./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.i --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/loop-invgen/fragtest_simple.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --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 19:22:13,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:22:13,371 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:22:13,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:22:13,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:22:13,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:22:13,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:22:13,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:22:13,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:22:13,405 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:22:13,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:22:13,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:22:13,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:22:13,406 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:22:13,407 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:22:13,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:22:13,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:22:13,408 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:22:13,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:22:13,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:22:13,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:22:13,412 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:22:13,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:22:13,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:22:13,413 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:22:13,413 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:22:13,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:22:13,413 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:22:13,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:22:13,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:22:13,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:22:13,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:22:13,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:22:13,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:22:13,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:22:13,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:22:13,416 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:22:13,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:22:13,416 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:22:13,416 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:22:13,416 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:22:13,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:22:13,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:22:13,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:22:13,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:22:13,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:22:13,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:22:13,634 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:22:13,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-09-11 19:22:14,895 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:22:15,069 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:22:15,070 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-09-11 19:22:15,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/303b1e368/79c45d9637094c619276ed5736107ef1/FLAG4ce57fb39 [2024-09-11 19:22:15,488 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/303b1e368/79c45d9637094c619276ed5736107ef1 [2024-09-11 19:22:15,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:22:15,491 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:22:15,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:22:15,497 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:22:15,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:22:15,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1108656c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15, skipping insertion in model container [2024-09-11 19:22:15,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,516 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:22:15,616 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/loop-invgen/fragtest_simple.i[893,906] [2024-09-11 19:22:15,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:22:15,631 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:22:15,639 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/loop-invgen/fragtest_simple.i[893,906] [2024-09-11 19:22:15,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:22:15,653 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:22:15,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15 WrapperNode [2024-09-11 19:22:15,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:22:15,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:22:15,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:22:15,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:22:15,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,665 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,675 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2024-09-11 19:22:15,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:22:15,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:22:15,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:22:15,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:22:15,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,698 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 19:22:15,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:22:15,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:22:15,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:22:15,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:22:15,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:22:15,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:15,754 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 19:22:15,757 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 19:22:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:22:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:22:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:22:15,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:22:15,866 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:22:15,870 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:22:16,011 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-11 19:22:16,011 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:22:16,040 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:22:16,043 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-11 19:22:16,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:22:16 BoogieIcfgContainer [2024-09-11 19:22:16,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:22:16,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:22:16,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:22:16,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:22:16,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:22:15" (1/3) ... [2024-09-11 19:22:16,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1fc40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:22:16, skipping insertion in model container [2024-09-11 19:22:16,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15" (2/3) ... [2024-09-11 19:22:16,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1fc40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:22:16, skipping insertion in model container [2024-09-11 19:22:16,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:22:16" (3/3) ... [2024-09-11 19:22:16,051 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2024-09-11 19:22:16,063 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:22:16,063 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:22:16,113 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:22:16,119 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;@16d82e90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:22:16,119 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:22:16,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:16,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-11 19:22:16,131 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:16,132 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:16,133 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:16,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash 217789248, now seen corresponding path program 1 times [2024-09-11 19:22:16,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:16,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247913754] [2024-09-11 19:22:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:16,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:16,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247913754] [2024-09-11 19:22:16,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247913754] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:22:16,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:22:16,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:22:16,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219499169] [2024-09-11 19:22:16,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:22:16,261 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:22:16,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:16,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:22:16,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:22:16,277 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:16,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:16,290 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2024-09-11 19:22:16,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:22:16,292 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-11 19:22:16,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:16,296 INFO L225 Difference]: With dead ends: 29 [2024-09-11 19:22:16,296 INFO L226 Difference]: Without dead ends: 14 [2024-09-11 19:22:16,298 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 19:22:16,301 INFO L434 NwaCegarLoop]: 17 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, 17 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 19:22:16,303 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-09-11 19:22:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-09-11 19:22:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2024-09-11 19:22:16,325 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2024-09-11 19:22:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:16,326 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-09-11 19:22:16,326 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:16,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2024-09-11 19:22:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 19:22:16,327 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:16,327 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:16,327 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:22:16,328 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:16,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:16,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1079105914, now seen corresponding path program 1 times [2024-09-11 19:22:16,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:16,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067506201] [2024-09-11 19:22:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:16,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:16,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067506201] [2024-09-11 19:22:16,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067506201] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:22:16,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:22:16,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:22:16,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050112946] [2024-09-11 19:22:16,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:22:16,559 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:22:16,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:16,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:22:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:22:16,560 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:16,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:16,591 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2024-09-11 19:22:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:22:16,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-09-11 19:22:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:16,592 INFO L225 Difference]: With dead ends: 19 [2024-09-11 19:22:16,592 INFO L226 Difference]: Without dead ends: 17 [2024-09-11 19:22:16,593 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:22:16,593 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:16,594 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-11 19:22:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-09-11 19:22:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-09-11 19:22:16,598 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2024-09-11 19:22:16,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:16,599 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-09-11 19:22:16,599 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:16,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-09-11 19:22:16,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-11 19:22:16,600 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:16,600 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:16,600 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:22:16,600 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:16,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:16,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1318207955, now seen corresponding path program 1 times [2024-09-11 19:22:16,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:16,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35496845] [2024-09-11 19:22:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:16,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:16,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:16,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35496845] [2024-09-11 19:22:16,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35496845] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:22:16,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:22:16,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:22:16,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379972387] [2024-09-11 19:22:16,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:22:16,706 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:22:16,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:22:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:22:16,707 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:16,755 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2024-09-11 19:22:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:22:16,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-09-11 19:22:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:16,757 INFO L225 Difference]: With dead ends: 32 [2024-09-11 19:22:16,757 INFO L226 Difference]: Without dead ends: 21 [2024-09-11 19:22:16,758 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 19:22:16,758 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:16,759 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 29 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-11 19:22:16,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2024-09-11 19:22:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:16,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-09-11 19:22:16,768 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 15 [2024-09-11 19:22:16,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:16,768 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-09-11 19:22:16,769 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:16,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:16,769 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-09-11 19:22:16,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-11 19:22:16,770 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:16,770 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:16,770 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-11 19:22:16,770 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:16,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:16,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1219861422, now seen corresponding path program 1 times [2024-09-11 19:22:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:16,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158546712] [2024-09-11 19:22:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:16,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:16,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:16,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158546712] [2024-09-11 19:22:16,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158546712] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:16,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764676149] [2024-09-11 19:22:16,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:16,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:16,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:16,862 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 19:22:16,865 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 19:22:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:16,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 19:22:16,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:17,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764676149] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:17,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:17,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2024-09-11 19:22:17,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264621900] [2024-09-11 19:22:17,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:17,105 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-11 19:22:17,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:17,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-11 19:22:17,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:22:17,108 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:17,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:17,294 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2024-09-11 19:22:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 19:22:17,294 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-09-11 19:22:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:17,295 INFO L225 Difference]: With dead ends: 42 [2024-09-11 19:22:17,295 INFO L226 Difference]: Without dead ends: 31 [2024-09-11 19:22:17,296 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:22:17,297 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:17,297 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 48 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-11 19:22:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2024-09-11 19:22:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-09-11 19:22:17,304 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2024-09-11 19:22:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:17,305 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-09-11 19:22:17,305 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:17,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-09-11 19:22:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:22:17,306 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:17,306 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:17,324 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 19:22:17,510 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:17,511 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:17,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1316760726, now seen corresponding path program 2 times [2024-09-11 19:22:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:17,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478016803] [2024-09-11 19:22:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:17,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:17,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478016803] [2024-09-11 19:22:17,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478016803] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:17,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476379265] [2024-09-11 19:22:17,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:17,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:17,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:17,695 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 19:22:17,700 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 19:22:17,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:17,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:17,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:22:17,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:17,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:17,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476379265] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:17,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:17,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2024-09-11 19:22:17,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233754700] [2024-09-11 19:22:17,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:17,890 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 19:22:17,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:17,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 19:22:17,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:22:17,891 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:18,070 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-09-11 19:22:18,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:22:18,071 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-09-11 19:22:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:18,071 INFO L225 Difference]: With dead ends: 55 [2024-09-11 19:22:18,071 INFO L226 Difference]: Without dead ends: 40 [2024-09-11 19:22:18,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:22:18,073 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:18,073 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 61 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:18,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-11 19:22:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2024-09-11 19:22:18,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-11 19:22:18,078 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 23 [2024-09-11 19:22:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:18,078 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-11 19:22:18,079 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:18,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-11 19:22:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:22:18,080 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:18,080 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:18,095 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:18,283 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:18,284 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:18,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1865733826, now seen corresponding path program 3 times [2024-09-11 19:22:18,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:18,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502576447] [2024-09-11 19:22:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:18,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:18,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:18,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502576447] [2024-09-11 19:22:18,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502576447] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:18,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111282769] [2024-09-11 19:22:18,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:18,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:18,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:18,407 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 19:22:18,408 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 19:22:18,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:22:18,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:18,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-11 19:22:18,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:18,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:18,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111282769] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:18,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:18,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-09-11 19:22:18,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888052734] [2024-09-11 19:22:18,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:18,639 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 19:22:18,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:18,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 19:22:18,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:22:18,640 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:18,724 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2024-09-11 19:22:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:22:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-09-11 19:22:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:18,725 INFO L225 Difference]: With dead ends: 63 [2024-09-11 19:22:18,725 INFO L226 Difference]: Without dead ends: 44 [2024-09-11 19:22:18,725 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:22:18,725 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:18,726 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 88 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-11 19:22:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2024-09-11 19:22:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-11 19:22:18,730 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2024-09-11 19:22:18,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:18,730 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-11 19:22:18,731 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:18,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-11 19:22:18,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:22:18,731 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:18,731 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:18,743 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 19:22:18,934 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-11 19:22:18,935 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:18,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1202542631, now seen corresponding path program 4 times [2024-09-11 19:22:18,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:18,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126231374] [2024-09-11 19:22:18,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:18,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:19,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126231374] [2024-09-11 19:22:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126231374] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:19,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619319014] [2024-09-11 19:22:19,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:19,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:19,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:19,019 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 19:22:19,022 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 19:22:19,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:19,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:19,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-11 19:22:19,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619319014] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:19,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:19,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-11 19:22:19,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465794724] [2024-09-11 19:22:19,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:19,171 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:22:19,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:19,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:22:19,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:22:19,172 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:19,223 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-09-11 19:22:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-11 19:22:19,223 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-09-11 19:22:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:19,224 INFO L225 Difference]: With dead ends: 49 [2024-09-11 19:22:19,224 INFO L226 Difference]: Without dead ends: 47 [2024-09-11 19:22:19,224 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:22:19,225 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:19,225 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 63 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:19,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-11 19:22:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-11 19:22:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2024-09-11 19:22:19,229 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 31 [2024-09-11 19:22:19,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:19,230 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2024-09-11 19:22:19,230 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:19,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2024-09-11 19:22:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:22:19,231 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:19,231 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:19,242 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 19:22:19,435 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:19,436 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:19,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash 286167821, now seen corresponding path program 5 times [2024-09-11 19:22:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:19,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705008632] [2024-09-11 19:22:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:19,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705008632] [2024-09-11 19:22:19,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705008632] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:19,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8337352] [2024-09-11 19:22:19,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:19,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:19,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:19,568 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 19:22:19,570 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 19:22:19,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-11 19:22:19,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:19,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:22:19,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8337352] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:19,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:19,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-09-11 19:22:19,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405210094] [2024-09-11 19:22:19,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:19,947 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 19:22:19,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:19,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 19:22:19,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:22:19,949 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:20,132 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2024-09-11 19:22:20,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:22:20,132 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-09-11 19:22:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:20,133 INFO L225 Difference]: With dead ends: 108 [2024-09-11 19:22:20,133 INFO L226 Difference]: Without dead ends: 62 [2024-09-11 19:22:20,133 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:22:20,134 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 52 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:20,134 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 111 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-11 19:22:20,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2024-09-11 19:22:20,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2024-09-11 19:22:20,139 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 39 [2024-09-11 19:22:20,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:20,139 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2024-09-11 19:22:20,140 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:20,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2024-09-11 19:22:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:22:20,140 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:20,140 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:20,152 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:20,344 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-11 19:22:20,345 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:20,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:20,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1270551529, now seen corresponding path program 6 times [2024-09-11 19:22:20,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:20,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203838343] [2024-09-11 19:22:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:20,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:20,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:20,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203838343] [2024-09-11 19:22:20,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203838343] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:20,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658453754] [2024-09-11 19:22:20,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:22:20,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:20,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:20,476 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 19:22:20,477 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 19:22:20,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-11 19:22:20,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:20,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:22:20,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 42 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:20,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 42 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:20,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658453754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:20,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:20,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-11 19:22:20,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891867503] [2024-09-11 19:22:20,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:20,646 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 19:22:20,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:20,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 19:22:20,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:22:20,647 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:20,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:20,719 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2024-09-11 19:22:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-11 19:22:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-09-11 19:22:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:20,720 INFO L225 Difference]: With dead ends: 61 [2024-09-11 19:22:20,720 INFO L226 Difference]: Without dead ends: 59 [2024-09-11 19:22:20,720 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 76 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:22:20,720 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:20,721 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 87 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-11 19:22:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2024-09-11 19:22:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-09-11 19:22:20,726 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 43 [2024-09-11 19:22:20,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:20,726 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-09-11 19:22:20,726 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:20,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:20,726 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-09-11 19:22:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-11 19:22:20,727 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:20,727 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:20,739 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 19:22:20,927 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:20,928 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:20,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:20,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1116419837, now seen corresponding path program 7 times [2024-09-11 19:22:20,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:20,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416821852] [2024-09-11 19:22:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 80 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:21,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:21,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416821852] [2024-09-11 19:22:21,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416821852] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:21,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995747442] [2024-09-11 19:22:21,119 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:22:21,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:21,121 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 19:22:21,123 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 19:22:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:21,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:22:21,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 96 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:22:21,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 96 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:22:21,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995747442] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:21,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:21,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 26 [2024-09-11 19:22:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460991742] [2024-09-11 19:22:21,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:21,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-11 19:22:21,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:21,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-11 19:22:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:22:21,490 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:21,625 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2024-09-11 19:22:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-11 19:22:21,626 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-09-11 19:22:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:21,626 INFO L225 Difference]: With dead ends: 108 [2024-09-11 19:22:21,627 INFO L226 Difference]: Without dead ends: 75 [2024-09-11 19:22:21,627 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 81 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:22:21,628 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:21,628 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 129 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-11 19:22:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2024-09-11 19:22:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2024-09-11 19:22:21,634 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 51 [2024-09-11 19:22:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:21,635 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2024-09-11 19:22:21,635 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:21,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2024-09-11 19:22:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-11 19:22:21,636 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:21,636 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:21,648 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 19:22:21,839 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 19:22:21,840 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:21,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash 885943970, now seen corresponding path program 8 times [2024-09-11 19:22:21,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:21,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303178207] [2024-09-11 19:22:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:21,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 80 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303178207] [2024-09-11 19:22:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303178207] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507299985] [2024-09-11 19:22:22,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:22,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:22,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:22,165 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 19:22:22,166 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 19:22:22,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:22,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:22,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:22:22,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 56 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:22,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 56 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:22,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507299985] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:22,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:22,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 10] total 27 [2024-09-11 19:22:22,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559651471] [2024-09-11 19:22:22,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:22,603 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-11 19:22:22,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:22,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-11 19:22:22,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2024-09-11 19:22:22,604 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:23,081 INFO L93 Difference]: Finished difference Result 120 states and 141 transitions. [2024-09-11 19:22:23,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-11 19:22:23,081 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-09-11 19:22:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:23,082 INFO L225 Difference]: With dead ends: 120 [2024-09-11 19:22:23,082 INFO L226 Difference]: Without dead ends: 85 [2024-09-11 19:22:23,083 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 89 SyntacticMatches, 16 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=750, Invalid=3410, Unknown=0, NotChecked=0, Total=4160 [2024-09-11 19:22:23,084 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 86 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:23,084 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 94 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:23,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-11 19:22:23,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2024-09-11 19:22:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-09-11 19:22:23,089 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 53 [2024-09-11 19:22:23,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:23,090 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-09-11 19:22:23,090 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:23,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:23,090 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-09-11 19:22:23,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-11 19:22:23,091 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:23,091 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:23,102 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:23,291 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 19:22:23,292 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:23,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1058166982, now seen corresponding path program 9 times [2024-09-11 19:22:23,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:23,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380340349] [2024-09-11 19:22:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:23,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380340349] [2024-09-11 19:22:23,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380340349] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237008571] [2024-09-11 19:22:23,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:23,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:23,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:23,504 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 19:22:23,508 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 19:22:23,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-11 19:22:23,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:23,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:22:23,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 128 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:23,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 128 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:23,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237008571] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:23,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:23,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2024-09-11 19:22:23,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778272143] [2024-09-11 19:22:23,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:23,952 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-11 19:22:23,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:23,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-11 19:22:23,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2024-09-11 19:22:23,953 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:24,146 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2024-09-11 19:22:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-11 19:22:24,146 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-09-11 19:22:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:24,147 INFO L225 Difference]: With dead ends: 128 [2024-09-11 19:22:24,147 INFO L226 Difference]: Without dead ends: 89 [2024-09-11 19:22:24,147 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 91 SyntacticMatches, 16 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=1155, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:22:24,147 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 64 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:24,148 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 184 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-11 19:22:24,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 62. [2024-09-11 19:22:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-09-11 19:22:24,153 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 59 [2024-09-11 19:22:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:24,153 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-09-11 19:22:24,154 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:24,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-09-11 19:22:24,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-11 19:22:24,154 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:24,154 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:24,166 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-11 19:22:24,358 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 19:22:24,359 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:24,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:24,359 INFO L85 PathProgramCache]: Analyzing trace with hash 69560799, now seen corresponding path program 10 times [2024-09-11 19:22:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:24,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728408013] [2024-09-11 19:22:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:24,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 72 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:24,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:24,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728408013] [2024-09-11 19:22:24,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728408013] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:24,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804582949] [2024-09-11 19:22:24,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:24,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:24,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:24,541 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 19:22:24,541 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 19:22:24,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:24,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:24,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-11 19:22:24,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 90 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:24,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 90 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804582949] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:24,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:24,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-11 19:22:24,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394505569] [2024-09-11 19:22:24,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:24,790 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 19:22:24,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 19:22:24,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:22:24,791 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:24,905 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2024-09-11 19:22:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-11 19:22:24,905 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-09-11 19:22:24,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:24,906 INFO L225 Difference]: With dead ends: 79 [2024-09-11 19:22:24,906 INFO L226 Difference]: Without dead ends: 77 [2024-09-11 19:22:24,906 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 108 SyntacticMatches, 18 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=413, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:22:24,907 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:24,907 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 103 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-11 19:22:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2024-09-11 19:22:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2024-09-11 19:22:24,912 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 61 [2024-09-11 19:22:24,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:24,913 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2024-09-11 19:22:24,913 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:24,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2024-09-11 19:22:24,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-11 19:22:24,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:24,914 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:24,929 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:25,114 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 19:22:25,114 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:25,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:25,115 INFO L85 PathProgramCache]: Analyzing trace with hash -233476923, now seen corresponding path program 11 times [2024-09-11 19:22:25,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:25,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661110171] [2024-09-11 19:22:25,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:25,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 173 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:25,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:25,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661110171] [2024-09-11 19:22:25,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661110171] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:25,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947452445] [2024-09-11 19:22:25,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:25,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:25,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:25,367 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 19:22:25,370 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 19:22:25,442 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-09-11 19:22:25,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:25,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-11 19:22:25,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 200 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:25,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 200 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:25,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947452445] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:25,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:25,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 38 [2024-09-11 19:22:25,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796452131] [2024-09-11 19:22:25,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:25,936 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-11 19:22:25,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-11 19:22:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=1066, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:22:25,937 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:26,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:26,260 INFO L93 Difference]: Finished difference Result 193 states and 220 transitions. [2024-09-11 19:22:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-11 19:22:26,260 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-09-11 19:22:26,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:26,261 INFO L225 Difference]: With dead ends: 193 [2024-09-11 19:22:26,261 INFO L226 Difference]: Without dead ends: 107 [2024-09-11 19:22:26,262 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 106 SyntacticMatches, 17 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=856, Invalid=2566, Unknown=0, NotChecked=0, Total=3422 [2024-09-11 19:22:26,262 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 99 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:26,262 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 256 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:26,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-11 19:22:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 74. [2024-09-11 19:22:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-09-11 19:22:26,268 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 69 [2024-09-11 19:22:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:26,268 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-09-11 19:22:26,268 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:26,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-09-11 19:22:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-11 19:22:26,269 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:26,269 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:26,281 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 19:22:26,469 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-11 19:22:26,470 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:26,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1367464015, now seen corresponding path program 12 times [2024-09-11 19:22:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:26,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718984927] [2024-09-11 19:22:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:26,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 110 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:26,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:26,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718984927] [2024-09-11 19:22:26,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718984927] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:26,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622620178] [2024-09-11 19:22:26,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:22:26,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:26,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:26,674 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 19:22:26,678 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 19:22:26,746 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-11 19:22:26,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:26,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-11 19:22:26,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 132 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:26,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 132 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:26,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622620178] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:26,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:26,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-11 19:22:26,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561572375] [2024-09-11 19:22:26,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:26,983 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-11 19:22:26,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:26,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-11 19:22:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:22:26,983 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 17 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:27,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:27,100 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2024-09-11 19:22:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-11 19:22:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 17 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-09-11 19:22:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:27,101 INFO L225 Difference]: With dead ends: 91 [2024-09-11 19:22:27,101 INFO L226 Difference]: Without dead ends: 89 [2024-09-11 19:22:27,101 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 130 SyntacticMatches, 22 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=552, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:22:27,102 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:27,102 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 119 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:27,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-11 19:22:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2024-09-11 19:22:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 81 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2024-09-11 19:22:27,107 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 73 [2024-09-11 19:22:27,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:27,108 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2024-09-11 19:22:27,108 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 17 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:27,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:27,108 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2024-09-11 19:22:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-11 19:22:27,108 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:27,108 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:27,120 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-11 19:22:27,309 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-11 19:22:27,309 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:27,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1762945845, now seen corresponding path program 13 times [2024-09-11 19:22:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802951785] [2024-09-11 19:22:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:27,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 255 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:27,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:27,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802951785] [2024-09-11 19:22:27,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802951785] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:27,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944558816] [2024-09-11 19:22:27,644 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:22:27,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:27,647 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:27,648 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-11 19:22:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:27,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-11 19:22:27,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 286 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:22:28,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 286 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:22:28,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944558816] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:28,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:28,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 41 [2024-09-11 19:22:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166473155] [2024-09-11 19:22:28,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:28,376 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-11 19:22:28,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:28,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-11 19:22:28,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 19:22:28,377 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 41 states, 41 states have (on average 3.341463414634146) internal successors, (137), 41 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:28,643 INFO L93 Difference]: Finished difference Result 173 states and 201 transitions. [2024-09-11 19:22:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-11 19:22:28,643 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.341463414634146) internal successors, (137), 41 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-09-11 19:22:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:28,644 INFO L225 Difference]: With dead ends: 173 [2024-09-11 19:22:28,644 INFO L226 Difference]: Without dead ends: 120 [2024-09-11 19:22:28,645 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 126 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=695, Invalid=2061, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 19:22:28,646 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 79 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:28,646 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 278 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-11 19:22:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 84. [2024-09-11 19:22:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 83 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2024-09-11 19:22:28,652 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 81 [2024-09-11 19:22:28,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:28,653 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2024-09-11 19:22:28,653 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.341463414634146) internal successors, (137), 41 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:28,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2024-09-11 19:22:28,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-09-11 19:22:28,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:28,653 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:28,666 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-11 19:22:28,854 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-11 19:22:28,854 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:28,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1054444518, now seen corresponding path program 14 times [2024-09-11 19:22:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:28,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146228942] [2024-09-11 19:22:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:28,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 255 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:29,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:29,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146228942] [2024-09-11 19:22:29,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146228942] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:29,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676451633] [2024-09-11 19:22:29,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:29,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:29,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:29,225 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:29,227 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-11 19:22:29,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:29,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:29,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-11 19:22:29,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 156 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:29,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 156 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:30,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676451633] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:30,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:30,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 15, 15] total 42 [2024-09-11 19:22:30,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38162070] [2024-09-11 19:22:30,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:30,012 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 19:22:30,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:30,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 19:22:30,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1419, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:22:30,014 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 42 states, 42 states have (on average 3.9285714285714284) internal successors, (165), 42 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:31,000 INFO L93 Difference]: Finished difference Result 185 states and 216 transitions. [2024-09-11 19:22:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-09-11 19:22:31,000 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.9285714285714284) internal successors, (165), 42 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-09-11 19:22:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:31,001 INFO L225 Difference]: With dead ends: 185 [2024-09-11 19:22:31,001 INFO L226 Difference]: Without dead ends: 130 [2024-09-11 19:22:31,004 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 139 SyntacticMatches, 26 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4126 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1840, Invalid=9080, Unknown=0, NotChecked=0, Total=10920 [2024-09-11 19:22:31,004 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 243 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:31,004 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 218 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:22:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-11 19:22:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 90. [2024-09-11 19:22:31,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 89 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2024-09-11 19:22:31,011 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 83 [2024-09-11 19:22:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:31,011 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2024-09-11 19:22:31,011 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.9285714285714284) internal successors, (165), 42 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:31,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2024-09-11 19:22:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-09-11 19:22:31,012 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:31,012 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:31,024 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:31,216 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-11 19:22:31,217 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:31,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:31,217 INFO L85 PathProgramCache]: Analyzing trace with hash 831721970, now seen corresponding path program 15 times [2024-09-11 19:22:31,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:31,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5001515] [2024-09-11 19:22:31,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:31,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 302 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:31,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5001515] [2024-09-11 19:22:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5001515] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349396187] [2024-09-11 19:22:31,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:31,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:31,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:31,653 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:31,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-11 19:22:31,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-09-11 19:22:31,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:31,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 19:22:31,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 338 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:32,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 338 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349396187] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:32,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:32,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2024-09-11 19:22:32,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128321126] [2024-09-11 19:22:32,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:32,432 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-11 19:22:32,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:32,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-11 19:22:32,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1587, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:22:32,433 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:32,743 INFO L93 Difference]: Finished difference Result 193 states and 225 transitions. [2024-09-11 19:22:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-11 19:22:32,744 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-09-11 19:22:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:32,745 INFO L225 Difference]: With dead ends: 193 [2024-09-11 19:22:32,745 INFO L226 Difference]: Without dead ends: 134 [2024-09-11 19:22:32,746 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 136 SyntacticMatches, 26 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2024-09-11 19:22:32,746 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 110 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:32,746 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 272 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-09-11 19:22:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2024-09-11 19:22:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.043956043956044) internal successors, (95), 91 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:32,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2024-09-11 19:22:32,753 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 89 [2024-09-11 19:22:32,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:32,753 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2024-09-11 19:22:32,754 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:32,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2024-09-11 19:22:32,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-11 19:22:32,754 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:32,754 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:32,766 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-11 19:22:32,955 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-11 19:22:32,955 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:32,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:32,955 INFO L85 PathProgramCache]: Analyzing trace with hash 475293143, now seen corresponding path program 16 times [2024-09-11 19:22:32,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:32,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302285693] [2024-09-11 19:22:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:32,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 182 proven. 366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:33,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:33,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302285693] [2024-09-11 19:22:33,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302285693] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:33,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606021238] [2024-09-11 19:22:33,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:33,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:33,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:33,241 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:33,243 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-11 19:22:33,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:33,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:33,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 19:22:33,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 210 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:33,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 210 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:33,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606021238] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:33,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:33,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-11 19:22:33,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569033188] [2024-09-11 19:22:33,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:33,622 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-11 19:22:33,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-11 19:22:33,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=258, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:22:33,623 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:33,782 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2024-09-11 19:22:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-11 19:22:33,783 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-09-11 19:22:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:33,784 INFO L225 Difference]: With dead ends: 109 [2024-09-11 19:22:33,784 INFO L226 Difference]: Without dead ends: 107 [2024-09-11 19:22:33,784 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 164 SyntacticMatches, 27 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=462, Invalid=798, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:22:33,784 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:33,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 161 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:33,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-11 19:22:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2024-09-11 19:22:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 99 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2024-09-11 19:22:33,807 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 91 [2024-09-11 19:22:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:33,807 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2024-09-11 19:22:33,807 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:33,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2024-09-11 19:22:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-11 19:22:33,810 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:33,810 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:33,822 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-11 19:22:34,013 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:34,013 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:34,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1218121539, now seen corresponding path program 17 times [2024-09-11 19:22:34,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:34,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273865261] [2024-09-11 19:22:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:34,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 408 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:34,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273865261] [2024-09-11 19:22:34,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273865261] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061629535] [2024-09-11 19:22:34,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:34,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:34,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:34,475 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:34,476 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-11 19:22:34,564 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-11 19:22:34,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:34,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-11 19:22:34,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 450 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:35,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 450 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:35,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061629535] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:35,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:35,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 53 [2024-09-11 19:22:35,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229114629] [2024-09-11 19:22:35,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:35,439 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-11 19:22:35,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-11 19:22:35,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=650, Invalid=2106, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 19:22:35,440 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 53 states, 53 states have (on average 3.3207547169811322) internal successors, (176), 53 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:36,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:36,014 INFO L93 Difference]: Finished difference Result 278 states and 315 transitions. [2024-09-11 19:22:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-11 19:22:36,014 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.3207547169811322) internal successors, (176), 53 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-09-11 19:22:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:36,015 INFO L225 Difference]: With dead ends: 278 [2024-09-11 19:22:36,015 INFO L226 Difference]: Without dead ends: 152 [2024-09-11 19:22:36,017 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 151 SyntacticMatches, 27 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1721, Invalid=5251, Unknown=0, NotChecked=0, Total=6972 [2024-09-11 19:22:36,018 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 166 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:36,018 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 461 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:22:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-11 19:22:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 104. [2024-09-11 19:22:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:36,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2024-09-11 19:22:36,026 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 99 [2024-09-11 19:22:36,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:36,026 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2024-09-11 19:22:36,027 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.3207547169811322) internal successors, (176), 53 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:36,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2024-09-11 19:22:36,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-11 19:22:36,027 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:36,028 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:36,040 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:36,231 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:36,232 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:36,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:36,232 INFO L85 PathProgramCache]: Analyzing trace with hash -486535481, now seen corresponding path program 18 times [2024-09-11 19:22:36,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:36,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241251223] [2024-09-11 19:22:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:36,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 240 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:36,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:36,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241251223] [2024-09-11 19:22:36,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241251223] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:36,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766312065] [2024-09-11 19:22:36,563 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:22:36,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:36,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:36,565 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:36,567 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-11 19:22:36,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-09-11 19:22:36,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:36,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-11 19:22:36,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 272 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:36,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 272 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:37,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766312065] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:37,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:37,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-11 19:22:37,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152524601] [2024-09-11 19:22:37,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:37,095 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 19:22:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 19:22:37,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=307, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:22:37,096 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 23 states, 23 states have (on average 5.478260869565218) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:37,312 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2024-09-11 19:22:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-11 19:22:37,312 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.478260869565218) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-09-11 19:22:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:37,313 INFO L225 Difference]: With dead ends: 121 [2024-09-11 19:22:37,313 INFO L226 Difference]: Without dead ends: 119 [2024-09-11 19:22:37,314 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 185 SyntacticMatches, 32 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=573, Invalid=987, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:22:37,314 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:37,315 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 168 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-09-11 19:22:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2024-09-11 19:22:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 111 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2024-09-11 19:22:37,329 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 103 [2024-09-11 19:22:37,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:37,329 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2024-09-11 19:22:37,329 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.478260869565218) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:37,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2024-09-11 19:22:37,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-09-11 19:22:37,330 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:37,330 INFO L216 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:37,343 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:37,534 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-11 19:22:37,535 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:37,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1945065043, now seen corresponding path program 19 times [2024-09-11 19:22:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:37,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906165030] [2024-09-11 19:22:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:37,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 530 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:38,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:38,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906165030] [2024-09-11 19:22:38,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906165030] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:38,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663838281] [2024-09-11 19:22:38,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:22:38,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:38,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:38,153 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:38,155 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-11 19:22:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:38,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:22:38,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 576 proven. 272 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:22:38,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 576 proven. 272 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:22:39,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663838281] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:39,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:39,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 56 [2024-09-11 19:22:39,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085597012] [2024-09-11 19:22:39,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:39,195 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-11 19:22:39,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:39,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-11 19:22:39,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=2374, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 19:22:39,197 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 56 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 56 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:39,590 INFO L93 Difference]: Finished difference Result 238 states and 276 transitions. [2024-09-11 19:22:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-11 19:22:39,590 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 56 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-09-11 19:22:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:39,591 INFO L225 Difference]: With dead ends: 238 [2024-09-11 19:22:39,592 INFO L226 Difference]: Without dead ends: 165 [2024-09-11 19:22:39,593 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 171 SyntacticMatches, 32 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1320, Invalid=3936, Unknown=0, NotChecked=0, Total=5256 [2024-09-11 19:22:39,593 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 143 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:39,594 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 321 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:22:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-09-11 19:22:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 114. [2024-09-11 19:22:39,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0353982300884956) internal successors, (117), 113 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2024-09-11 19:22:39,615 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 111 [2024-09-11 19:22:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:39,616 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2024-09-11 19:22:39,616 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 56 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:39,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2024-09-11 19:22:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-09-11 19:22:39,617 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:39,617 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:39,629 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:39,817 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-11 19:22:39,818 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:39,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash -216017966, now seen corresponding path program 20 times [2024-09-11 19:22:39,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:39,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455615795] [2024-09-11 19:22:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:39,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 530 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:40,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:40,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455615795] [2024-09-11 19:22:40,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455615795] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:40,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681944791] [2024-09-11 19:22:40,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:40,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:40,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:40,421 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:40,421 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-11 19:22:40,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:40,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:40,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-11 19:22:40,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 578 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:41,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 578 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:41,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681944791] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:41,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:41,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 58 [2024-09-11 19:22:41,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447154293] [2024-09-11 19:22:41,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:41,588 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-11 19:22:41,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:41,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-11 19:22:41,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=2543, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 19:22:41,589 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:42,032 INFO L93 Difference]: Finished difference Result 245 states and 285 transitions. [2024-09-11 19:22:42,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-11 19:22:42,032 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-09-11 19:22:42,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:42,034 INFO L225 Difference]: With dead ends: 245 [2024-09-11 19:22:42,034 INFO L226 Difference]: Without dead ends: 170 [2024-09-11 19:22:42,035 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 172 SyntacticMatches, 34 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1449, Invalid=4251, Unknown=0, NotChecked=0, Total=5700 [2024-09-11 19:22:42,036 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 127 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:42,036 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 381 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:22:42,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-11 19:22:42,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 116. [2024-09-11 19:22:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0347826086956522) internal successors, (119), 115 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2024-09-11 19:22:42,052 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 113 [2024-09-11 19:22:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:42,053 INFO L474 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2024-09-11 19:22:42,053 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:42,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2024-09-11 19:22:42,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-09-11 19:22:42,054 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:42,054 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:42,066 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:42,254 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-11 19:22:42,255 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:42,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:42,255 INFO L85 PathProgramCache]: Analyzing trace with hash -754120521, now seen corresponding path program 21 times [2024-09-11 19:22:42,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:42,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800402286] [2024-09-11 19:22:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:42,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 306 proven. 614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:42,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:42,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800402286] [2024-09-11 19:22:42,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800402286] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:42,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507253191] [2024-09-11 19:22:42,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:42,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:42,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:42,654 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:42,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-11 19:22:42,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-09-11 19:22:42,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:42,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-11 19:22:42,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 342 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:42,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 342 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:43,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507253191] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:43,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:43,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-09-11 19:22:43,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879160691] [2024-09-11 19:22:43,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:43,217 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-11 19:22:43,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:43,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-11 19:22:43,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=360, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:22:43,218 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:43,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:43,436 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2024-09-11 19:22:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-11 19:22:43,437 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-09-11 19:22:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:43,438 INFO L225 Difference]: With dead ends: 133 [2024-09-11 19:22:43,438 INFO L226 Difference]: Without dead ends: 131 [2024-09-11 19:22:43,438 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 207 SyntacticMatches, 36 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=696, Invalid=1196, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:22:43,438 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:43,439 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 167 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-11 19:22:43,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 124. [2024-09-11 19:22:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.032520325203252) internal successors, (127), 123 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2024-09-11 19:22:43,449 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 115 [2024-09-11 19:22:43,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:43,449 INFO L474 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2024-09-11 19:22:43,449 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:43,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:43,449 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2024-09-11 19:22:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-11 19:22:43,450 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:43,450 INFO L216 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:43,465 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:43,650 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-11 19:22:43,651 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:43,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1077719965, now seen corresponding path program 22 times [2024-09-11 19:22:43,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:43,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174438504] [2024-09-11 19:22:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 668 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:44,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:44,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174438504] [2024-09-11 19:22:44,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174438504] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:44,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693818592] [2024-09-11 19:22:44,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:44,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:44,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:44,321 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:44,322 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-11 19:22:44,425 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:44,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:44,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-11 19:22:44,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 722 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:45,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 722 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:45,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693818592] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:45,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:45,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 65 [2024-09-11 19:22:45,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730208999] [2024-09-11 19:22:45,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:45,686 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-11 19:22:45,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:45,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-11 19:22:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=970, Invalid=3190, Unknown=0, NotChecked=0, Total=4160 [2024-09-11 19:22:45,687 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand has 65 states, 65 states have (on average 3.3230769230769233) internal successors, (216), 65 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:46,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:46,537 INFO L93 Difference]: Finished difference Result 346 states and 391 transitions. [2024-09-11 19:22:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-11 19:22:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.3230769230769233) internal successors, (216), 65 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2024-09-11 19:22:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:46,538 INFO L225 Difference]: With dead ends: 346 [2024-09-11 19:22:46,539 INFO L226 Difference]: Without dead ends: 188 [2024-09-11 19:22:46,540 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 187 SyntacticMatches, 35 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2629, Invalid=8083, Unknown=0, NotChecked=0, Total=10712 [2024-09-11 19:22:46,540 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 210 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:46,540 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 492 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:22:46,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-09-11 19:22:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 128. [2024-09-11 19:22:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.031496062992126) internal successors, (131), 127 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2024-09-11 19:22:46,551 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 123 [2024-09-11 19:22:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:46,551 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2024-09-11 19:22:46,551 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.3230769230769233) internal successors, (216), 65 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:46,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:46,552 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2024-09-11 19:22:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-09-11 19:22:46,552 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:46,552 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:46,566 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-11 19:22:46,753 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-11 19:22:46,753 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:46,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash -574565465, now seen corresponding path program 23 times [2024-09-11 19:22:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:46,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737090443] [2024-09-11 19:22:46,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:46,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 380 proven. 762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:47,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:47,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737090443] [2024-09-11 19:22:47,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737090443] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:47,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040838638] [2024-09-11 19:22:47,204 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:47,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:47,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:47,206 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:47,208 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-11 19:22:47,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-09-11 19:22:47,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:47,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-11 19:22:47,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 420 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:47,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 420 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:47,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040838638] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:47,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:47,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-09-11 19:22:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792700585] [2024-09-11 19:22:47,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:47,831 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-11 19:22:47,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-11 19:22:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=417, Unknown=0, NotChecked=0, Total=702 [2024-09-11 19:22:47,832 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:48,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:48,087 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2024-09-11 19:22:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-11 19:22:48,087 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-09-11 19:22:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:48,088 INFO L225 Difference]: With dead ends: 145 [2024-09-11 19:22:48,088 INFO L226 Difference]: Without dead ends: 143 [2024-09-11 19:22:48,089 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 229 SyntacticMatches, 40 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1067 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=831, Invalid=1425, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:22:48,089 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 15 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:48,089 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 224 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:48,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-09-11 19:22:48,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 136. [2024-09-11 19:22:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0296296296296297) internal successors, (139), 135 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2024-09-11 19:22:48,100 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 127 [2024-09-11 19:22:48,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:48,100 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2024-09-11 19:22:48,100 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:48,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2024-09-11 19:22:48,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-09-11 19:22:48,101 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:48,101 INFO L216 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:48,115 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:48,305 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-11 19:22:48,305 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:48,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -407990643, now seen corresponding path program 24 times [2024-09-11 19:22:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:48,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623517202] [2024-09-11 19:22:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 822 proven. 480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:49,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:49,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623517202] [2024-09-11 19:22:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623517202] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:49,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801970780] [2024-09-11 19:22:49,113 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:22:49,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:49,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:49,114 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:49,115 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-11 19:22:49,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-11 19:22:49,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:49,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-11 19:22:49,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 882 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:50,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 882 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:50,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801970780] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:50,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:50,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 71 [2024-09-11 19:22:50,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432837922] [2024-09-11 19:22:50,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:50,707 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-11 19:22:50,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:50,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-11 19:22:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=3816, Unknown=0, NotChecked=0, Total=4970 [2024-09-11 19:22:50,708 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand has 71 states, 71 states have (on average 3.323943661971831) internal successors, (236), 71 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:51,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:51,662 INFO L93 Difference]: Finished difference Result 380 states and 429 transitions. [2024-09-11 19:22:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-11 19:22:51,663 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.323943661971831) internal successors, (236), 71 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-09-11 19:22:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:51,664 INFO L225 Difference]: With dead ends: 380 [2024-09-11 19:22:51,664 INFO L226 Difference]: Without dead ends: 206 [2024-09-11 19:22:51,665 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 205 SyntacticMatches, 39 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4243 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3155, Invalid=9727, Unknown=0, NotChecked=0, Total=12882 [2024-09-11 19:22:51,666 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 265 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:51,666 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 543 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:22:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-09-11 19:22:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 140. [2024-09-11 19:22:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 139 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2024-09-11 19:22:51,677 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 135 [2024-09-11 19:22:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:51,677 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2024-09-11 19:22:51,678 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.323943661971831) internal successors, (236), 71 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:51,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2024-09-11 19:22:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-09-11 19:22:51,679 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:51,679 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:51,695 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:51,879 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-11 19:22:51,879 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:51,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash 287371159, now seen corresponding path program 25 times [2024-09-11 19:22:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531697077] [2024-09-11 19:22:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:51,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 462 proven. 926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:52,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531697077] [2024-09-11 19:22:52,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531697077] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883025135] [2024-09-11 19:22:52,407 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:22:52,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:52,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:52,408 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:52,410 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-11 19:22:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:52,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-11 19:22:52,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 506 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:52,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 506 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:53,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883025135] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:53,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:53,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-09-11 19:22:53,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926226830] [2024-09-11 19:22:53,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:53,098 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-11 19:22:53,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:53,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-11 19:22:53,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=478, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:22:53,099 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand has 29 states, 29 states have (on average 5.586206896551724) internal successors, (162), 28 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:53,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:53,382 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2024-09-11 19:22:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-11 19:22:53,382 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.586206896551724) internal successors, (162), 28 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2024-09-11 19:22:53,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:53,383 INFO L225 Difference]: With dead ends: 157 [2024-09-11 19:22:53,384 INFO L226 Difference]: Without dead ends: 155 [2024-09-11 19:22:53,384 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 251 SyntacticMatches, 44 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=978, Invalid=1674, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:22:53,385 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 9 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:53,385 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 221 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:53,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-11 19:22:53,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 148. [2024-09-11 19:22:53,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0272108843537415) internal successors, (151), 147 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 151 transitions. [2024-09-11 19:22:53,401 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 151 transitions. Word has length 139 [2024-09-11 19:22:53,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:53,401 INFO L474 AbstractCegarLoop]: Abstraction has 148 states and 151 transitions. [2024-09-11 19:22:53,401 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.586206896551724) internal successors, (162), 28 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:53,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 151 transitions. [2024-09-11 19:22:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-09-11 19:22:53,403 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:53,403 INFO L216 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:53,417 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:53,606 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-11 19:22:53,607 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:53,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:53,607 INFO L85 PathProgramCache]: Analyzing trace with hash -219432323, now seen corresponding path program 26 times [2024-09-11 19:22:53,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:53,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300042761] [2024-09-11 19:22:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:53,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 992 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:54,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:54,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300042761] [2024-09-11 19:22:54,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300042761] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:54,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007819630] [2024-09-11 19:22:54,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:54,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:54,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:54,595 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:54,603 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-11 19:22:54,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:54,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:54,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-11 19:22:54,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 1056 proven. 506 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:22:55,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 1056 proven. 506 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:22:56,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007819630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:56,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:56,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 74 [2024-09-11 19:22:56,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180874322] [2024-09-11 19:22:56,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:56,295 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-11 19:22:56,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:56,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-11 19:22:56,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=4174, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 19:22:56,297 INFO L87 Difference]: Start difference. First operand 148 states and 151 transitions. Second operand has 74 states, 74 states have (on average 3.3378378378378377) internal successors, (247), 74 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:56,941 INFO L93 Difference]: Finished difference Result 316 states and 366 transitions. [2024-09-11 19:22:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-11 19:22:56,941 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.3378378378378377) internal successors, (247), 74 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-09-11 19:22:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:56,942 INFO L225 Difference]: With dead ends: 316 [2024-09-11 19:22:56,942 INFO L226 Difference]: Without dead ends: 219 [2024-09-11 19:22:56,943 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 225 SyntacticMatches, 44 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3471 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2334, Invalid=6978, Unknown=0, NotChecked=0, Total=9312 [2024-09-11 19:22:56,943 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 218 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:56,943 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 505 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:22:56,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-11 19:22:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 150. [2024-09-11 19:22:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0268456375838926) internal successors, (153), 149 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2024-09-11 19:22:56,955 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 147 [2024-09-11 19:22:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:56,956 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2024-09-11 19:22:56,956 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.3378378378378377) internal successors, (247), 74 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:22:56,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:56,956 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2024-09-11 19:22:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-11 19:22:56,957 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:56,957 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:56,969 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:57,160 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:57,161 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:57,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1636862430, now seen corresponding path program 27 times [2024-09-11 19:22:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394703237] [2024-09-11 19:22:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:57,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 992 proven. 618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:58,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394703237] [2024-09-11 19:22:58,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394703237] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:58,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655594963] [2024-09-11 19:22:58,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:58,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:58,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:58,110 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:22:58,110 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-11 19:22:58,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-11 19:22:58,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:58,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-11 19:22:58,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 1058 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:59,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 1058 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:59,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655594963] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:59,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:59,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 76 [2024-09-11 19:22:59,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824292594] [2024-09-11 19:22:59,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:59,991 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-11 19:22:59,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:59,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-11 19:22:59,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=4397, Unknown=0, NotChecked=0, Total=5700 [2024-09-11 19:22:59,992 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand has 76 states, 76 states have (on average 3.276315789473684) internal successors, (249), 76 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:00,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:00,869 INFO L93 Difference]: Finished difference Result 323 states and 375 transitions. [2024-09-11 19:23:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-11 19:23:00,870 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.276315789473684) internal successors, (249), 76 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-09-11 19:23:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:00,871 INFO L225 Difference]: With dead ends: 323 [2024-09-11 19:23:00,871 INFO L226 Difference]: Without dead ends: 224 [2024-09-11 19:23:00,872 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 226 SyntacticMatches, 46 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2505, Invalid=7395, Unknown=0, NotChecked=0, Total=9900 [2024-09-11 19:23:00,872 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 210 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:00,873 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 536 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:23:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-11 19:23:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 152. [2024-09-11 19:23:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 151 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 155 transitions. [2024-09-11 19:23:00,886 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 155 transitions. Word has length 149 [2024-09-11 19:23:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:00,887 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 155 transitions. [2024-09-11 19:23:00,887 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.276315789473684) internal successors, (249), 76 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:00,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 155 transitions. [2024-09-11 19:23:00,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-09-11 19:23:00,888 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:00,888 INFO L216 NwaCegarLoop]: trace histogram [25, 24, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:00,900 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:01,091 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:01,092 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:01,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2012404871, now seen corresponding path program 28 times [2024-09-11 19:23:01,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:01,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723817721] [2024-09-11 19:23:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:01,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 552 proven. 1106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:01,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:01,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723817721] [2024-09-11 19:23:01,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723817721] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:01,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775287883] [2024-09-11 19:23:01,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:23:01,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:01,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:01,702 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:01,707 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-11 19:23:01,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:23:01,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:01,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:23:01,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 600 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:02,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 600 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:02,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775287883] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:02,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:02,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-09-11 19:23:02,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138246623] [2024-09-11 19:23:02,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:02,462 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-11 19:23:02,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-11 19:23:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=543, Unknown=0, NotChecked=0, Total=930 [2024-09-11 19:23:02,463 INFO L87 Difference]: Start difference. First operand 152 states and 155 transitions. Second operand has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 30 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:02,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:02,720 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2024-09-11 19:23:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-11 19:23:02,721 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 30 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2024-09-11 19:23:02,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:02,722 INFO L225 Difference]: With dead ends: 169 [2024-09-11 19:23:02,722 INFO L226 Difference]: Without dead ends: 167 [2024-09-11 19:23:02,722 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 273 SyntacticMatches, 48 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1137, Invalid=1943, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 19:23:02,723 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:02,723 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 252 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-09-11 19:23:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 160. [2024-09-11 19:23:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0251572327044025) internal successors, (163), 159 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 163 transitions. [2024-09-11 19:23:02,736 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 163 transitions. Word has length 151 [2024-09-11 19:23:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:02,737 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 163 transitions. [2024-09-11 19:23:02,737 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 30 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:02,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 163 transitions. [2024-09-11 19:23:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-09-11 19:23:02,738 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:02,738 INFO L216 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:02,750 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-11 19:23:02,938 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:02,939 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:02,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash 255440749, now seen corresponding path program 29 times [2024-09-11 19:23:02,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:02,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408308814] [2024-09-11 19:23:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:02,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 1178 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:04,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:04,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408308814] [2024-09-11 19:23:04,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408308814] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:04,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235616753] [2024-09-11 19:23:04,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:23:04,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:04,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:04,121 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:04,125 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-11 19:23:04,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-09-11 19:23:04,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:04,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-09-11 19:23:04,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 1250 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:05,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 1250 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:06,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235616753] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:06,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:06,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 83 [2024-09-11 19:23:06,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034078319] [2024-09-11 19:23:06,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:06,273 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-11 19:23:06,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:06,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-11 19:23:06,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1570, Invalid=5236, Unknown=0, NotChecked=0, Total=6806 [2024-09-11 19:23:06,275 INFO L87 Difference]: Start difference. First operand 160 states and 163 transitions. Second operand has 83 states, 83 states have (on average 3.325301204819277) internal successors, (276), 83 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:07,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:07,582 INFO L93 Difference]: Finished difference Result 448 states and 505 transitions. [2024-09-11 19:23:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-11 19:23:07,582 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.325301204819277) internal successors, (276), 83 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2024-09-11 19:23:07,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:07,584 INFO L225 Difference]: With dead ends: 448 [2024-09-11 19:23:07,584 INFO L226 Difference]: Without dead ends: 242 [2024-09-11 19:23:07,586 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 241 SyntacticMatches, 47 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5905 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4351, Invalid=13471, Unknown=0, NotChecked=0, Total=17822 [2024-09-11 19:23:07,586 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 332 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:07,586 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 771 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:23:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-09-11 19:23:07,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 164. [2024-09-11 19:23:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0245398773006136) internal successors, (167), 163 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2024-09-11 19:23:07,608 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 159 [2024-09-11 19:23:07,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:07,608 INFO L474 AbstractCegarLoop]: Abstraction has 164 states and 167 transitions. [2024-09-11 19:23:07,608 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.325301204819277) internal successors, (276), 83 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:07,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 167 transitions. [2024-09-11 19:23:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-09-11 19:23:07,609 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:07,609 INFO L216 NwaCegarLoop]: trace histogram [27, 26, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:07,622 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:07,813 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:07,813 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:07,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:07,814 INFO L85 PathProgramCache]: Analyzing trace with hash -105112969, now seen corresponding path program 30 times [2024-09-11 19:23:07,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:07,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891213949] [2024-09-11 19:23:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:07,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 650 proven. 1302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:08,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:08,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891213949] [2024-09-11 19:23:08,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891213949] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:08,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872391328] [2024-09-11 19:23:08,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:23:08,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:08,522 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:08,523 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-11 19:23:08,694 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-09-11 19:23:08,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:08,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-11 19:23:08,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 702 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:08,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 702 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:09,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872391328] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:09,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:09,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-09-11 19:23:09,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613230543] [2024-09-11 19:23:09,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:09,447 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-11 19:23:09,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-11 19:23:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=612, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:23:09,448 INFO L87 Difference]: Start difference. First operand 164 states and 167 transitions. Second operand has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 32 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:09,812 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2024-09-11 19:23:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-11 19:23:09,812 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 32 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-09-11 19:23:09,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:09,813 INFO L225 Difference]: With dead ends: 181 [2024-09-11 19:23:09,813 INFO L226 Difference]: Without dead ends: 179 [2024-09-11 19:23:09,814 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 295 SyntacticMatches, 52 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1703 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1308, Invalid=2232, Unknown=0, NotChecked=0, Total=3540 [2024-09-11 19:23:09,814 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 9 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:09,814 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 259 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-11 19:23:09,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 172. [2024-09-11 19:23:09,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.023391812865497) internal successors, (175), 171 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 175 transitions. [2024-09-11 19:23:09,829 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 175 transitions. Word has length 163 [2024-09-11 19:23:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:09,829 INFO L474 AbstractCegarLoop]: Abstraction has 172 states and 175 transitions. [2024-09-11 19:23:09,829 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 32 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:09,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 175 transitions. [2024-09-11 19:23:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-09-11 19:23:09,830 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:09,830 INFO L216 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:09,845 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-11 19:23:10,031 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-11 19:23:10,031 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:10,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:10,032 INFO L85 PathProgramCache]: Analyzing trace with hash 111019357, now seen corresponding path program 31 times [2024-09-11 19:23:10,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:10,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482156001] [2024-09-11 19:23:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:10,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1380 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:11,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:11,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482156001] [2024-09-11 19:23:11,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482156001] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:11,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930243094] [2024-09-11 19:23:11,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:23:11,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:11,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:11,286 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:11,287 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-11 19:23:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:11,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-11 19:23:11,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1456 proven. 702 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:23:12,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1456 proven. 702 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:23:13,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930243094] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:13,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:13,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 86 [2024-09-11 19:23:13,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275260430] [2024-09-11 19:23:13,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:13,567 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-11 19:23:13,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:13,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-11 19:23:13,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1656, Invalid=5654, Unknown=0, NotChecked=0, Total=7310 [2024-09-11 19:23:13,568 INFO L87 Difference]: Start difference. First operand 172 states and 175 transitions. Second operand has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:14,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:14,401 INFO L93 Difference]: Finished difference Result 368 states and 426 transitions. [2024-09-11 19:23:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-11 19:23:14,401 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2024-09-11 19:23:14,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:14,403 INFO L225 Difference]: With dead ends: 368 [2024-09-11 19:23:14,403 INFO L226 Difference]: Without dead ends: 255 [2024-09-11 19:23:14,404 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 261 SyntacticMatches, 52 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4727 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3170, Invalid=9486, Unknown=0, NotChecked=0, Total=12656 [2024-09-11 19:23:14,404 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 218 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:14,405 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 591 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:23:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-09-11 19:23:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 174. [2024-09-11 19:23:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.023121387283237) internal successors, (177), 173 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2024-09-11 19:23:14,421 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 171 [2024-09-11 19:23:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:14,421 INFO L474 AbstractCegarLoop]: Abstraction has 174 states and 177 transitions. [2024-09-11 19:23:14,421 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:14,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 177 transitions. [2024-09-11 19:23:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-11 19:23:14,422 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:14,422 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:14,435 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:14,623 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-11 19:23:14,623 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:14,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:14,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1803394558, now seen corresponding path program 32 times [2024-09-11 19:23:14,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:14,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470845392] [2024-09-11 19:23:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 1380 proven. 834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:15,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:15,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470845392] [2024-09-11 19:23:15,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470845392] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:15,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621063225] [2024-09-11 19:23:15,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:23:15,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:15,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:15,913 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:15,915 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-11 19:23:16,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:23:16,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:16,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-11 19:23:16,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:17,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 756 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:17,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 756 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:18,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621063225] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:18,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:18,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 30, 30] total 87 [2024-09-11 19:23:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868417834] [2024-09-11 19:23:18,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:18,804 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-09-11 19:23:18,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-09-11 19:23:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1278, Invalid=6204, Unknown=0, NotChecked=0, Total=7482 [2024-09-11 19:23:18,805 INFO L87 Difference]: Start difference. First operand 174 states and 177 transitions. Second operand has 87 states, 87 states have (on average 3.9655172413793105) internal successors, (345), 87 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:21,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:21,593 INFO L93 Difference]: Finished difference Result 380 states and 441 transitions. [2024-09-11 19:23:21,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2024-09-11 19:23:21,594 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.9655172413793105) internal successors, (345), 87 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-09-11 19:23:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:21,595 INFO L225 Difference]: With dead ends: 380 [2024-09-11 19:23:21,595 INFO L226 Difference]: Without dead ends: 265 [2024-09-11 19:23:21,600 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 289 SyntacticMatches, 56 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20626 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7960, Invalid=42440, Unknown=0, NotChecked=0, Total=50400 [2024-09-11 19:23:21,605 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 504 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:21,605 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 348 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:23:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-09-11 19:23:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 180. [2024-09-11 19:23:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0223463687150838) internal successors, (183), 179 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 183 transitions. [2024-09-11 19:23:21,635 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 183 transitions. Word has length 173 [2024-09-11 19:23:21,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:21,635 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 183 transitions. [2024-09-11 19:23:21,636 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.9655172413793105) internal successors, (345), 87 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:21,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 183 transitions. [2024-09-11 19:23:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-09-11 19:23:21,636 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:21,637 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:21,649 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-11 19:23:21,837 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-11 19:23:21,838 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:21,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:21,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1512722330, now seen corresponding path program 33 times [2024-09-11 19:23:21,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:21,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861304667] [2024-09-11 19:23:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:21,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1487 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:23,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:23,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861304667] [2024-09-11 19:23:23,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861304667] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:23,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687804095] [2024-09-11 19:23:23,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:23:23,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:23,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:23,330 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:23,331 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-11 19:23:23,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-09-11 19:23:23,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:23,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-11 19:23:23,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1568 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:24,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1568 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:25,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687804095] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:25,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:25,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 91 [2024-09-11 19:23:25,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178616031] [2024-09-11 19:23:25,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:25,958 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-09-11 19:23:25,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:25,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-09-11 19:23:25,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1863, Invalid=6327, Unknown=0, NotChecked=0, Total=8190 [2024-09-11 19:23:25,959 INFO L87 Difference]: Start difference. First operand 180 states and 183 transitions. Second operand has 91 states, 91 states have (on average 3.2857142857142856) internal successors, (299), 91 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:26,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:26,920 INFO L93 Difference]: Finished difference Result 388 states and 450 transitions. [2024-09-11 19:23:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-11 19:23:26,920 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.2857142857142856) internal successors, (299), 91 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2024-09-11 19:23:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:26,925 INFO L225 Difference]: With dead ends: 388 [2024-09-11 19:23:26,926 INFO L226 Difference]: Without dead ends: 269 [2024-09-11 19:23:26,927 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 271 SyntacticMatches, 56 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5312 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3605, Invalid=10675, Unknown=0, NotChecked=0, Total=14280 [2024-09-11 19:23:26,927 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 255 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:26,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 626 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:23:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-09-11 19:23:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 182. [2024-09-11 19:23:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.022099447513812) internal successors, (185), 181 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 185 transitions. [2024-09-11 19:23:26,955 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 185 transitions. Word has length 179 [2024-09-11 19:23:26,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:26,955 INFO L474 AbstractCegarLoop]: Abstraction has 182 states and 185 transitions. [2024-09-11 19:23:26,955 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.2857142857142856) internal successors, (299), 91 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:26,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 185 transitions. [2024-09-11 19:23:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-11 19:23:26,956 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:26,956 INFO L216 NwaCegarLoop]: trace histogram [30, 29, 29, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:26,969 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:27,160 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-11 19:23:27,161 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:27,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:27,161 INFO L85 PathProgramCache]: Analyzing trace with hash -334612673, now seen corresponding path program 34 times [2024-09-11 19:23:27,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:27,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438795225] [2024-09-11 19:23:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:27,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 812 proven. 1626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:28,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:28,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438795225] [2024-09-11 19:23:28,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438795225] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:28,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187034539] [2024-09-11 19:23:28,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:23:28,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:28,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:28,134 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:28,135 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-11 19:23:28,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:23:28,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:28,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-11 19:23:28,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 870 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:28,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 870 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:29,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187034539] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:29,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:29,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-09-11 19:23:29,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038333709] [2024-09-11 19:23:29,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:29,205 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-11 19:23:29,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:29,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-11 19:23:29,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=723, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:23:29,205 INFO L87 Difference]: Start difference. First operand 182 states and 185 transitions. Second operand has 36 states, 36 states have (on average 5.666666666666667) internal successors, (204), 35 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:29,618 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2024-09-11 19:23:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-11 19:23:29,619 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.666666666666667) internal successors, (204), 35 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-09-11 19:23:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:29,620 INFO L225 Difference]: With dead ends: 199 [2024-09-11 19:23:29,620 INFO L226 Difference]: Without dead ends: 197 [2024-09-11 19:23:29,621 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 328 SyntacticMatches, 58 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2075 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1587, Invalid=2703, Unknown=0, NotChecked=0, Total=4290 [2024-09-11 19:23:29,621 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 13 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:29,621 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 290 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-09-11 19:23:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 190. [2024-09-11 19:23:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.0211640211640212) internal successors, (193), 189 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 193 transitions. [2024-09-11 19:23:29,639 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 193 transitions. Word has length 181 [2024-09-11 19:23:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:29,639 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 193 transitions. [2024-09-11 19:23:29,640 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.666666666666667) internal successors, (204), 35 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:29,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 193 transitions. [2024-09-11 19:23:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-09-11 19:23:29,640 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:29,641 INFO L216 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:29,655 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-11 19:23:29,844 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-11 19:23:29,845 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:29,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:29,845 INFO L85 PathProgramCache]: Analyzing trace with hash -661988827, now seen corresponding path program 35 times [2024-09-11 19:23:29,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:29,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114616210] [2024-09-11 19:23:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 1713 proven. 957 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:31,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:31,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114616210] [2024-09-11 19:23:31,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114616210] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:31,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193193070] [2024-09-11 19:23:31,384 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:23:31,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:31,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:31,388 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:31,396 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-11 19:23:31,605 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-11 19:23:31,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:31,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-11 19:23:31,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 1800 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:33,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 1800 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:34,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193193070] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:34,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:34,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 98 [2024-09-11 19:23:34,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871427880] [2024-09-11 19:23:34,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:34,220 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-11 19:23:34,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-11 19:23:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2180, Invalid=7326, Unknown=0, NotChecked=0, Total=9506 [2024-09-11 19:23:34,221 INFO L87 Difference]: Start difference. First operand 190 states and 193 transitions. Second operand has 98 states, 98 states have (on average 3.326530612244898) internal successors, (326), 98 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:35,744 INFO L93 Difference]: Finished difference Result 533 states and 600 transitions. [2024-09-11 19:23:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-09-11 19:23:35,744 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.326530612244898) internal successors, (326), 98 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2024-09-11 19:23:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:35,746 INFO L225 Difference]: With dead ends: 533 [2024-09-11 19:23:35,746 INFO L226 Difference]: Without dead ends: 287 [2024-09-11 19:23:35,748 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 286 SyntacticMatches, 57 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8365 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6116, Invalid=19006, Unknown=0, NotChecked=0, Total=25122 [2024-09-11 19:23:35,749 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 409 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:35,749 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 758 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:23:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-09-11 19:23:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 194. [2024-09-11 19:23:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.0207253886010363) internal successors, (197), 193 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2024-09-11 19:23:35,771 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 189 [2024-09-11 19:23:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:35,771 INFO L474 AbstractCegarLoop]: Abstraction has 194 states and 197 transitions. [2024-09-11 19:23:35,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.326530612244898) internal successors, (326), 98 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:35,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 197 transitions. [2024-09-11 19:23:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-09-11 19:23:35,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:35,772 INFO L216 NwaCegarLoop]: trace histogram [32, 31, 31, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:35,787 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:35,976 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-11 19:23:35,977 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:35,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:35,977 INFO L85 PathProgramCache]: Analyzing trace with hash -904540241, now seen corresponding path program 36 times [2024-09-11 19:23:35,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:35,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973667392] [2024-09-11 19:23:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:35,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 930 proven. 1862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:36,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:36,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973667392] [2024-09-11 19:23:36,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973667392] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:36,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212106842] [2024-09-11 19:23:36,892 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:23:36,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:36,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:36,894 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:36,895 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-11 19:23:37,110 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-09-11 19:23:37,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:37,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-11 19:23:37,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 992 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:37,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 992 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:37,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212106842] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:37,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:37,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-09-11 19:23:37,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969846276] [2024-09-11 19:23:37,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:37,959 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-11 19:23:37,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-11 19:23:37,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=802, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:23:37,960 INFO L87 Difference]: Start difference. First operand 194 states and 197 transitions. Second operand has 38 states, 38 states have (on average 5.684210526315789) internal successors, (216), 37 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:38,424 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2024-09-11 19:23:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-11 19:23:38,425 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.684210526315789) internal successors, (216), 37 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2024-09-11 19:23:38,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:38,426 INFO L225 Difference]: With dead ends: 211 [2024-09-11 19:23:38,426 INFO L226 Difference]: Without dead ends: 209 [2024-09-11 19:23:38,427 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 351 SyntacticMatches, 61 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2312 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1788, Invalid=3042, Unknown=0, NotChecked=0, Total=4830 [2024-09-11 19:23:38,427 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:38,427 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 329 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:38,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-09-11 19:23:38,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 202. [2024-09-11 19:23:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.0199004975124377) internal successors, (205), 201 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 205 transitions. [2024-09-11 19:23:38,448 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 205 transitions. Word has length 193 [2024-09-11 19:23:38,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:38,448 INFO L474 AbstractCegarLoop]: Abstraction has 202 states and 205 transitions. [2024-09-11 19:23:38,448 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.684210526315789) internal successors, (216), 37 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:38,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 205 transitions. [2024-09-11 19:23:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-09-11 19:23:38,449 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:38,449 INFO L216 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:38,463 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-11 19:23:38,649 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-11 19:23:38,650 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:38,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:38,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1063977621, now seen corresponding path program 37 times [2024-09-11 19:23:38,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:38,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217333187] [2024-09-11 19:23:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:38,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1955 proven. 1085 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:40,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:40,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217333187] [2024-09-11 19:23:40,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217333187] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:40,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561923050] [2024-09-11 19:23:40,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:23:40,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:40,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:40,404 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:40,405 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-11 19:23:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:40,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-11 19:23:40,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:42,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 2046 proven. 992 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:23:42,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 2046 proven. 992 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:23:43,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561923050] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:43,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:43,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 101 [2024-09-11 19:23:43,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470499658] [2024-09-11 19:23:43,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:43,515 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-11 19:23:43,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:43,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-11 19:23:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=7819, Unknown=0, NotChecked=0, Total=10100 [2024-09-11 19:23:43,516 INFO L87 Difference]: Start difference. First operand 202 states and 205 transitions. Second operand has 101 states, 101 states have (on average 3.3366336633663365) internal successors, (337), 101 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:44,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:44,560 INFO L93 Difference]: Finished difference Result 433 states and 501 transitions. [2024-09-11 19:23:44,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-09-11 19:23:44,560 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.3366336633663365) internal successors, (337), 101 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-09-11 19:23:44,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:44,562 INFO L225 Difference]: With dead ends: 433 [2024-09-11 19:23:44,562 INFO L226 Difference]: Without dead ends: 300 [2024-09-11 19:23:44,563 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 306 SyntacticMatches, 62 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4395, Invalid=13161, Unknown=0, NotChecked=0, Total=17556 [2024-09-11 19:23:44,567 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 301 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:44,567 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 737 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:23:44,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-09-11 19:23:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 204. [2024-09-11 19:23:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.019704433497537) internal successors, (207), 203 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions. [2024-09-11 19:23:44,592 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 201 [2024-09-11 19:23:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:44,593 INFO L474 AbstractCegarLoop]: Abstraction has 204 states and 207 transitions. [2024-09-11 19:23:44,593 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.3366336633663365) internal successors, (337), 101 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:44,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 207 transitions. [2024-09-11 19:23:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-09-11 19:23:44,594 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:44,594 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:44,607 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:44,797 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-11 19:23:44,798 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:44,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:44,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2008059782, now seen corresponding path program 38 times [2024-09-11 19:23:44,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:44,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220881026] [2024-09-11 19:23:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:44,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 1955 proven. 1149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:46,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:46,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220881026] [2024-09-11 19:23:46,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220881026] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:46,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243011909] [2024-09-11 19:23:46,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:23:46,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:46,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:46,438 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:46,439 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-11 19:23:46,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:23:46,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:46,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-11 19:23:46,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 2048 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:48,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 2048 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:49,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243011909] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:49,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:49,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 103 [2024-09-11 19:23:49,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583904674] [2024-09-11 19:23:49,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:49,356 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-09-11 19:23:49,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:49,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-09-11 19:23:49,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2383, Invalid=8123, Unknown=0, NotChecked=0, Total=10506 [2024-09-11 19:23:49,358 INFO L87 Difference]: Start difference. First operand 204 states and 207 transitions. Second operand has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:50,470 INFO L93 Difference]: Finished difference Result 440 states and 510 transitions. [2024-09-11 19:23:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-11 19:23:50,470 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-09-11 19:23:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:50,472 INFO L225 Difference]: With dead ends: 440 [2024-09-11 19:23:50,472 INFO L226 Difference]: Without dead ends: 305 [2024-09-11 19:23:50,473 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 307 SyntacticMatches, 64 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6840 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4629, Invalid=13731, Unknown=0, NotChecked=0, Total=18360 [2024-09-11 19:23:50,474 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 266 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:50,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 748 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:23:50,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-09-11 19:23:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 206. [2024-09-11 19:23:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.0195121951219512) internal successors, (209), 205 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 209 transitions. [2024-09-11 19:23:50,496 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 209 transitions. Word has length 203 [2024-09-11 19:23:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:50,497 INFO L474 AbstractCegarLoop]: Abstraction has 206 states and 209 transitions. [2024-09-11 19:23:50,497 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:50,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 209 transitions. [2024-09-11 19:23:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-11 19:23:50,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:50,498 INFO L216 NwaCegarLoop]: trace histogram [34, 33, 33, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:50,513 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-09-11 19:23:50,701 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:50,702 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:50,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:50,702 INFO L85 PathProgramCache]: Analyzing trace with hash 701495583, now seen corresponding path program 39 times [2024-09-11 19:23:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866325517] [2024-09-11 19:23:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:50,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3170 backedges. 1056 proven. 2114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:51,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:51,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866325517] [2024-09-11 19:23:51,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866325517] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:51,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512255241] [2024-09-11 19:23:51,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:23:51,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:51,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:51,789 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:51,791 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-11 19:23:52,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2024-09-11 19:23:52,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:52,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-11 19:23:52,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3170 backedges. 1122 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:52,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3170 backedges. 1122 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:53,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512255241] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:53,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:53,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-09-11 19:23:53,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979326812] [2024-09-11 19:23:53,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:53,220 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-11 19:23:53,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:53,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-11 19:23:53,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=885, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:23:53,222 INFO L87 Difference]: Start difference. First operand 206 states and 209 transitions. Second operand has 40 states, 40 states have (on average 5.7) internal successors, (228), 39 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:53,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:53,733 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2024-09-11 19:23:53,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-09-11 19:23:53,733 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.7) internal successors, (228), 39 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2024-09-11 19:23:53,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:53,735 INFO L225 Difference]: With dead ends: 223 [2024-09-11 19:23:53,735 INFO L226 Difference]: Without dead ends: 221 [2024-09-11 19:23:53,736 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 373 SyntacticMatches, 65 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2594 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2001, Invalid=3401, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 19:23:53,737 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 11 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:53,738 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 338 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:53,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-09-11 19:23:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 214. [2024-09-11 19:23:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.0187793427230047) internal successors, (217), 213 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 217 transitions. [2024-09-11 19:23:53,763 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 217 transitions. Word has length 205 [2024-09-11 19:23:53,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:53,763 INFO L474 AbstractCegarLoop]: Abstraction has 214 states and 217 transitions. [2024-09-11 19:23:53,763 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.7) internal successors, (228), 39 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:23:53,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 217 transitions. [2024-09-11 19:23:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-11 19:23:53,764 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:53,764 INFO L216 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:23:53,778 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:53,965 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:53,966 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:53,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:53,966 INFO L85 PathProgramCache]: Analyzing trace with hash 417119237, now seen corresponding path program 40 times [2024-09-11 19:23:53,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:53,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16676338] [2024-09-11 19:23:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:53,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 2213 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:55,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:55,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16676338] [2024-09-11 19:23:55,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16676338] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:55,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629234107] [2024-09-11 19:23:55,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:23:55,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:55,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:55,921 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:55,922 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-11 19:23:56,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:23:56,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:56,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-09-11 19:23:56,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 2312 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:58,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 2312 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:59,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629234107] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:59,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:59,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 110 [2024-09-11 19:23:59,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788658853] [2024-09-11 19:23:59,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:59,516 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-09-11 19:23:59,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:59,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-09-11 19:23:59,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2740, Invalid=9250, Unknown=0, NotChecked=0, Total=11990 [2024-09-11 19:23:59,519 INFO L87 Difference]: Start difference. First operand 214 states and 217 transitions. Second operand has 110 states, 110 states have (on average 3.327272727272727) internal successors, (366), 110 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:01,358 INFO L93 Difference]: Finished difference Result 601 states and 676 transitions. [2024-09-11 19:24:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-09-11 19:24:01,358 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.327272727272727) internal successors, (366), 110 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2024-09-11 19:24:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:01,364 INFO L225 Difference]: With dead ends: 601 [2024-09-11 19:24:01,364 INFO L226 Difference]: Without dead ends: 323 [2024-09-11 19:24:01,366 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 322 SyntacticMatches, 65 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10639 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7744, Invalid=24118, Unknown=0, NotChecked=0, Total=31862 [2024-09-11 19:24:01,370 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 424 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:01,370 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 960 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:24:01,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-11 19:24:01,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 218. [2024-09-11 19:24:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.0184331797235022) internal successors, (221), 217 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 221 transitions. [2024-09-11 19:24:01,400 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 221 transitions. Word has length 213 [2024-09-11 19:24:01,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:01,400 INFO L474 AbstractCegarLoop]: Abstraction has 218 states and 221 transitions. [2024-09-11 19:24:01,400 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.327272727272727) internal successors, (366), 110 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:01,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 221 transitions. [2024-09-11 19:24:01,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-09-11 19:24:01,401 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:01,401 INFO L216 NwaCegarLoop]: trace histogram [36, 35, 35, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:24:01,415 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:01,605 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-09-11 19:24:01,606 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:01,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:01,606 INFO L85 PathProgramCache]: Analyzing trace with hash 136459151, now seen corresponding path program 41 times [2024-09-11 19:24:01,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:01,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260685726] [2024-09-11 19:24:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:01,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1190 proven. 2382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:02,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260685726] [2024-09-11 19:24:02,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260685726] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375279584] [2024-09-11 19:24:02,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:24:02,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:02,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:02,948 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:02,949 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-11 19:24:03,224 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2024-09-11 19:24:03,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:03,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-11 19:24:03,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1260 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:03,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1260 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:04,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375279584] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:04,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:04,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-09-11 19:24:04,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077515933] [2024-09-11 19:24:04,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:04,175 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 19:24:04,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:04,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 19:24:04,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=750, Invalid=972, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:24:04,176 INFO L87 Difference]: Start difference. First operand 218 states and 221 transitions. Second operand has 42 states, 42 states have (on average 5.714285714285714) internal successors, (240), 41 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:04,613 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2024-09-11 19:24:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-09-11 19:24:04,614 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.714285714285714) internal successors, (240), 41 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2024-09-11 19:24:04,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:04,615 INFO L225 Difference]: With dead ends: 235 [2024-09-11 19:24:04,615 INFO L226 Difference]: Without dead ends: 233 [2024-09-11 19:24:04,616 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 394 SyntacticMatches, 70 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2927 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2226, Invalid=3780, Unknown=0, NotChecked=0, Total=6006 [2024-09-11 19:24:04,616 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 11 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:04,618 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 357 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:24:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-09-11 19:24:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 226. [2024-09-11 19:24:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.0177777777777777) internal successors, (229), 225 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 229 transitions. [2024-09-11 19:24:04,642 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 229 transitions. Word has length 217 [2024-09-11 19:24:04,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:04,642 INFO L474 AbstractCegarLoop]: Abstraction has 226 states and 229 transitions. [2024-09-11 19:24:04,642 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.714285714285714) internal successors, (240), 41 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:04,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 229 transitions. [2024-09-11 19:24:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-09-11 19:24:04,647 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:04,647 INFO L216 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:24:04,667 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:04,847 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:04,848 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:04,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash -465205643, now seen corresponding path program 42 times [2024-09-11 19:24:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910376738] [2024-09-11 19:24:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:04,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 2487 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:06,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:06,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910376738] [2024-09-11 19:24:06,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910376738] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:06,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434797874] [2024-09-11 19:24:06,835 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:24:06,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:06,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:06,836 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:06,838 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-11 19:24:07,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-11 19:24:07,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:07,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-09-11 19:24:07,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 2592 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:09,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 2592 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:10,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434797874] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:10,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:10,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 116 [2024-09-11 19:24:10,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822753335] [2024-09-11 19:24:10,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:10,435 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-09-11 19:24:10,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:10,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-09-11 19:24:10,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3044, Invalid=10296, Unknown=0, NotChecked=0, Total=13340 [2024-09-11 19:24:10,437 INFO L87 Difference]: Start difference. First operand 226 states and 229 transitions. Second operand has 116 states, 116 states have (on average 3.3275862068965516) internal successors, (386), 116 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:12,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:12,652 INFO L93 Difference]: Finished difference Result 635 states and 714 transitions. [2024-09-11 19:24:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-09-11 19:24:12,652 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 3.3275862068965516) internal successors, (386), 116 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2024-09-11 19:24:12,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:12,658 INFO L225 Difference]: With dead ends: 635 [2024-09-11 19:24:12,659 INFO L226 Difference]: Without dead ends: 341 [2024-09-11 19:24:12,662 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 340 SyntacticMatches, 69 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11878 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8630, Invalid=26902, Unknown=0, NotChecked=0, Total=35532 [2024-09-11 19:24:12,669 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 481 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:12,670 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1051 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:24:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-09-11 19:24:12,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 230. [2024-09-11 19:24:12,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.017467248908297) internal successors, (233), 229 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 233 transitions. [2024-09-11 19:24:12,712 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 233 transitions. Word has length 225 [2024-09-11 19:24:12,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:12,712 INFO L474 AbstractCegarLoop]: Abstraction has 230 states and 233 transitions. [2024-09-11 19:24:12,713 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 3.3275862068965516) internal successors, (386), 116 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:12,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 233 transitions. [2024-09-11 19:24:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-09-11 19:24:12,714 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:12,714 INFO L216 NwaCegarLoop]: trace histogram [38, 37, 37, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:24:12,728 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:12,914 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:12,914 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:12,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:12,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1900937473, now seen corresponding path program 43 times [2024-09-11 19:24:12,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:12,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376793626] [2024-09-11 19:24:12,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:12,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3998 backedges. 1332 proven. 2666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376793626] [2024-09-11 19:24:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376793626] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122390990] [2024-09-11 19:24:14,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:24:14,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:14,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:14,235 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:14,236 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-11 19:24:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:14,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-09-11 19:24:14,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3998 backedges. 1406 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:14,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3998 backedges. 1406 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122390990] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:15,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:15,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-09-11 19:24:15,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959019991] [2024-09-11 19:24:15,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:15,628 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-11 19:24:15,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:15,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-11 19:24:15,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=829, Invalid=1063, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:24:15,629 INFO L87 Difference]: Start difference. First operand 230 states and 233 transitions. Second operand has 44 states, 44 states have (on average 5.7272727272727275) internal successors, (252), 43 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:16,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:16,131 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2024-09-11 19:24:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-09-11 19:24:16,131 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.7272727272727275) internal successors, (252), 43 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2024-09-11 19:24:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:16,133 INFO L225 Difference]: With dead ends: 247 [2024-09-11 19:24:16,133 INFO L226 Difference]: Without dead ends: 245 [2024-09-11 19:24:16,134 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 416 SyntacticMatches, 74 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3243 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2463, Invalid=4179, Unknown=0, NotChecked=0, Total=6642 [2024-09-11 19:24:16,134 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 15 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:16,135 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 366 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:24:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-09-11 19:24:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 238. [2024-09-11 19:24:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.0168776371308017) internal successors, (241), 237 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 241 transitions. [2024-09-11 19:24:16,176 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 241 transitions. Word has length 229 [2024-09-11 19:24:16,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:16,176 INFO L474 AbstractCegarLoop]: Abstraction has 238 states and 241 transitions. [2024-09-11 19:24:16,176 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.7272727272727275) internal successors, (252), 43 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:16,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:16,176 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 241 transitions. [2024-09-11 19:24:16,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-11 19:24:16,177 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:16,177 INFO L216 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:24:16,193 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-09-11 19:24:16,381 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-11 19:24:16,382 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:16,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1916083739, now seen corresponding path program 44 times [2024-09-11 19:24:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:16,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54471969] [2024-09-11 19:24:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 2777 proven. 1517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:18,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54471969] [2024-09-11 19:24:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54471969] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084306153] [2024-09-11 19:24:18,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:24:18,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:18,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:18,772 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:18,774 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-11 19:24:19,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:24:19,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:19,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-11 19:24:19,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 2886 proven. 1406 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:24:21,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 2886 proven. 1406 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:24:22,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084306153] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:22,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:22,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78, 78] total 119 [2024-09-11 19:24:22,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410843386] [2024-09-11 19:24:22,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:22,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-09-11 19:24:22,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:22,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-09-11 19:24:22,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3163, Invalid=10879, Unknown=0, NotChecked=0, Total=14042 [2024-09-11 19:24:22,580 INFO L87 Difference]: Start difference. First operand 238 states and 241 transitions. Second operand has 119 states, 119 states have (on average 3.3361344537815127) internal successors, (397), 119 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:24,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:24,090 INFO L93 Difference]: Finished difference Result 511 states and 591 transitions. [2024-09-11 19:24:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-09-11 19:24:24,090 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.3361344537815127) internal successors, (397), 119 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2024-09-11 19:24:24,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:24,092 INFO L225 Difference]: With dead ends: 511 [2024-09-11 19:24:24,092 INFO L226 Difference]: Without dead ends: 354 [2024-09-11 19:24:24,094 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 360 SyntacticMatches, 74 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9171 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=6129, Invalid=18363, Unknown=0, NotChecked=0, Total=24492 [2024-09-11 19:24:24,095 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 321 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:24,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 934 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:24:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-09-11 19:24:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 240. [2024-09-11 19:24:24,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.0167364016736402) internal successors, (243), 239 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 243 transitions. [2024-09-11 19:24:24,122 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 243 transitions. Word has length 237 [2024-09-11 19:24:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:24,122 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 243 transitions. [2024-09-11 19:24:24,123 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.3361344537815127) internal successors, (397), 119 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:24,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 243 transitions. [2024-09-11 19:24:24,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-09-11 19:24:24,123 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:24,123 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:24:24,152 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-09-11 19:24:24,324 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-09-11 19:24:24,324 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:24,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:24,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1054671178, now seen corresponding path program 45 times [2024-09-11 19:24:24,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:24,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229298930] [2024-09-11 19:24:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:24,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2777 proven. 1593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229298930] [2024-09-11 19:24:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229298930] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59056521] [2024-09-11 19:24:26,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:24:26,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:26,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:26,552 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:26,553 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-11 19:24:26,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-11 19:24:26,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:26,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-11 19:24:26,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2888 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:29,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2888 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:30,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59056521] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:30,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:30,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 80] total 121 [2024-09-11 19:24:30,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076577247] [2024-09-11 19:24:30,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:30,644 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-09-11 19:24:30,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:30,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-09-11 19:24:30,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3283, Invalid=11237, Unknown=0, NotChecked=0, Total=14520 [2024-09-11 19:24:30,648 INFO L87 Difference]: Start difference. First operand 240 states and 243 transitions. Second operand has 121 states, 121 states have (on average 3.2975206611570247) internal successors, (399), 121 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:32,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:32,059 INFO L93 Difference]: Finished difference Result 518 states and 600 transitions. [2024-09-11 19:24:32,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-09-11 19:24:32,060 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 3.2975206611570247) internal successors, (399), 121 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2024-09-11 19:24:32,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:32,062 INFO L225 Difference]: With dead ends: 518 [2024-09-11 19:24:32,062 INFO L226 Difference]: Without dead ends: 359 [2024-09-11 19:24:32,063 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 361 SyntacticMatches, 76 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9492 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=6405, Invalid=19035, Unknown=0, NotChecked=0, Total=25440 [2024-09-11 19:24:32,064 INFO L434 NwaCegarLoop]: 81 mSDtfsCounter, 349 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:32,064 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 936 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:24:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-09-11 19:24:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 242. [2024-09-11 19:24:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.016597510373444) internal successors, (245), 241 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 245 transitions. [2024-09-11 19:24:32,095 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 245 transitions. Word has length 239 [2024-09-11 19:24:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:32,095 INFO L474 AbstractCegarLoop]: Abstraction has 242 states and 245 transitions. [2024-09-11 19:24:32,095 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 3.2975206611570247) internal successors, (399), 121 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:32,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 245 transitions. [2024-09-11 19:24:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-09-11 19:24:32,096 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:32,096 INFO L216 NwaCegarLoop]: trace histogram [40, 39, 39, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:24:32,111 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:32,296 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:32,297 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:32,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:32,297 INFO L85 PathProgramCache]: Analyzing trace with hash -203105425, now seen corresponding path program 46 times [2024-09-11 19:24:32,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:32,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587710975] [2024-09-11 19:24:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 1482 proven. 2966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:33,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587710975] [2024-09-11 19:24:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587710975] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:33,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113743649] [2024-09-11 19:24:33,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:24:33,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:33,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:33,819 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:33,820 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-11 19:24:34,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:24:34,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:34,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-09-11 19:24:34,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 1560 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:34,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 1560 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:35,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113743649] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:35,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:35,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-09-11 19:24:35,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950584964] [2024-09-11 19:24:35,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:35,500 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-11 19:24:35,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:35,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-11 19:24:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=912, Invalid=1158, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:24:35,501 INFO L87 Difference]: Start difference. First operand 242 states and 245 transitions. Second operand has 46 states, 46 states have (on average 5.739130434782608) internal successors, (264), 45 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:36,130 INFO L93 Difference]: Finished difference Result 259 states and 263 transitions. [2024-09-11 19:24:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-09-11 19:24:36,130 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.739130434782608) internal successors, (264), 45 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2024-09-11 19:24:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:36,132 INFO L225 Difference]: With dead ends: 259 [2024-09-11 19:24:36,132 INFO L226 Difference]: Without dead ends: 257 [2024-09-11 19:24:36,133 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 438 SyntacticMatches, 78 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3575 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2712, Invalid=4598, Unknown=0, NotChecked=0, Total=7310 [2024-09-11 19:24:36,133 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:36,133 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 361 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:36,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-09-11 19:24:36,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 250. [2024-09-11 19:24:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.0160642570281124) internal successors, (253), 249 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 253 transitions. [2024-09-11 19:24:36,162 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 253 transitions. Word has length 241 [2024-09-11 19:24:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:36,162 INFO L474 AbstractCegarLoop]: Abstraction has 250 states and 253 transitions. [2024-09-11 19:24:36,162 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.739130434782608) internal successors, (264), 45 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:36,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 253 transitions. [2024-09-11 19:24:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-09-11 19:24:36,163 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:36,163 INFO L216 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:24:36,179 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:36,367 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:36,368 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:36,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:36,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1314016853, now seen corresponding path program 47 times [2024-09-11 19:24:36,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:36,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436368122] [2024-09-11 19:24:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:36,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 3083 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:39,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:39,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436368122] [2024-09-11 19:24:39,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436368122] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:39,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689346430] [2024-09-11 19:24:39,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:24:39,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:39,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:39,083 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:39,084 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-11 19:24:39,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2024-09-11 19:24:39,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:39,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-09-11 19:24:39,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 3200 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:41,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 3200 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:43,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689346430] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:43,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:43,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 128 [2024-09-11 19:24:43,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524371736] [2024-09-11 19:24:43,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:43,967 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-09-11 19:24:43,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:43,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-09-11 19:24:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3700, Invalid=12556, Unknown=0, NotChecked=0, Total=16256 [2024-09-11 19:24:43,970 INFO L87 Difference]: Start difference. First operand 250 states and 253 transitions. Second operand has 128 states, 128 states have (on average 3.328125) internal successors, (426), 128 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:46,853 INFO L93 Difference]: Finished difference Result 703 states and 790 transitions. [2024-09-11 19:24:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-09-11 19:24:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 3.328125) internal successors, (426), 128 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2024-09-11 19:24:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:46,856 INFO L225 Difference]: With dead ends: 703 [2024-09-11 19:24:46,856 INFO L226 Difference]: Without dead ends: 377 [2024-09-11 19:24:46,859 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 376 SyntacticMatches, 77 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14560 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=10546, Invalid=32926, Unknown=0, NotChecked=0, Total=43472 [2024-09-11 19:24:46,859 INFO L434 NwaCegarLoop]: 83 mSDtfsCounter, 552 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:46,859 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1158 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:24:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-09-11 19:24:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 254. [2024-09-11 19:24:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.0158102766798418) internal successors, (257), 253 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 257 transitions. [2024-09-11 19:24:46,890 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 257 transitions. Word has length 249 [2024-09-11 19:24:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:46,891 INFO L474 AbstractCegarLoop]: Abstraction has 254 states and 257 transitions. [2024-09-11 19:24:46,891 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 3.328125) internal successors, (426), 128 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:46,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 257 transitions. [2024-09-11 19:24:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-09-11 19:24:46,892 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:46,892 INFO L216 NwaCegarLoop]: trace histogram [42, 41, 41, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:24:46,906 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-09-11 19:24:47,096 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-11 19:24:47,097 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:47,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:47,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1524648159, now seen corresponding path program 48 times [2024-09-11 19:24:47,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:47,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601116499] [2024-09-11 19:24:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:47,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4922 backedges. 1640 proven. 3282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:48,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:48,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601116499] [2024-09-11 19:24:48,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601116499] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:48,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736363786] [2024-09-11 19:24:48,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:24:48,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:48,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:48,772 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:48,774 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-11 19:24:49,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-09-11 19:24:49,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:49,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-11 19:24:49,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4922 backedges. 1722 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:49,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4922 backedges. 1722 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:50,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736363786] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:50,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:50,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-09-11 19:24:50,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225599369] [2024-09-11 19:24:50,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:50,538 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-11 19:24:50,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:50,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-11 19:24:50,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=999, Invalid=1257, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:24:50,539 INFO L87 Difference]: Start difference. First operand 254 states and 257 transitions. Second operand has 48 states, 48 states have (on average 5.75) internal successors, (276), 47 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:51,217 INFO L93 Difference]: Finished difference Result 271 states and 275 transitions. [2024-09-11 19:24:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-09-11 19:24:51,218 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.75) internal successors, (276), 47 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-09-11 19:24:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:51,220 INFO L225 Difference]: With dead ends: 271 [2024-09-11 19:24:51,220 INFO L226 Difference]: Without dead ends: 269 [2024-09-11 19:24:51,221 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 461 SyntacticMatches, 81 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3882 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2973, Invalid=5037, Unknown=0, NotChecked=0, Total=8010 [2024-09-11 19:24:51,221 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 9 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:51,221 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 469 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:51,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-09-11 19:24:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 262. [2024-09-11 19:24:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.0153256704980842) internal successors, (265), 261 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 265 transitions. [2024-09-11 19:24:51,256 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 265 transitions. Word has length 253 [2024-09-11 19:24:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:51,257 INFO L474 AbstractCegarLoop]: Abstraction has 262 states and 265 transitions. [2024-09-11 19:24:51,257 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.75) internal successors, (276), 47 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:51,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 265 transitions. [2024-09-11 19:24:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-11 19:24:51,258 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:51,258 INFO L216 NwaCegarLoop]: trace histogram [43, 42, 42, 42, 42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:24:51,272 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:51,458 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:51,459 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:51,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1954460731, now seen corresponding path program 49 times [2024-09-11 19:24:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:51,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113621462] [2024-09-11 19:24:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:51,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 3405 proven. 1845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:54,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:54,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113621462] [2024-09-11 19:24:54,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113621462] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:54,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954342642] [2024-09-11 19:24:54,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:24:54,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:54,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:54,359 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:54,360 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-11 19:24:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:54,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-11 19:24:54,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 3526 proven. 1722 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:24:57,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 3526 proven. 1722 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:24:58,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954342642] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:58,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:58,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86, 86] total 131 [2024-09-11 19:24:58,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897310337] [2024-09-11 19:24:58,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:58,917 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-11 19:24:58,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-11 19:24:58,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3831, Invalid=13199, Unknown=0, NotChecked=0, Total=17030 [2024-09-11 19:24:58,919 INFO L87 Difference]: Start difference. First operand 262 states and 265 transitions. Second operand has 131 states, 131 states have (on average 3.33587786259542) internal successors, (437), 131 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:00,658 INFO L93 Difference]: Finished difference Result 563 states and 651 transitions. [2024-09-11 19:25:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-09-11 19:25:00,658 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 3.33587786259542) internal successors, (437), 131 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2024-09-11 19:25:00,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:00,660 INFO L225 Difference]: With dead ends: 563 [2024-09-11 19:25:00,660 INFO L226 Difference]: Without dead ends: 390 [2024-09-11 19:25:00,662 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 396 SyntacticMatches, 82 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11147 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=7445, Invalid=22311, Unknown=0, NotChecked=0, Total=29756 [2024-09-11 19:25:00,664 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 483 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:00,664 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 913 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:25:00,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-09-11 19:25:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 264. [2024-09-11 19:25:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.015209125475285) internal successors, (267), 263 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 267 transitions. [2024-09-11 19:25:00,698 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 267 transitions. Word has length 261 [2024-09-11 19:25:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:00,698 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 267 transitions. [2024-09-11 19:25:00,699 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 3.33587786259542) internal successors, (437), 131 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:00,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 267 transitions. [2024-09-11 19:25:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-09-11 19:25:00,699 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:00,700 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:25:00,716 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-09-11 19:25:00,903 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:00,904 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:00,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1493906390, now seen corresponding path program 50 times [2024-09-11 19:25:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:00,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297215582] [2024-09-11 19:25:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:00,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 3405 proven. 1929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:03,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297215582] [2024-09-11 19:25:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297215582] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:03,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190539138] [2024-09-11 19:25:03,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:25:03,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:03,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:03,713 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:03,714 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-11 19:25:04,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:25:04,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:04,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-11 19:25:04,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 1806 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:06,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 1806 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:09,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190539138] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:09,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 45, 45] total 132 [2024-09-11 19:25:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333796901] [2024-09-11 19:25:09,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:09,147 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-09-11 19:25:09,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:09,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-09-11 19:25:09,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=14364, Unknown=0, NotChecked=0, Total=17292 [2024-09-11 19:25:09,148 INFO L87 Difference]: Start difference. First operand 264 states and 267 transitions. Second operand has 132 states, 132 states have (on average 3.977272727272727) internal successors, (525), 132 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:14,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:14,675 INFO L93 Difference]: Finished difference Result 575 states and 666 transitions. [2024-09-11 19:25:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2024-09-11 19:25:14,675 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 3.977272727272727) internal successors, (525), 132 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2024-09-11 19:25:14,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:14,677 INFO L225 Difference]: With dead ends: 575 [2024-09-11 19:25:14,677 INFO L226 Difference]: Without dead ends: 400 [2024-09-11 19:25:14,683 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 439 SyntacticMatches, 86 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49726 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=18355, Invalid=100325, Unknown=0, NotChecked=0, Total=118680 [2024-09-11 19:25:14,684 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 714 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:14,684 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 697 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-11 19:25:14,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-09-11 19:25:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 270. [2024-09-11 19:25:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.0148698884758365) internal successors, (273), 269 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 273 transitions. [2024-09-11 19:25:14,717 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 273 transitions. Word has length 263 [2024-09-11 19:25:14,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:14,717 INFO L474 AbstractCegarLoop]: Abstraction has 270 states and 273 transitions. [2024-09-11 19:25:14,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 3.977272727272727) internal successors, (525), 132 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:14,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:14,718 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 273 transitions. [2024-09-11 19:25:14,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-09-11 19:25:14,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:14,719 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:25:14,733 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-09-11 19:25:14,922 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-09-11 19:25:14,923 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:14,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:14,923 INFO L85 PathProgramCache]: Analyzing trace with hash -928990846, now seen corresponding path program 51 times [2024-09-11 19:25:14,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:14,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365767656] [2024-09-11 19:25:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:14,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3572 proven. 2018 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:17,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:17,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365767656] [2024-09-11 19:25:17,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365767656] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:17,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002259754] [2024-09-11 19:25:17,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:25:17,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:17,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:17,962 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:17,963 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-11 19:25:18,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2024-09-11 19:25:18,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:18,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-11 19:25:18,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3698 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:21,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3698 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:23,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002259754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:23,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:23,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90, 90] total 136 [2024-09-11 19:25:23,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177987800] [2024-09-11 19:25:23,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:23,002 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2024-09-11 19:25:23,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2024-09-11 19:25:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4143, Invalid=14217, Unknown=0, NotChecked=0, Total=18360 [2024-09-11 19:25:23,005 INFO L87 Difference]: Start difference. First operand 270 states and 273 transitions. Second operand has 136 states, 136 states have (on average 3.301470588235294) internal successors, (449), 136 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:24,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:24,920 INFO L93 Difference]: Finished difference Result 583 states and 675 transitions. [2024-09-11 19:25:24,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-09-11 19:25:24,920 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 3.301470588235294) internal successors, (449), 136 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2024-09-11 19:25:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:24,922 INFO L225 Difference]: With dead ends: 583 [2024-09-11 19:25:24,922 INFO L226 Difference]: Without dead ends: 404 [2024-09-11 19:25:24,923 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 406 SyntacticMatches, 86 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12032 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=8105, Invalid=24115, Unknown=0, NotChecked=0, Total=32220 [2024-09-11 19:25:24,924 INFO L434 NwaCegarLoop]: 91 mSDtfsCounter, 429 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:24,924 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1004 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:25:24,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-09-11 19:25:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 272. [2024-09-11 19:25:24,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.014760147601476) internal successors, (275), 271 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 275 transitions. [2024-09-11 19:25:24,962 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 275 transitions. Word has length 269 [2024-09-11 19:25:24,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:24,962 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 275 transitions. [2024-09-11 19:25:24,962 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 3.301470588235294) internal successors, (449), 136 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:24,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 275 transitions. [2024-09-11 19:25:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-09-11 19:25:24,963 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:24,963 INFO L216 NwaCegarLoop]: trace histogram [45, 44, 44, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:25:24,977 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-11 19:25:25,164 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:25,164 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:25,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2006189287, now seen corresponding path program 52 times [2024-09-11 19:25:25,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:25,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160097949] [2024-09-11 19:25:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:25,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 1892 proven. 3786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:27,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160097949] [2024-09-11 19:25:27,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160097949] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183711138] [2024-09-11 19:25:27,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:25:27,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:27,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:27,083 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:27,084 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-11 19:25:27,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:25:27,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:27,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-11 19:25:27,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 1980 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:27,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 1980 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:29,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183711138] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:29,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:29,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-09-11 19:25:29,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364914800] [2024-09-11 19:25:29,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:29,034 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-11 19:25:29,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:29,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-11 19:25:29,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=1413, Unknown=0, NotChecked=0, Total=2550 [2024-09-11 19:25:29,035 INFO L87 Difference]: Start difference. First operand 272 states and 275 transitions. Second operand has 51 states, 51 states have (on average 5.764705882352941) internal successors, (294), 50 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:29,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:29,657 INFO L93 Difference]: Finished difference Result 289 states and 293 transitions. [2024-09-11 19:25:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-09-11 19:25:29,657 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.764705882352941) internal successors, (294), 50 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2024-09-11 19:25:29,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:29,659 INFO L225 Difference]: With dead ends: 289 [2024-09-11 19:25:29,659 INFO L226 Difference]: Without dead ends: 287 [2024-09-11 19:25:29,660 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 494 SyntacticMatches, 87 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4431 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3387, Invalid=5733, Unknown=0, NotChecked=0, Total=9120 [2024-09-11 19:25:29,660 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 15 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:29,660 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 390 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:25:29,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-09-11 19:25:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 280. [2024-09-11 19:25:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.014336917562724) internal successors, (283), 279 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 283 transitions. [2024-09-11 19:25:29,696 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 283 transitions. Word has length 271 [2024-09-11 19:25:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:29,696 INFO L474 AbstractCegarLoop]: Abstraction has 280 states and 283 transitions. [2024-09-11 19:25:29,697 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.764705882352941) internal successors, (294), 50 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:29,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 283 transitions. [2024-09-11 19:25:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-09-11 19:25:29,698 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:29,698 INFO L216 NwaCegarLoop]: trace histogram [46, 45, 45, 45, 45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:25:29,711 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-11 19:25:29,901 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:29,901 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:29,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:29,902 INFO L85 PathProgramCache]: Analyzing trace with hash 685539277, now seen corresponding path program 53 times [2024-09-11 19:25:29,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:29,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775529511] [2024-09-11 19:25:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:29,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 3918 proven. 2112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:32,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:32,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775529511] [2024-09-11 19:25:32,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775529511] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:32,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979850643] [2024-09-11 19:25:32,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:25:32,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:32,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:32,762 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:32,763 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-11 19:25:33,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-11 19:25:33,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:33,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-09-11 19:25:33,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:35,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 4050 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:35,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 4050 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979850643] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:37,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:37,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 143 [2024-09-11 19:25:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019823196] [2024-09-11 19:25:37,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:37,422 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-09-11 19:25:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-09-11 19:25:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4610, Invalid=15696, Unknown=0, NotChecked=0, Total=20306 [2024-09-11 19:25:37,425 INFO L87 Difference]: Start difference. First operand 280 states and 283 transitions. Second operand has 143 states, 143 states have (on average 3.3286713286713288) internal successors, (476), 143 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:40,716 INFO L93 Difference]: Finished difference Result 788 states and 885 transitions. [2024-09-11 19:25:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-09-11 19:25:40,716 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 3.3286713286713288) internal successors, (476), 143 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 279 [2024-09-11 19:25:40,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:40,719 INFO L225 Difference]: With dead ends: 788 [2024-09-11 19:25:40,719 INFO L226 Difference]: Without dead ends: 422 [2024-09-11 19:25:40,723 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 421 SyntacticMatches, 87 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18295 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=13211, Invalid=41311, Unknown=0, NotChecked=0, Total=54522 [2024-09-11 19:25:40,723 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 607 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:40,723 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1322 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:25:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-09-11 19:25:40,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 284. [2024-09-11 19:25:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.0141342756183747) internal successors, (287), 283 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 287 transitions. [2024-09-11 19:25:40,768 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 287 transitions. Word has length 279 [2024-09-11 19:25:40,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:40,768 INFO L474 AbstractCegarLoop]: Abstraction has 284 states and 287 transitions. [2024-09-11 19:25:40,768 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 3.3286713286713288) internal successors, (476), 143 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:40,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 287 transitions. [2024-09-11 19:25:40,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-09-11 19:25:40,770 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:40,770 INFO L216 NwaCegarLoop]: trace histogram [47, 46, 46, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:25:40,784 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-09-11 19:25:40,970 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-09-11 19:25:40,970 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:40,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:40,971 INFO L85 PathProgramCache]: Analyzing trace with hash 431287511, now seen corresponding path program 54 times [2024-09-11 19:25:40,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:40,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868533844] [2024-09-11 19:25:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:40,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6212 backedges. 2070 proven. 4142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:42,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:42,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868533844] [2024-09-11 19:25:42,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868533844] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:42,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693907553] [2024-09-11 19:25:42,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:25:42,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:42,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:42,955 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:42,957 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-11 19:25:43,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2024-09-11 19:25:43,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:43,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-11 19:25:43,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6212 backedges. 2162 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:43,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6212 backedges. 2162 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:45,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693907553] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:45,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:45,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2024-09-11 19:25:45,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133341415] [2024-09-11 19:25:45,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:45,025 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-11 19:25:45,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:45,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-11 19:25:45,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1234, Invalid=1522, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 19:25:45,026 INFO L87 Difference]: Start difference. First operand 284 states and 287 transitions. Second operand has 53 states, 53 states have (on average 5.773584905660377) internal successors, (306), 52 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:45,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:45,796 INFO L93 Difference]: Finished difference Result 301 states and 305 transitions. [2024-09-11 19:25:45,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-09-11 19:25:45,797 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.773584905660377) internal successors, (306), 52 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2024-09-11 19:25:45,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:45,799 INFO L225 Difference]: With dead ends: 301 [2024-09-11 19:25:45,799 INFO L226 Difference]: Without dead ends: 299 [2024-09-11 19:25:45,800 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 516 SyntacticMatches, 91 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4817 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3678, Invalid=6222, Unknown=0, NotChecked=0, Total=9900 [2024-09-11 19:25:45,801 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 15 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:45,801 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 470 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:25:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-09-11 19:25:45,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 292. [2024-09-11 19:25:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.013745704467354) internal successors, (295), 291 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 295 transitions. [2024-09-11 19:25:45,854 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 295 transitions. Word has length 283 [2024-09-11 19:25:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:45,854 INFO L474 AbstractCegarLoop]: Abstraction has 292 states and 295 transitions. [2024-09-11 19:25:45,855 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.773584905660377) internal successors, (306), 52 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:45,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 295 transitions. [2024-09-11 19:25:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-09-11 19:25:45,855 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:45,855 INFO L216 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:25:45,870 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-09-11 19:25:46,059 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:46,059 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:46,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1800304573, now seen corresponding path program 55 times [2024-09-11 19:25:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:46,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509179523] [2024-09-11 19:25:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:46,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 4280 proven. 2300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:49,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:49,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509179523] [2024-09-11 19:25:49,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509179523] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067142257] [2024-09-11 19:25:49,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:25:49,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:49,456 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:49,457 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-11 19:25:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:49,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-11 19:25:49,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 4416 proven. 2162 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:25:52,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 4416 proven. 2162 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:25:54,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067142257] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:54,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:54,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96, 96] total 146 [2024-09-11 19:25:54,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019776881] [2024-09-11 19:25:54,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:54,961 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-09-11 19:25:54,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:54,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-09-11 19:25:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4756, Invalid=16414, Unknown=0, NotChecked=0, Total=21170 [2024-09-11 19:25:54,964 INFO L87 Difference]: Start difference. First operand 292 states and 295 transitions. Second operand has 146 states, 146 states have (on average 3.335616438356164) internal successors, (487), 146 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:57,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:57,151 INFO L93 Difference]: Finished difference Result 628 states and 726 transitions. [2024-09-11 19:25:57,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-09-11 19:25:57,151 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 3.335616438356164) internal successors, (487), 146 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-09-11 19:25:57,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:57,154 INFO L225 Difference]: With dead ends: 628 [2024-09-11 19:25:57,154 INFO L226 Difference]: Without dead ends: 435 [2024-09-11 19:25:57,156 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 441 SyntacticMatches, 92 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13887 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=9270, Invalid=27786, Unknown=0, NotChecked=0, Total=37056 [2024-09-11 19:25:57,156 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 441 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:57,156 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1132 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:25:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-09-11 19:25:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 294. [2024-09-11 19:25:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.0136518771331058) internal successors, (297), 293 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 297 transitions. [2024-09-11 19:25:57,212 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 297 transitions. Word has length 291 [2024-09-11 19:25:57,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:57,212 INFO L474 AbstractCegarLoop]: Abstraction has 294 states and 297 transitions. [2024-09-11 19:25:57,212 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 3.335616438356164) internal successors, (487), 146 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:57,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 297 transitions. [2024-09-11 19:25:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-09-11 19:25:57,213 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:57,214 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:25:57,227 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-09-11 19:25:57,415 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:57,415 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:57,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash -545719966, now seen corresponding path program 56 times [2024-09-11 19:25:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:57,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971173280] [2024-09-11 19:25:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:26:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 4280 proven. 2394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:01,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:26:01,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971173280] [2024-09-11 19:26:01,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971173280] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:26:01,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828333747] [2024-09-11 19:26:01,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:26:01,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:01,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:26:01,134 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:26:01,135 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-11 19:26:01,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:26:01,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:26:01,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-11 19:26:01,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:26:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 2256 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:03,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:26:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 2256 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:08,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828333747] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:26:08,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:26:08,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 50, 50] total 147 [2024-09-11 19:26:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007895009] [2024-09-11 19:26:08,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:26:08,541 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2024-09-11 19:26:08,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:26:08,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2024-09-11 19:26:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3628, Invalid=17834, Unknown=0, NotChecked=0, Total=21462 [2024-09-11 19:26:08,543 INFO L87 Difference]: Start difference. First operand 294 states and 297 transitions. Second operand has 147 states, 147 states have (on average 3.979591836734694) internal successors, (585), 147 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:26:14,790 INFO L93 Difference]: Finished difference Result 640 states and 741 transitions. [2024-09-11 19:26:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 288 states. [2024-09-11 19:26:14,790 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 3.979591836734694) internal successors, (585), 147 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2024-09-11 19:26:14,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:26:14,793 INFO L225 Difference]: With dead ends: 640 [2024-09-11 19:26:14,793 INFO L226 Difference]: Without dead ends: 445 [2024-09-11 19:26:14,798 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 489 SyntacticMatches, 96 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62226 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=22770, Invalid=125070, Unknown=0, NotChecked=0, Total=147840 [2024-09-11 19:26:14,798 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 789 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 3374 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 3651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:26:14,799 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 682 Invalid, 3651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3374 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-11 19:26:14,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-09-11 19:26:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 300. [2024-09-11 19:26:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.0133779264214047) internal successors, (303), 299 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 303 transitions. [2024-09-11 19:26:14,842 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 303 transitions. Word has length 293 [2024-09-11 19:26:14,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:26:14,842 INFO L474 AbstractCegarLoop]: Abstraction has 300 states and 303 transitions. [2024-09-11 19:26:14,842 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 3.979591836734694) internal successors, (585), 147 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:14,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:14,843 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 303 transitions. [2024-09-11 19:26:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-09-11 19:26:14,843 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:14,844 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:26:14,858 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-09-11 19:26:15,044 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-11 19:26:15,044 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:15,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1872534522, now seen corresponding path program 57 times [2024-09-11 19:26:15,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:15,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822604664] [2024-09-11 19:26:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:15,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:26:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4467 proven. 2493 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:26:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822604664] [2024-09-11 19:26:18,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822604664] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:26:18,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124762253] [2024-09-11 19:26:18,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:26:18,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:18,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:26:18,712 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:26:18,715 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-11 19:26:19,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2024-09-11 19:26:19,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:26:19,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-11 19:26:19,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:26:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4608 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:22,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:26:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4608 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:25,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124762253] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:26:25,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:26:25,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 151 [2024-09-11 19:26:25,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075684478] [2024-09-11 19:26:25,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:26:25,075 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2024-09-11 19:26:25,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:26:25,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2024-09-11 19:26:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5103, Invalid=17547, Unknown=0, NotChecked=0, Total=22650 [2024-09-11 19:26:25,079 INFO L87 Difference]: Start difference. First operand 300 states and 303 transitions. Second operand has 151 states, 151 states have (on average 3.3046357615894038) internal successors, (499), 151 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:26:27,633 INFO L93 Difference]: Finished difference Result 648 states and 750 transitions. [2024-09-11 19:26:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-09-11 19:26:27,633 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 3.3046357615894038) internal successors, (499), 151 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2024-09-11 19:26:27,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:26:27,636 INFO L225 Difference]: With dead ends: 648 [2024-09-11 19:26:27,636 INFO L226 Difference]: Without dead ends: 449 [2024-09-11 19:26:27,638 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 451 SyntacticMatches, 96 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14872 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=10005, Invalid=29795, Unknown=0, NotChecked=0, Total=39800 [2024-09-11 19:26:27,639 INFO L434 NwaCegarLoop]: 101 mSDtfsCounter, 592 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:26:27,639 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1293 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:26:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-09-11 19:26:27,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 302. [2024-09-11 19:26:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.0132890365448506) internal successors, (305), 301 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 305 transitions. [2024-09-11 19:26:27,683 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 305 transitions. Word has length 299 [2024-09-11 19:26:27,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:26:27,683 INFO L474 AbstractCegarLoop]: Abstraction has 302 states and 305 transitions. [2024-09-11 19:26:27,684 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 3.3046357615894038) internal successors, (499), 151 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:27,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:27,684 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 305 transitions. [2024-09-11 19:26:27,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-09-11 19:26:27,685 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:27,685 INFO L216 NwaCegarLoop]: trace histogram [50, 49, 49, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:26:27,700 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-11 19:26:27,889 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-11 19:26:27,890 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:27,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash 634497183, now seen corresponding path program 58 times [2024-09-11 19:26:27,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:27,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282805440] [2024-09-11 19:26:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:27,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:26:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7058 backedges. 2352 proven. 4706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:26:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282805440] [2024-09-11 19:26:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282805440] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:26:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615080846] [2024-09-11 19:26:30,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:26:30,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:30,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:26:30,563 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:26:30,564 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-11 19:26:30,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:26:30,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:26:30,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-09-11 19:26:30,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:26:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7058 backedges. 2450 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:31,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:26:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7058 backedges. 2450 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:33,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615080846] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:26:33,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:26:33,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 55 [2024-09-11 19:26:33,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108576454] [2024-09-11 19:26:33,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:26:33,096 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-11 19:26:33,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:26:33,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-11 19:26:33,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1387, Invalid=1693, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 19:26:33,097 INFO L87 Difference]: Start difference. First operand 302 states and 305 transitions. Second operand has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 55 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:26:33,987 INFO L93 Difference]: Finished difference Result 319 states and 323 transitions. [2024-09-11 19:26:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-09-11 19:26:33,988 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 55 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 301 [2024-09-11 19:26:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:26:33,990 INFO L225 Difference]: With dead ends: 319 [2024-09-11 19:26:33,990 INFO L226 Difference]: Without dead ends: 317 [2024-09-11 19:26:33,992 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 548 SyntacticMatches, 98 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5475 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4137, Invalid=6993, Unknown=0, NotChecked=0, Total=11130 [2024-09-11 19:26:33,992 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 11 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:26:33,992 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 418 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:26:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-09-11 19:26:34,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 310. [2024-09-11 19:26:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.0129449838187703) internal successors, (313), 309 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 313 transitions. [2024-09-11 19:26:34,038 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 313 transitions. Word has length 301 [2024-09-11 19:26:34,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:26:34,038 INFO L474 AbstractCegarLoop]: Abstraction has 310 states and 313 transitions. [2024-09-11 19:26:34,038 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 55 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:34,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:34,039 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 313 transitions. [2024-09-11 19:26:34,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-09-11 19:26:34,039 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:34,040 INFO L216 NwaCegarLoop]: trace histogram [51, 50, 50, 50, 50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:26:34,054 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-09-11 19:26:34,243 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:34,244 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:34,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:34,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1844898693, now seen corresponding path program 59 times [2024-09-11 19:26:34,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:34,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685716246] [2024-09-11 19:26:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:34,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:26:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 4853 proven. 2597 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:38,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:26:38,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685716246] [2024-09-11 19:26:38,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685716246] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:26:38,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521290110] [2024-09-11 19:26:38,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:26:38,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:38,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:26:38,521 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:26:38,522 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-11 19:26:38,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2024-09-11 19:26:38,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:26:38,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-09-11 19:26:38,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:26:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 5000 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:42,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:26:44,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 5000 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:44,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521290110] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:26:44,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:26:44,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 158 [2024-09-11 19:26:44,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908781720] [2024-09-11 19:26:44,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:26:44,587 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2024-09-11 19:26:44,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:26:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2024-09-11 19:26:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5620, Invalid=19186, Unknown=0, NotChecked=0, Total=24806 [2024-09-11 19:26:44,590 INFO L87 Difference]: Start difference. First operand 310 states and 313 transitions. Second operand has 158 states, 158 states have (on average 3.329113924050633) internal successors, (526), 158 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:26:48,780 INFO L93 Difference]: Finished difference Result 873 states and 980 transitions. [2024-09-11 19:26:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2024-09-11 19:26:48,781 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 3.329113924050633) internal successors, (526), 158 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 309 [2024-09-11 19:26:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:26:48,784 INFO L225 Difference]: With dead ends: 873 [2024-09-11 19:26:48,784 INFO L226 Difference]: Without dead ends: 467 [2024-09-11 19:26:48,787 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 820 GetRequests, 466 SyntacticMatches, 97 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22455 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=16176, Invalid=50646, Unknown=0, NotChecked=0, Total=66822 [2024-09-11 19:26:48,787 INFO L434 NwaCegarLoop]: 103 mSDtfsCounter, 651 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:26:48,787 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1850 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 19:26:48,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-09-11 19:26:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 314. [2024-09-11 19:26:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.012779552715655) internal successors, (317), 313 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 317 transitions. [2024-09-11 19:26:48,834 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 317 transitions. Word has length 309 [2024-09-11 19:26:48,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:26:48,834 INFO L474 AbstractCegarLoop]: Abstraction has 314 states and 317 transitions. [2024-09-11 19:26:48,835 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 3.329113924050633) internal successors, (526), 158 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:48,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:48,835 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 317 transitions. [2024-09-11 19:26:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-09-11 19:26:48,836 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:48,836 INFO L216 NwaCegarLoop]: trace histogram [52, 51, 51, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:26:48,851 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-09-11 19:26:49,036 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:49,036 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:49,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:49,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1126853391, now seen corresponding path program 60 times [2024-09-11 19:26:49,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:49,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475269783] [2024-09-11 19:26:49,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:49,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:26:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7652 backedges. 2550 proven. 5102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:51,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:26:51,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475269783] [2024-09-11 19:26:51,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475269783] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:26:51,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341565336] [2024-09-11 19:26:51,525 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:26:51,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:51,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:26:51,526 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:26:51,527 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-11 19:26:51,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-09-11 19:26:51,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:26:51,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-09-11 19:26:51,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:26:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7652 backedges. 2652 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:52,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:26:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7652 backedges. 2652 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:53,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341565336] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:26:53,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:26:53,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 57 [2024-09-11 19:26:53,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847636754] [2024-09-11 19:26:53,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:26:53,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-11 19:26:53,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:26:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-11 19:26:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1494, Invalid=1812, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 19:26:53,839 INFO L87 Difference]: Start difference. First operand 314 states and 317 transitions. Second operand has 58 states, 58 states have (on average 5.793103448275862) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:26:54,740 INFO L93 Difference]: Finished difference Result 331 states and 335 transitions. [2024-09-11 19:26:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-09-11 19:26:54,740 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.793103448275862) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2024-09-11 19:26:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:26:54,743 INFO L225 Difference]: With dead ends: 331 [2024-09-11 19:26:54,743 INFO L226 Difference]: Without dead ends: 329 [2024-09-11 19:26:54,744 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 570 SyntacticMatches, 102 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5903 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4458, Invalid=7532, Unknown=0, NotChecked=0, Total=11990 [2024-09-11 19:26:54,744 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 9 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:26:54,745 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 465 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:26:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-09-11 19:26:54,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 322. [2024-09-11 19:26:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.0124610591900312) internal successors, (325), 321 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 325 transitions. [2024-09-11 19:26:54,795 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 325 transitions. Word has length 313 [2024-09-11 19:26:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:26:54,795 INFO L474 AbstractCegarLoop]: Abstraction has 322 states and 325 transitions. [2024-09-11 19:26:54,795 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.793103448275862) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:54,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:54,796 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 325 transitions. [2024-09-11 19:26:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-09-11 19:26:54,796 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:54,797 INFO L216 NwaCegarLoop]: trace histogram [53, 52, 52, 52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:26:54,811 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-09-11 19:26:54,997 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-09-11 19:26:54,997 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:54,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:54,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1834892789, now seen corresponding path program 61 times [2024-09-11 19:26:54,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:54,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842256651] [2024-09-11 19:26:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:54,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat