3e4caaff40cd418d8c93f0410c37d1e421cc5f90c41578bfaa7bb16ff289f1e --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 19:54:25,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:54:25,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:54:25,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:54:25,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:54:25,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:54:25,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:54:25,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:54:25,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:54:25,416 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:54:25,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:54:25,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:54:25,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:54:25,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:54:25,420 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:54:25,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:54:25,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:54:25,420 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:54:25,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:54:25,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:54:25,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:54:25,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:54:25,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:54:25,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:54:25,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:54:25,425 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:54:25,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:54:25,426 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:54:25,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:54:25,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:54:25,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:54:25,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:54:25,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:54:25,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:54:25,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:54:25,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:54:25,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:54:25,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:54:25,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:54:25,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:54:25,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:54:25,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:54:25,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3e4caaff40cd418d8c93f0410c37d1e421cc5f90c41578bfaa7bb16ff289f1e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:54:25,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:54:25,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:54:25,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:54:25,685 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:54:25,686 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:54:25,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c [2024-09-11 19:54:27,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:54:27,340 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:54:27,341 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c [2024-09-11 19:54:27,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/cf452d5bf/b8b56fd81f3b4dd2b4c263a4e6f6df23/FLAG1a5d08886 [2024-09-11 19:54:27,725 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/cf452d5bf/b8b56fd81f3b4dd2b4c263a4e6f6df23 [2024-09-11 19:54:27,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:54:27,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:54:27,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:54:27,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:54:27,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:54:27,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:27,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e09f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27, skipping insertion in model container [2024-09-11 19:54:27,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:27,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:54:27,910 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c[490,503] [2024-09-11 19:54:27,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:54:27,950 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:54:27,962 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound100.c[490,503] [2024-09-11 19:54:27,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:54:27,995 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:54:27,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27 WrapperNode [2024-09-11 19:54:27,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:54:27,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:54:27,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:54:27,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:54:28,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,032 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2024-09-11 19:54:28,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:54:28,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:54:28,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:54:28,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:54:28,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,046 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,064 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]. [2024-09-11 19:54:28,065 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:54:28,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:54:28,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:54:28,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:54:28,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (1/1) ... [2024-09-11 19:54:28,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:54:28,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:28,113 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) [2024-09-11 19:54:28,122 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 [2024-09-11 19:54:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:54:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-11 19:54:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-11 19:54:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:54:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:54:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:54:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-11 19:54:28,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-11 19:54:28,225 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:54:28,227 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:54:28,362 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-11 19:54:28,363 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:54:28,388 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:54:28,389 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-11 19:54:28,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:54:28 BoogieIcfgContainer [2024-09-11 19:54:28,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:54:28,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:54:28,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:54:28,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:54:28,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:54:27" (1/3) ... [2024-09-11 19:54:28,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ceb70b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:54:28, skipping insertion in model container [2024-09-11 19:54:28,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:54:27" (2/3) ... [2024-09-11 19:54:28,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ceb70b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:54:28, skipping insertion in model container [2024-09-11 19:54:28,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:54:28" (3/3) ... [2024-09-11 19:54:28,400 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound100.c [2024-09-11 19:54:28,413 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:54:28,413 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:54:28,460 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:54:28,465 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;@25e1f3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:54:28,466 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:54:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-11 19:54:28,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-11 19:54:28,479 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:28,480 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:28,480 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:28,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:28,485 INFO L85 PathProgramCache]: Analyzing trace with hash 67099435, now seen corresponding path program 1 times [2024-09-11 19:54:28,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:28,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182292935] [2024-09-11 19:54:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:28,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:28,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:54:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:28,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:54:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:28,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:54:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:28,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-11 19:54:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:54:28,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:28,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182292935] [2024-09-11 19:54:28,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182292935] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:54:28,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:54:28,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:54:28,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077906705] [2024-09-11 19:54:28,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:54:28,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:54:28,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:28,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:54:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:54:28,721 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-11 19:54:28,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:28,763 INFO L93 Difference]: Finished difference Result 62 states and 104 transitions. [2024-09-11 19:54:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:54:28,765 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-11 19:54:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:28,772 INFO L225 Difference]: With dead ends: 62 [2024-09-11 19:54:28,772 INFO L226 Difference]: Without dead ends: 30 [2024-09-11 19:54:28,776 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:54:28,781 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:28,782 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:54:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-11 19:54:28,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-11 19:54:28,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-11 19:54:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2024-09-11 19:54:28,824 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 28 [2024-09-11 19:54:28,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:28,824 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2024-09-11 19:54:28,824 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-11 19:54:28,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-09-11 19:54:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:54:28,828 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:28,828 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:28,829 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:54:28,829 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:28,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:28,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1772608446, now seen corresponding path program 1 times [2024-09-11 19:54:28,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:28,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115395258] [2024-09-11 19:54:28,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:28,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:29,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:54:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:29,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:54:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:29,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:54:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:29,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-11 19:54:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:54:29,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115395258] [2024-09-11 19:54:29,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115395258] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:54:29,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:54:29,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-11 19:54:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168229143] [2024-09-11 19:54:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:54:29,159 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-11 19:54:29,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-11 19:54:29,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:54:29,161 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-11 19:54:29,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:29,276 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-09-11 19:54:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:54:29,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-09-11 19:54:29,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:29,279 INFO L225 Difference]: With dead ends: 49 [2024-09-11 19:54:29,280 INFO L226 Difference]: Without dead ends: 42 [2024-09-11 19:54:29,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:54:29,284 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:29,285 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 116 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:54:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-11 19:54:29,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-09-11 19:54:29,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-11 19:54:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2024-09-11 19:54:29,298 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 29 [2024-09-11 19:54:29,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:29,299 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2024-09-11 19:54:29,299 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-11 19:54:29,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:29,300 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2024-09-11 19:54:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-11 19:54:29,301 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:29,301 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:29,301 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:54:29,302 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:29,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:29,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1072684582, now seen corresponding path program 1 times [2024-09-11 19:54:29,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:29,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940336749] [2024-09-11 19:54:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:29,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:29,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154165974] [2024-09-11 19:54:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:29,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:29,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:29,340 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) [2024-09-11 19:54:29,342 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 19:54:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:29,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-11 19:54:29,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:54:29,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:54:29,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:29,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940336749] [2024-09-11 19:54:29,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:54:29,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154165974] [2024-09-11 19:54:29,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154165974] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:54:29,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:54:29,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:54:29,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731801811] [2024-09-11 19:54:29,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:54:29,558 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:54:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:54:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:54:29,560 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-11 19:54:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:29,622 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2024-09-11 19:54:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:54:29,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2024-09-11 19:54:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:29,625 INFO L225 Difference]: With dead ends: 48 [2024-09-11 19:54:29,626 INFO L226 Difference]: Without dead ends: 46 [2024-09-11 19:54:29,627 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:54:29,628 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:29,628 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 127 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:54:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-11 19:54:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-09-11 19:54:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-11 19:54:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2024-09-11 19:54:29,645 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 32 [2024-09-11 19:54:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:29,646 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2024-09-11 19:54:29,646 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-11 19:54:29,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2024-09-11 19:54:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-11 19:54:29,648 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:29,648 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:29,664 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-11 19:54:29,849 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:29,849 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:29,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash 581538888, now seen corresponding path program 1 times [2024-09-11 19:54:29,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:29,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257024542] [2024-09-11 19:54:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:29,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:29,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:54:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:30,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:54:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:30,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:54:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:30,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-11 19:54:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:54:30,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:30,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257024542] [2024-09-11 19:54:30,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257024542] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:54:30,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040741206] [2024-09-11 19:54:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:30,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:30,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:30,063 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) [2024-09-11 19:54:30,064 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 19:54:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:30,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-11 19:54:30,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:54:30,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:54:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:54:30,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040741206] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:54:30,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:54:30,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-09-11 19:54:30,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769337547] [2024-09-11 19:54:30,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:54:30,272 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:54:30,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:30,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:54:30,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:54:30,273 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-11 19:54:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:30,503 INFO L93 Difference]: Finished difference Result 98 states and 138 transitions. [2024-09-11 19:54:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 19:54:30,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-09-11 19:54:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:30,506 INFO L225 Difference]: With dead ends: 98 [2024-09-11 19:54:30,508 INFO L226 Difference]: Without dead ends: 91 [2024-09-11 19:54:30,509 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:54:30,510 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 57 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:30,510 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 257 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:54:30,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-11 19:54:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2024-09-11 19:54:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 46 states have internal predecessors, (57), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-11 19:54:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2024-09-11 19:54:30,534 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 34 [2024-09-11 19:54:30,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:30,534 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2024-09-11 19:54:30,535 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-11 19:54:30,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2024-09-11 19:54:30,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:54:30,536 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:30,536 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:30,553 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-11 19:54:30,740 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:30,741 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:30,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1534715754, now seen corresponding path program 1 times [2024-09-11 19:54:30,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:30,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437564665] [2024-09-11 19:54:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:30,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:30,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096251804] [2024-09-11 19:54:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:30,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:30,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:30,774 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) [2024-09-11 19:54:30,779 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 19:54:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:30,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-11 19:54:30,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:54:30,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:54:30,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:30,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437564665] [2024-09-11 19:54:30,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:54:30,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096251804] [2024-09-11 19:54:30,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096251804] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:54:30,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:54:30,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:54:30,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094320923] [2024-09-11 19:54:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:54:30,902 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:54:30,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:30,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:54:30,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:54:30,903 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-11 19:54:30,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:30,964 INFO L93 Difference]: Finished difference Result 74 states and 97 transitions. [2024-09-11 19:54:30,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:54:30,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2024-09-11 19:54:30,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:30,967 INFO L225 Difference]: With dead ends: 74 [2024-09-11 19:54:30,967 INFO L226 Difference]: Without dead ends: 72 [2024-09-11 19:54:30,968 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:54:30,969 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:30,970 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 124 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:54:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-11 19:54:30,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2024-09-11 19:54:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.25) internal successors, (60), 49 states have internal predecessors, (60), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-11 19:54:30,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2024-09-11 19:54:30,999 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 37 [2024-09-11 19:54:30,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:31,000 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2024-09-11 19:54:31,000 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-11 19:54:31,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:31,000 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2024-09-11 19:54:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:54:31,001 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:31,001 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:31,017 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 19:54:31,205 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:31,206 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:31,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:31,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1190433772, now seen corresponding path program 1 times [2024-09-11 19:54:31,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:31,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467855111] [2024-09-11 19:54:31,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:31,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:31,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001895755] [2024-09-11 19:54:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:31,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:31,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:31,228 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) [2024-09-11 19:54:31,235 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 19:54:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:31,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-11 19:54:31,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:54:31,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:54:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:54:31,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467855111] [2024-09-11 19:54:31,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:54:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001895755] [2024-09-11 19:54:31,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001895755] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:54:31,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:54:31,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2024-09-11 19:54:31,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112924721] [2024-09-11 19:54:31,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:54:31,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:54:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:31,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:54:31,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:54:31,492 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-11 19:54:31,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:31,711 INFO L93 Difference]: Finished difference Result 106 states and 142 transitions. [2024-09-11 19:54:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:54:31,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2024-09-11 19:54:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:31,713 INFO L225 Difference]: With dead ends: 106 [2024-09-11 19:54:31,713 INFO L226 Difference]: Without dead ends: 104 [2024-09-11 19:54:31,713 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:54:31,714 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 30 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:31,714 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 221 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:54:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-11 19:54:31,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2024-09-11 19:54:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 70 states have internal predecessors, (87), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-11 19:54:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2024-09-11 19:54:31,749 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 37 [2024-09-11 19:54:31,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:31,749 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2024-09-11 19:54:31,749 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-11 19:54:31,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2024-09-11 19:54:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-11 19:54:31,750 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:31,750 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:31,768 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-11 19:54:31,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:31,960 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:31,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1246105370, now seen corresponding path program 1 times [2024-09-11 19:54:31,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:31,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741835270] [2024-09-11 19:54:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:31,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872717954] [2024-09-11 19:54:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:31,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:31,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:31,975 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) [2024-09-11 19:54:31,978 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 19:54:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:32,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:54:32,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:54:32,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:54:32,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:32,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741835270] [2024-09-11 19:54:32,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:54:32,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872717954] [2024-09-11 19:54:32,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872717954] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:54:32,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:54:32,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:54:32,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609585289] [2024-09-11 19:54:32,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:54:32,067 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:54:32,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:54:32,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:54:32,067 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-11 19:54:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:32,141 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2024-09-11 19:54:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:54:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2024-09-11 19:54:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:32,143 INFO L225 Difference]: With dead ends: 146 [2024-09-11 19:54:32,143 INFO L226 Difference]: Without dead ends: 144 [2024-09-11 19:54:32,143 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:54:32,144 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:32,144 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 117 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:54:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-11 19:54:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2024-09-11 19:54:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 87 states have internal predecessors, (111), 45 states have call successors, (45), 6 states have call predecessors, (45), 6 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-11 19:54:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 200 transitions. [2024-09-11 19:54:32,178 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 200 transitions. Word has length 42 [2024-09-11 19:54:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:32,178 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 200 transitions. [2024-09-11 19:54:32,179 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-11 19:54:32,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:32,181 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 200 transitions. [2024-09-11 19:54:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-11 19:54:32,182 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:32,183 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:32,201 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 19:54:32,383 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-11 19:54:32,383 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:32,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:32,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1174265188, now seen corresponding path program 1 times [2024-09-11 19:54:32,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:32,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813696340] [2024-09-11 19:54:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:32,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:32,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629764941] [2024-09-11 19:54:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:32,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:32,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:32,397 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) [2024-09-11 19:54:32,399 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 19:54:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:32,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-11 19:54:32,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:54:32,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:54:32,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:32,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813696340] [2024-09-11 19:54:32,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:54:32,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629764941] [2024-09-11 19:54:32,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629764941] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:54:32,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-11 19:54:32,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-09-11 19:54:32,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525649158] [2024-09-11 19:54:32,632 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-11 19:54:32,632 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-11 19:54:32,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-11 19:54:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:54:32,633 INFO L87 Difference]: Start difference. First operand 138 states and 200 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-11 19:54:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:32,790 INFO L93 Difference]: Finished difference Result 151 states and 211 transitions. [2024-09-11 19:54:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:54:32,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-09-11 19:54:32,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:32,792 INFO L225 Difference]: With dead ends: 151 [2024-09-11 19:54:32,792 INFO L226 Difference]: Without dead ends: 149 [2024-09-11 19:54:32,793 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:54:32,793 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 26 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:32,793 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 200 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:54:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-11 19:54:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2024-09-11 19:54:32,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 93 states have internal predecessors, (117), 45 states have call successors, (45), 8 states have call predecessors, (45), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-11 19:54:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 206 transitions. [2024-09-11 19:54:32,835 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 206 transitions. Word has length 42 [2024-09-11 19:54:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:32,836 INFO L474 AbstractCegarLoop]: Abstraction has 146 states and 206 transitions. [2024-09-11 19:54:32,836 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-11 19:54:32,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 206 transitions. [2024-09-11 19:54:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-11 19:54:32,838 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:32,838 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:32,855 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-11 19:54:33,042 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:33,043 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:33,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:33,043 INFO L85 PathProgramCache]: Analyzing trace with hash -829983206, now seen corresponding path program 2 times [2024-09-11 19:54:33,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:33,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288142477] [2024-09-11 19:54:33,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:33,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:33,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:54:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:33,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:54:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:33,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:54:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:33,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-11 19:54:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:54:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288142477] [2024-09-11 19:54:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288142477] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:54:33,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:54:33,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:54:33,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438355881] [2024-09-11 19:54:33,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:54:33,118 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:54:33,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:33,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:54:33,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:54:33,119 INFO L87 Difference]: Start difference. First operand 146 states and 206 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-11 19:54:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:33,221 INFO L93 Difference]: Finished difference Result 185 states and 258 transitions. [2024-09-11 19:54:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:54:33,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-09-11 19:54:33,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:33,224 INFO L225 Difference]: With dead ends: 185 [2024-09-11 19:54:33,224 INFO L226 Difference]: Without dead ends: 129 [2024-09-11 19:54:33,225 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:54:33,225 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 18 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:33,225 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 155 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:54:33,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-11 19:54:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2024-09-11 19:54:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 76 states have internal predecessors, (91), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-11 19:54:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 164 transitions. [2024-09-11 19:54:33,250 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 164 transitions. Word has length 42 [2024-09-11 19:54:33,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:33,251 INFO L474 AbstractCegarLoop]: Abstraction has 121 states and 164 transitions. [2024-09-11 19:54:33,251 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-11 19:54:33,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:33,251 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 164 transitions. [2024-09-11 19:54:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:54:33,252 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:33,253 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:33,253 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-11 19:54:33,253 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:33,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash 225223382, now seen corresponding path program 1 times [2024-09-11 19:54:33,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:33,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598631171] [2024-09-11 19:54:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:33,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300467058] [2024-09-11 19:54:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:33,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:33,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:33,266 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) [2024-09-11 19:54:33,268 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 19:54:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:33,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:54:33,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:54:33,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:54:33,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:33,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598631171] [2024-09-11 19:54:33,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:54:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300467058] [2024-09-11 19:54:33,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300467058] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:54:33,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:54:33,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:54:33,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976937140] [2024-09-11 19:54:33,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:54:33,353 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:54:33,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:33,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:54:33,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:54:33,353 INFO L87 Difference]: Start difference. First operand 121 states and 164 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-11 19:54:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:33,430 INFO L93 Difference]: Finished difference Result 179 states and 261 transitions. [2024-09-11 19:54:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:54:33,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2024-09-11 19:54:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:33,433 INFO L225 Difference]: With dead ends: 179 [2024-09-11 19:54:33,433 INFO L226 Difference]: Without dead ends: 177 [2024-09-11 19:54:33,434 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:54:33,434 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:33,435 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:54:33,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-09-11 19:54:33,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2024-09-11 19:54:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 86 states have (on average 1.186046511627907) internal successors, (102), 95 states have internal predecessors, (102), 69 states have call successors, (69), 9 states have call predecessors, (69), 9 states have return successors, (68), 60 states have call predecessors, (68), 68 states have call successors, (68) [2024-09-11 19:54:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 239 transitions. [2024-09-11 19:54:33,478 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 239 transitions. Word has length 47 [2024-09-11 19:54:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:33,479 INFO L474 AbstractCegarLoop]: Abstraction has 165 states and 239 transitions. [2024-09-11 19:54:33,479 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-11 19:54:33,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 239 transitions. [2024-09-11 19:54:33,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-11 19:54:33,480 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:33,480 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:33,496 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-11 19:54:33,680 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:33,681 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:33,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash 371933676, now seen corresponding path program 1 times [2024-09-11 19:54:33,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:33,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897986600] [2024-09-11 19:54:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:33,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559940184] [2024-09-11 19:54:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:33,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:33,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:33,704 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) [2024-09-11 19:54:33,706 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 19:54:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:33,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:54:33,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-11 19:54:34,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:54:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-11 19:54:35,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:35,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897986600] [2024-09-11 19:54:35,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:54:35,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559940184] [2024-09-11 19:54:35,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559940184] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:54:35,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:54:35,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-09-11 19:54:35,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123773049] [2024-09-11 19:54:35,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:54:35,593 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 19:54:35,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:35,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 19:54:35,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:54:35,594 INFO L87 Difference]: Start difference. First operand 165 states and 239 transitions. Second operand has 23 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-11 19:54:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:38,898 INFO L93 Difference]: Finished difference Result 444 states and 664 transitions. [2024-09-11 19:54:38,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-11 19:54:38,899 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 59 [2024-09-11 19:54:38,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:38,903 INFO L225 Difference]: With dead ends: 444 [2024-09-11 19:54:38,903 INFO L226 Difference]: Without dead ends: 341 [2024-09-11 19:54:38,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=398, Invalid=1672, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:54:38,906 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 175 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:38,906 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 371 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-11 19:54:38,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-09-11 19:54:39,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 255. [2024-09-11 19:54:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 149 states have (on average 1.2080536912751678) internal successors, (180), 156 states have internal predecessors, (180), 93 states have call successors, (93), 12 states have call predecessors, (93), 12 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-11 19:54:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 365 transitions. [2024-09-11 19:54:39,019 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 365 transitions. Word has length 59 [2024-09-11 19:54:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:39,019 INFO L474 AbstractCegarLoop]: Abstraction has 255 states and 365 transitions. [2024-09-11 19:54:39,019 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-11 19:54:39,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 365 transitions. [2024-09-11 19:54:39,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-11 19:54:39,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:39,021 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:39,036 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-11 19:54:39,224 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:39,225 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:39,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1835197705, now seen corresponding path program 1 times [2024-09-11 19:54:39,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:39,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709884587] [2024-09-11 19:54:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:39,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:39,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019195619] [2024-09-11 19:54:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:39,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:39,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:39,252 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) [2024-09-11 19:54:39,253 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 19:54:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:39,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-11 19:54:39,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-09-11 19:54:39,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:54:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-11 19:54:39,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:39,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709884587] [2024-09-11 19:54:39,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:54:39,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019195619] [2024-09-11 19:54:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019195619] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-11 19:54:39,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 19:54:39,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-11 19:54:39,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899518126] [2024-09-11 19:54:39,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:54:39,456 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:54:39,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:39,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:54:39,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:54:39,457 INFO L87 Difference]: Start difference. First operand 255 states and 365 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-11 19:54:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:39,617 INFO L93 Difference]: Finished difference Result 261 states and 370 transitions. [2024-09-11 19:54:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:54:39,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2024-09-11 19:54:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:39,619 INFO L225 Difference]: With dead ends: 261 [2024-09-11 19:54:39,619 INFO L226 Difference]: Without dead ends: 259 [2024-09-11 19:54:39,620 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:54:39,620 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:39,620 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 120 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:54:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-11 19:54:39,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-09-11 19:54:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 159 states have internal predecessors, (183), 93 states have call successors, (93), 13 states have call predecessors, (93), 13 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-11 19:54:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 368 transitions. [2024-09-11 19:54:39,727 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 368 transitions. Word has length 69 [2024-09-11 19:54:39,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:39,728 INFO L474 AbstractCegarLoop]: Abstraction has 259 states and 368 transitions. [2024-09-11 19:54:39,728 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-11 19:54:39,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 368 transitions. [2024-09-11 19:54:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-11 19:54:39,729 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:39,729 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:39,744 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-11 19:54:39,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-11 19:54:39,934 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:39,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:39,934 INFO L85 PathProgramCache]: Analyzing trace with hash 791958698, now seen corresponding path program 1 times [2024-09-11 19:54:39,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:39,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303283143] [2024-09-11 19:54:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:39,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783765018] [2024-09-11 19:54:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:39,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:39,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:39,954 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) [2024-09-11 19:54:39,956 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-11 19:54:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:40,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-11 19:54:40,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:54:40,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:54:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-09-11 19:54:40,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303283143] [2024-09-11 19:54:40,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:54:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783765018] [2024-09-11 19:54:40,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783765018] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:54:40,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:54:40,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2024-09-11 19:54:40,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113048328] [2024-09-11 19:54:40,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:54:40,718 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-11 19:54:40,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-11 19:54:40,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:54:40,719 INFO L87 Difference]: Start difference. First operand 259 states and 368 transitions. Second operand has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 19 states have internal predecessors, (60), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-11 19:54:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:43,712 INFO L93 Difference]: Finished difference Result 321 states and 458 transitions. [2024-09-11 19:54:43,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:54:43,712 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 19 states have internal predecessors, (60), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 67 [2024-09-11 19:54:43,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:43,715 INFO L225 Difference]: With dead ends: 321 [2024-09-11 19:54:43,715 INFO L226 Difference]: Without dead ends: 319 [2024-09-11 19:54:43,715 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:54:43,716 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 109 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:43,716 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 437 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-11 19:54:43,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-09-11 19:54:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 267. [2024-09-11 19:54:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 158 states have (on average 1.1962025316455696) internal successors, (189), 165 states have internal predecessors, (189), 93 states have call successors, (93), 15 states have call predecessors, (93), 15 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-11 19:54:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 374 transitions. [2024-09-11 19:54:43,832 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 374 transitions. Word has length 67 [2024-09-11 19:54:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:43,833 INFO L474 AbstractCegarLoop]: Abstraction has 267 states and 374 transitions. [2024-09-11 19:54:43,833 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 19 states have internal predecessors, (60), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-11 19:54:43,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 374 transitions. [2024-09-11 19:54:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-11 19:54:43,834 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:43,834 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:43,850 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-11 19:54:44,038 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-11 19:54:44,039 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:44,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:44,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1365578820, now seen corresponding path program 2 times [2024-09-11 19:54:44,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:44,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784747739] [2024-09-11 19:54:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:44,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 19:54:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-11 19:54:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-11 19:54:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-11 19:54:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-11 19:54:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-11 19:54:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-11 19:54:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-11 19:54:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-11 19:54:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-11 19:54:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-09-11 19:54:44,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:44,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784747739] [2024-09-11 19:54:44,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784747739] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:54:44,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:54:44,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:54:44,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328687332] [2024-09-11 19:54:44,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:54:44,160 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:54:44,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:44,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:54:44,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:54:44,161 INFO L87 Difference]: Start difference. First operand 267 states and 374 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-11 19:54:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:44,324 INFO L93 Difference]: Finished difference Result 458 states and 644 transitions. [2024-09-11 19:54:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:54:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 72 [2024-09-11 19:54:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:44,327 INFO L225 Difference]: With dead ends: 458 [2024-09-11 19:54:44,328 INFO L226 Difference]: Without dead ends: 288 [2024-09-11 19:54:44,328 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:54:44,329 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:44,329 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 116 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:54:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-09-11 19:54:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 276. [2024-09-11 19:54:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 167 states have (on average 1.1976047904191616) internal successors, (200), 168 states have internal predecessors, (200), 93 states have call successors, (93), 15 states have call predecessors, (93), 15 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-11 19:54:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 385 transitions. [2024-09-11 19:54:44,447 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 385 transitions. Word has length 72 [2024-09-11 19:54:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:44,447 INFO L474 AbstractCegarLoop]: Abstraction has 276 states and 385 transitions. [2024-09-11 19:54:44,448 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-11 19:54:44,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 385 transitions. [2024-09-11 19:54:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-11 19:54:44,449 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:44,449 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:44,449 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-11 19:54:44,449 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:44,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:44,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1054791738, now seen corresponding path program 3 times [2024-09-11 19:54:44,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:44,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322677300] [2024-09-11 19:54:44,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:44,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:44,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063938377] [2024-09-11 19:54:44,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:54:44,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:44,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:44,466 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) [2024-09-11 19:54:44,470 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-11 19:54:44,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:54:44,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:54:44,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:54:44,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-11 19:54:44,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:54:49,823 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-11 19:54:49,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:54:49,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322677300] [2024-09-11 19:54:49,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:54:49,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063938377] [2024-09-11 19:54:49,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063938377] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:54:49,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:54:49,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2024-09-11 19:54:49,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789540515] [2024-09-11 19:54:49,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:54:49,824 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-11 19:54:49,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:54:49,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-11 19:54:49,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:54:49,825 INFO L87 Difference]: Start difference. First operand 276 states and 385 transitions. Second operand has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-11 19:54:54,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:54:54,090 INFO L93 Difference]: Finished difference Result 413 states and 571 transitions. [2024-09-11 19:54:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-11 19:54:54,090 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 72 [2024-09-11 19:54:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:54:54,092 INFO L225 Difference]: With dead ends: 413 [2024-09-11 19:54:54,092 INFO L226 Difference]: Without dead ends: 411 [2024-09-11 19:54:54,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 19:54:54,094 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 188 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:54:54,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 465 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-11 19:54:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-09-11 19:54:54,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 354. [2024-09-11 19:54:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 216 states have (on average 1.1944444444444444) internal successors, (258), 217 states have internal predecessors, (258), 117 states have call successors, (117), 20 states have call predecessors, (117), 20 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2024-09-11 19:54:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 491 transitions. [2024-09-11 19:54:54,302 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 491 transitions. Word has length 72 [2024-09-11 19:54:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:54:54,303 INFO L474 AbstractCegarLoop]: Abstraction has 354 states and 491 transitions. [2024-09-11 19:54:54,303 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-11 19:54:54,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 491 transitions. [2024-09-11 19:54:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-11 19:54:54,304 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:54:54,304 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:54:54,322 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-11 19:54:54,505 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-11 19:54:54,505 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:54:54,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:54:54,505 INFO L85 PathProgramCache]: Analyzing trace with hash 807741843, now seen corresponding path program 1 times [2024-09-11 19:54:54,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:54:54,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627806483] [2024-09-11 19:54:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:54,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:54:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:54:54,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723246781] [2024-09-11 19:54:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:54:54,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:54:54,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:54:54,532 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) [2024-09-11 19:54:54,534 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-11 19:54:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:54:54,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-11 19:54:54,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:54:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 36 proven. 29 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-09-11 19:54:55,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:55:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-11 19:55:00,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:55:00,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627806483] [2024-09-11 19:55:00,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:55:00,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723246781] [2024-09-11 19:55:00,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723246781] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:55:00,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:55:00,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 35 [2024-09-11 19:55:00,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835433240] [2024-09-11 19:55:00,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:55:00,368 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-11 19:55:00,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:55:00,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-11 19:55:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 19:55:00,370 INFO L87 Difference]: Start difference. First operand 354 states and 491 transitions. Second operand has 35 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 33 states have internal predecessors, (61), 10 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-09-11 19:55:19,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:55:26,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:55:30,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:55:32,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:55:33,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:55:44,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:55:47,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:55:49,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:55:51,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:55:55,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:55:59,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:05,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:11,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:13,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:17,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:21,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:28,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:30,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:31,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:32,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:34,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:38,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:40,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:45,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:49,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:54,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:56:56,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:57:03,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:57:04,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:57:05,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:57:10,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:57:18,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:57:25,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:57:36,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:57:40,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:16,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:18,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:29,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:36,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:38,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:41,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:45,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:47,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:50,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:55,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:58:57,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-11 19:59:01,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]