./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/theatreSquare.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/theatreSquare.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 --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 19:34:31,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:34:31,291 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:34:31,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:34:31,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:34:31,316 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:34:31,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:34:31,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:34:31,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:34:31,318 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:34:31,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:34:31,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:34:31,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:34:31,320 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:34:31,320 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:34:31,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:34:31,321 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:34:31,321 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:34:31,321 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:34:31,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:34:31,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:34:31,325 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:34:31,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:34:31,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:34:31,326 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:34:31,326 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:34:31,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:34:31,327 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:34:31,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:34:31,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:34:31,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:34:31,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:34:31,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:34:31,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:34:31,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:34:31,331 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:34:31,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:34:31,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:34:31,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:34:31,332 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:34:31,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:34:31,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:34:31,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:34:31,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:34:31,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:34:31,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:34:31,620 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:34:31,621 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:34:31,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-09-11 19:34:33,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:34:33,248 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:34:33,249 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-09-11 19:34:33,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/ebe87550d/090f5300b1a449bbaf782917c005d2a1/FLAG26d783bd9 [2024-09-11 19:34:33,267 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/ebe87550d/090f5300b1a449bbaf782917c005d2a1 [2024-09-11 19:34:33,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:34:33,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:34:33,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:34:33,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:34:33,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:34:33,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3092c962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33, skipping insertion in model container [2024-09-11 19:34:33,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,302 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:34:33,441 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/loops-crafted-1/theatreSquare.c[370,383] [2024-09-11 19:34:33,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:34:33,473 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:34:33,481 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/loops-crafted-1/theatreSquare.c[370,383] [2024-09-11 19:34:33,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:34:33,504 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:34:33,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33 WrapperNode [2024-09-11 19:34:33,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:34:33,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:34:33,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:34:33,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:34:33,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,520 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,546 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 103 [2024-09-11 19:34:33,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:34:33,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:34:33,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:34:33,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:34:33,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,561 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,574 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 19:34:33,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:34:33,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:34:33,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:34:33,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:34:33,601 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (1/1) ... [2024-09-11 19:34:33,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:34:33,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:33,632 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 19:34:33,635 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 19:34:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:34:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:34:33,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:34:33,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:34:33,747 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:34:33,748 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:34:33,895 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-09-11 19:34:33,895 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:34:33,924 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:34:33,924 INFO L318 CfgBuilder]: Removed 6 assume(true) statements. [2024-09-11 19:34:33,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:34:33 BoogieIcfgContainer [2024-09-11 19:34:33,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:34:33,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:34:33,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:34:33,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:34:33,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:34:33" (1/3) ... [2024-09-11 19:34:33,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640519ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:34:33, skipping insertion in model container [2024-09-11 19:34:33,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:34:33" (2/3) ... [2024-09-11 19:34:33,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640519ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:34:33, skipping insertion in model container [2024-09-11 19:34:33,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:34:33" (3/3) ... [2024-09-11 19:34:33,938 INFO L112 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2024-09-11 19:34:33,950 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:34:33,950 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:34:34,011 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:34:34,017 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;@4200e741, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:34:34,017 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:34:34,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 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 19:34:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-11 19:34:34,042 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:34,043 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-11 19:34:34,043 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:34,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:34,048 INFO L85 PathProgramCache]: Analyzing trace with hash 126370538, now seen corresponding path program 1 times [2024-09-11 19:34:34,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:34,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568265855] [2024-09-11 19:34:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:34,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:34,299 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 19:34:34,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:34,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568265855] [2024-09-11 19:34:34,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568265855] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:34:34,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:34:34,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:34:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031577065] [2024-09-11 19:34:34,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:34:34,309 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:34:34,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:34,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:34:34,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:34:34,328 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 19:34:34,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:34,380 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2024-09-11 19:34:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:34:34,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-09-11 19:34:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:34,390 INFO L225 Difference]: With dead ends: 35 [2024-09-11 19:34:34,391 INFO L226 Difference]: Without dead ends: 16 [2024-09-11 19:34:34,393 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:34:34,398 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:34,399 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-11 19:34:34,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-11 19:34:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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 19:34:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2024-09-11 19:34:34,430 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 5 [2024-09-11 19:34:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:34,430 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-09-11 19:34:34,431 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 19:34:34,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2024-09-11 19:34:34,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-11 19:34:34,432 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:34,433 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:34,433 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:34:34,433 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:34,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1401987001, now seen corresponding path program 1 times [2024-09-11 19:34:34,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:34,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434069883] [2024-09-11 19:34:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:34,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:34,668 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 19:34:34,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:34,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434069883] [2024-09-11 19:34:34,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434069883] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:34:34,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:34:34,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-11 19:34:34,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576559972] [2024-09-11 19:34:34,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:34:34,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-11 19:34:34,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-11 19:34:34,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:34:34,676 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 19:34:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:34,764 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-09-11 19:34:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:34:34,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 19:34:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:34,765 INFO L225 Difference]: With dead ends: 30 [2024-09-11 19:34:34,766 INFO L226 Difference]: Without dead ends: 25 [2024-09-11 19:34:34,767 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:34:34,768 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:34,769 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 80 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-11 19:34:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-09-11 19:34:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 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 19:34:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2024-09-11 19:34:34,779 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 15 [2024-09-11 19:34:34,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:34,779 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2024-09-11 19:34:34,780 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 19:34:34,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2024-09-11 19:34:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-11 19:34:34,783 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:34,783 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:34,783 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:34:34,783 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:34,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:34,784 INFO L85 PathProgramCache]: Analyzing trace with hash 541116398, now seen corresponding path program 1 times [2024-09-11 19:34:34,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:34,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825942854] [2024-09-11 19:34:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:34:34,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:34,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825942854] [2024-09-11 19:34:34,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825942854] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:34:34,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:34:34,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-11 19:34:34,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926571441] [2024-09-11 19:34:34,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:34:34,896 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:34:34,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:34,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:34:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:34:34,898 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 19:34:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:34,924 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2024-09-11 19:34:34,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:34:34,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2024-09-11 19:34:34,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:34,925 INFO L225 Difference]: With dead ends: 36 [2024-09-11 19:34:34,926 INFO L226 Difference]: Without dead ends: 27 [2024-09-11 19:34:34,926 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:34:34,927 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:34,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:34,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-11 19:34:34,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-11 19:34:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 19:34:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2024-09-11 19:34:34,937 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 16 [2024-09-11 19:34:34,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:34,941 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2024-09-11 19:34:34,941 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 19:34:34,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2024-09-11 19:34:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-11 19:34:34,942 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:34,942 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:34,942 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-11 19:34:34,942 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:34,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:34,943 INFO L85 PathProgramCache]: Analyzing trace with hash -180343911, now seen corresponding path program 1 times [2024-09-11 19:34:34,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:34,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967798440] [2024-09-11 19:34:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:34,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:34:35,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:35,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967798440] [2024-09-11 19:34:35,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967798440] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:34:35,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:34:35,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-11 19:34:35,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640662396] [2024-09-11 19:34:35,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:34:35,024 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:34:35,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:35,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:34:35,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:34:35,025 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 19:34:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:35,054 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2024-09-11 19:34:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:34:35,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2024-09-11 19:34:35,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:35,055 INFO L225 Difference]: With dead ends: 46 [2024-09-11 19:34:35,055 INFO L226 Difference]: Without dead ends: 31 [2024-09-11 19:34:35,055 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:34:35,058 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:35,058 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-11 19:34:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-11 19:34:35,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 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 19:34:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2024-09-11 19:34:35,070 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 16 [2024-09-11 19:34:35,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:35,071 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2024-09-11 19:34:35,071 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 19:34:35,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,072 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2024-09-11 19:34:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-11 19:34:35,073 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:35,073 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:35,073 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-11 19:34:35,075 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:35,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,075 INFO L85 PathProgramCache]: Analyzing trace with hash 668508425, now seen corresponding path program 1 times [2024-09-11 19:34:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:35,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953873607] [2024-09-11 19:34:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:35,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:35,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953873607] [2024-09-11 19:34:35,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953873607] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:34:35,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:34:35,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:34:35,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833519561] [2024-09-11 19:34:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:34:35,154 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:34:35,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:35,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:34:35,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:34:35,155 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 19:34:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:35,175 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2024-09-11 19:34:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:34:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) Word has length 17 [2024-09-11 19:34:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:35,177 INFO L225 Difference]: With dead ends: 58 [2024-09-11 19:34:35,177 INFO L226 Difference]: Without dead ends: 33 [2024-09-11 19:34:35,177 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:34:35,178 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:35,178 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-11 19:34:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-11 19:34:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 states have internal predecessors, (45), 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 19:34:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2024-09-11 19:34:35,188 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 17 [2024-09-11 19:34:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:35,189 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2024-09-11 19:34:35,189 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 19:34:35,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2024-09-11 19:34:35,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-11 19:34:35,191 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:35,191 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:35,191 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-11 19:34:35,191 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:35,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash 566072616, now seen corresponding path program 1 times [2024-09-11 19:34:35,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:35,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774819514] [2024-09-11 19:34:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:35,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:34:35,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774819514] [2024-09-11 19:34:35,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774819514] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:34:35,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:34:35,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:34:35,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297745538] [2024-09-11 19:34:35,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:34:35,278 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:34:35,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:35,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:34:35,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:34:35,279 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19:34:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:35,296 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2024-09-11 19:34:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:34:35,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2024-09-11 19:34:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:35,298 INFO L225 Difference]: With dead ends: 45 [2024-09-11 19:34:35,298 INFO L226 Difference]: Without dead ends: 29 [2024-09-11 19:34:35,298 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:34:35,299 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:35,299 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-11 19:34:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-11 19:34:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 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 19:34:35,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2024-09-11 19:34:35,306 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 18 [2024-09-11 19:34:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:35,306 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2024-09-11 19:34:35,306 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19:34:35,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,306 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-09-11 19:34:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-11 19:34:35,307 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:35,307 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:35,307 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-11 19:34:35,307 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:35,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1647246806, now seen corresponding path program 1 times [2024-09-11 19:34:35,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:35,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352851995] [2024-09-11 19:34:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:35,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:34:35,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:35,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352851995] [2024-09-11 19:34:35,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352851995] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:34:35,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:34:35,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-11 19:34:35,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191290877] [2024-09-11 19:34:35,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:34:35,367 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:34:35,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:35,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:34:35,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:34:35,368 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 19:34:35,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:35,387 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2024-09-11 19:34:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:34:35,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2024-09-11 19:34:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:35,388 INFO L225 Difference]: With dead ends: 34 [2024-09-11 19:34:35,388 INFO L226 Difference]: Without dead ends: 26 [2024-09-11 19:34:35,388 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:34:35,389 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:35,389 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-11 19:34:35,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-11 19:34:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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 19:34:35,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2024-09-11 19:34:35,394 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 18 [2024-09-11 19:34:35,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:35,394 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2024-09-11 19:34:35,394 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 19:34:35,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,394 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2024-09-11 19:34:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-11 19:34:35,395 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:35,395 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:35,395 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-11 19:34:35,395 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:35,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1855808360, now seen corresponding path program 1 times [2024-09-11 19:34:35,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:35,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823360555] [2024-09-11 19:34:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:35,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:34:35,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823360555] [2024-09-11 19:34:35,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823360555] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259386428] [2024-09-11 19:34:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:35,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:35,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:35,507 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 19:34:35,510 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 19:34:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:35,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:34:35,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:34:35,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:34:35,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259386428] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:34:35,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 19:34:35,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-11 19:34:35,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988176837] [2024-09-11 19:34:35,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:34:35,633 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:34:35,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:35,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:34:35,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:34:35,634 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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 19:34:35,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:35,656 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-09-11 19:34:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:34:35,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) Word has length 19 [2024-09-11 19:34:35,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:35,657 INFO L225 Difference]: With dead ends: 32 [2024-09-11 19:34:35,657 INFO L226 Difference]: Without dead ends: 20 [2024-09-11 19:34:35,657 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:34:35,658 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:35,658 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-11 19:34:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-09-11 19:34:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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 19:34:35,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-09-11 19:34:35,665 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 19 [2024-09-11 19:34:35,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:35,665 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-09-11 19:34:35,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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 19:34:35,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,666 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-09-11 19:34:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-11 19:34:35,666 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:35,666 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:35,688 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 19:34:35,874 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:35,875 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:35,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2094554387, now seen corresponding path program 1 times [2024-09-11 19:34:35,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:35,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312945885] [2024-09-11 19:34:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:35,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:35,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:35,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312945885] [2024-09-11 19:34:35,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312945885] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:34:35,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:34:35,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-11 19:34:35,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315119159] [2024-09-11 19:34:35,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:34:35,930 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:34:35,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:35,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:34:35,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:34:35,931 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19:34:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:35,946 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-09-11 19:34:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:34:35,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) Word has length 19 [2024-09-11 19:34:35,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:35,947 INFO L225 Difference]: With dead ends: 28 [2024-09-11 19:34:35,947 INFO L226 Difference]: Without dead ends: 21 [2024-09-11 19:34:35,948 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:34:35,948 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:35,949 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:35,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-11 19:34:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-11 19:34:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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 19:34:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-09-11 19:34:35,953 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 19 [2024-09-11 19:34:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:35,953 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-09-11 19:34:35,953 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19:34:35,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-09-11 19:34:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-11 19:34:35,954 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:35,955 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:35,955 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-11 19:34:35,955 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:35,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1720419291, now seen corresponding path program 1 times [2024-09-11 19:34:35,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:35,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592519178] [2024-09-11 19:34:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:35,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:36,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:36,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592519178] [2024-09-11 19:34:36,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592519178] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160082018] [2024-09-11 19:34:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:36,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:36,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:36,010 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 19:34:36,011 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 19:34:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:36,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:34:36,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:36,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:34:36,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160082018] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:34:36,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 19:34:36,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-11 19:34:36,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676267918] [2024-09-11 19:34:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:34:36,104 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:34:36,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:36,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:34:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:34:36,105 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 19:34:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:36,122 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-09-11 19:34:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:34:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-09-11 19:34:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:36,124 INFO L225 Difference]: With dead ends: 27 [2024-09-11 19:34:36,124 INFO L226 Difference]: Without dead ends: 22 [2024-09-11 19:34:36,124 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:34:36,125 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:36,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-11 19:34:36,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-11 19:34:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 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 19:34:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-09-11 19:34:36,131 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 20 [2024-09-11 19:34:36,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:36,131 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-09-11 19:34:36,131 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 19:34:36,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:36,131 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-09-11 19:34:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-11 19:34:36,132 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:36,132 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:36,148 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-11 19:34:36,336 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-11 19:34:36,337 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:36,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:36,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1822582796, now seen corresponding path program 1 times [2024-09-11 19:34:36,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:36,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464868536] [2024-09-11 19:34:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:36,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:36,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:36,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464868536] [2024-09-11 19:34:36,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464868536] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:36,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534822820] [2024-09-11 19:34:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:36,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:36,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:36,564 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 19:34:36,566 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 19:34:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:36,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-11 19:34:36,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:36,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:36,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534822820] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:36,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:36,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2024-09-11 19:34:36,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38225300] [2024-09-11 19:34:36,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:36,911 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-11 19:34:36,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-11 19:34:36,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:34:36,912 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 19:34:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:37,067 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2024-09-11 19:34:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 19:34:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 21 [2024-09-11 19:34:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:37,069 INFO L225 Difference]: With dead ends: 43 [2024-09-11 19:34:37,069 INFO L226 Difference]: Without dead ends: 38 [2024-09-11 19:34:37,069 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:34:37,070 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:37,070 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 165 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-11 19:34:37,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2024-09-11 19:34:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 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 19:34:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-09-11 19:34:37,077 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 21 [2024-09-11 19:34:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:37,077 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-09-11 19:34:37,077 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 19:34:37,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-09-11 19:34:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-11 19:34:37,078 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:37,078 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:37,095 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-11 19:34:37,279 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-11 19:34:37,280 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:37,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:37,281 INFO L85 PathProgramCache]: Analyzing trace with hash 110216570, now seen corresponding path program 2 times [2024-09-11 19:34:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:37,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034521255] [2024-09-11 19:34:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:37,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034521255] [2024-09-11 19:34:37,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034521255] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487650306] [2024-09-11 19:34:37,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:34:37,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:37,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:37,434 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 19:34:37,436 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 19:34:37,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:34:37,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:37,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 19:34:37,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:37,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:37,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487650306] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:37,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:37,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-11 19:34:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770088663] [2024-09-11 19:34:37,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:37,665 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 19:34:37,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 19:34:37,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:34:37,666 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 19:34:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:37,741 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2024-09-11 19:34:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:34:37,741 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 22 [2024-09-11 19:34:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:37,742 INFO L225 Difference]: With dead ends: 48 [2024-09-11 19:34:37,742 INFO L226 Difference]: Without dead ends: 39 [2024-09-11 19:34:37,743 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:34:37,743 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:37,743 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 85 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-11 19:34:37,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-11 19:34:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 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 19:34:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-09-11 19:34:37,751 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 22 [2024-09-11 19:34:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:37,751 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-09-11 19:34:37,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 19:34:37,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-09-11 19:34:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-11 19:34:37,752 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:37,753 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:37,769 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-11 19:34:37,956 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:37,957 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:37,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash 694684155, now seen corresponding path program 3 times [2024-09-11 19:34:37,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:37,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810237697] [2024-09-11 19:34:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:37,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:38,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:38,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810237697] [2024-09-11 19:34:38,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810237697] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:38,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141557884] [2024-09-11 19:34:38,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:34:38,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:38,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:38,019 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 19:34:38,020 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 19:34:38,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-11 19:34:38,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:38,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-11 19:34:38,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:38,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:38,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141557884] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:38,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:38,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-09-11 19:34:38,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480765208] [2024-09-11 19:34:38,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:38,155 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 19:34:38,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:38,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 19:34:38,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:34:38,156 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 19:34:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:38,186 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2024-09-11 19:34:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:34:38,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 22 [2024-09-11 19:34:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:38,187 INFO L225 Difference]: With dead ends: 60 [2024-09-11 19:34:38,187 INFO L226 Difference]: Without dead ends: 49 [2024-09-11 19:34:38,189 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:34:38,189 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:38,190 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-11 19:34:38,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-09-11 19:34:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 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 19:34:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2024-09-11 19:34:38,201 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 22 [2024-09-11 19:34:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:38,202 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2024-09-11 19:34:38,202 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 19:34:38,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2024-09-11 19:34:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-11 19:34:38,204 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:38,204 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:38,221 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 19:34:38,408 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-11 19:34:38,409 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:38,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash -752822738, now seen corresponding path program 4 times [2024-09-11 19:34:38,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:38,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557825327] [2024-09-11 19:34:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:38,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:38,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:38,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557825327] [2024-09-11 19:34:38,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557825327] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:38,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147815185] [2024-09-11 19:34:38,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:34:38,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:38,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:38,464 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 19:34:38,465 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 19:34:38,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:34:38,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:38,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-11 19:34:38,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:38,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147815185] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:38,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:38,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-09-11 19:34:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368978501] [2024-09-11 19:34:38,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:38,594 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 19:34:38,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 19:34:38,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:34:38,594 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 19:34:38,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:38,631 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2024-09-11 19:34:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:34:38,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 22 [2024-09-11 19:34:38,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:38,632 INFO L225 Difference]: With dead ends: 88 [2024-09-11 19:34:38,632 INFO L226 Difference]: Without dead ends: 59 [2024-09-11 19:34:38,632 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:34:38,632 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:38,633 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-11 19:34:38,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-09-11 19:34:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 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 19:34:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2024-09-11 19:34:38,647 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 22 [2024-09-11 19:34:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:38,648 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2024-09-11 19:34:38,648 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 19:34:38,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:38,648 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2024-09-11 19:34:38,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-11 19:34:38,649 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:38,649 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:38,665 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 19:34:38,853 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-11 19:34:38,854 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:38,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash 38970029, now seen corresponding path program 5 times [2024-09-11 19:34:38,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:38,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440281027] [2024-09-11 19:34:38,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:38,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:38,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440281027] [2024-09-11 19:34:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440281027] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717718780] [2024-09-11 19:34:38,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:34:38,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:38,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:38,951 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 19:34:38,953 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 19:34:39,011 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:34:39,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:39,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 19:34:39,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:39,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:39,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717718780] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:39,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:39,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-11 19:34:39,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062884023] [2024-09-11 19:34:39,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:39,182 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 19:34:39,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:39,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 19:34:39,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:34:39,183 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 19:34:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:39,288 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2024-09-11 19:34:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:34:39,289 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 22 [2024-09-11 19:34:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:39,289 INFO L225 Difference]: With dead ends: 72 [2024-09-11 19:34:39,290 INFO L226 Difference]: Without dead ends: 61 [2024-09-11 19:34:39,291 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:34:39,291 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:39,292 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:39,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-11 19:34:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-09-11 19:34:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 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 19:34:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2024-09-11 19:34:39,307 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 22 [2024-09-11 19:34:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:39,307 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2024-09-11 19:34:39,307 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 19:34:39,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:39,307 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2024-09-11 19:34:39,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:34:39,308 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:39,308 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:39,325 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 19:34:39,512 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-11 19:34:39,513 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:39,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:39,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1294635326, now seen corresponding path program 6 times [2024-09-11 19:34:39,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:39,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202660311] [2024-09-11 19:34:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:39,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:39,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:39,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202660311] [2024-09-11 19:34:39,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202660311] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:39,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180102705] [2024-09-11 19:34:39,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:34:39,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:39,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:39,630 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 19:34:39,631 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 19:34:39,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-09-11 19:34:39,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:39,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 19:34:39,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:39,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180102705] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:39,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-11 19:34:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132993528] [2024-09-11 19:34:39,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:39,818 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 19:34:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 19:34:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:34:39,818 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 19:34:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:39,896 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2024-09-11 19:34:39,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:34:39,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 19:34:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:39,897 INFO L225 Difference]: With dead ends: 84 [2024-09-11 19:34:39,897 INFO L226 Difference]: Without dead ends: 61 [2024-09-11 19:34:39,898 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:34:39,898 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:39,899 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-11 19:34:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-09-11 19:34:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 60 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 19:34:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2024-09-11 19:34:39,911 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 23 [2024-09-11 19:34:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:39,911 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2024-09-11 19:34:39,911 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 19:34:39,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2024-09-11 19:34:39,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:34:39,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:39,913 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:39,931 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-11 19:34:40,113 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:40,114 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:40,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash 652795641, now seen corresponding path program 7 times [2024-09-11 19:34:40,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:40,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506351307] [2024-09-11 19:34:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:40,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:40,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:40,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506351307] [2024-09-11 19:34:40,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506351307] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:40,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001340583] [2024-09-11 19:34:40,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:34:40,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:40,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:40,326 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 19:34:40,327 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 19:34:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:40,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-11 19:34:40,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:40,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:40,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001340583] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:40,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:40,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-09-11 19:34:40,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754082596] [2024-09-11 19:34:40,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:40,627 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 19:34:40,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 19:34:40,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:34:40,628 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 19:34:40,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:40,853 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2024-09-11 19:34:40,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:34:40,853 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 19:34:40,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:40,854 INFO L225 Difference]: With dead ends: 97 [2024-09-11 19:34:40,854 INFO L226 Difference]: Without dead ends: 89 [2024-09-11 19:34:40,855 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:34:40,855 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:40,855 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 265 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:40,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-11 19:34:40,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2024-09-11 19:34:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 79 states have internal predecessors, (101), 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 19:34:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2024-09-11 19:34:40,872 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 23 [2024-09-11 19:34:40,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:40,872 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2024-09-11 19:34:40,872 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 19:34:40,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2024-09-11 19:34:40,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:34:40,873 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:40,873 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:40,892 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 19:34:41,074 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-11 19:34:41,074 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:41,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1360307614, now seen corresponding path program 8 times [2024-09-11 19:34:41,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:41,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949330868] [2024-09-11 19:34:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:41,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-11 19:34:41,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:41,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949330868] [2024-09-11 19:34:41,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949330868] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:41,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449609100] [2024-09-11 19:34:41,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:34:41,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:41,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:41,202 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 19:34:41,204 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 19:34:41,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:34:41,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:41,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 19:34:41,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:41,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:41,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449609100] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:41,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:41,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-09-11 19:34:41,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991387703] [2024-09-11 19:34:41,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:41,408 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:34:41,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:41,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:34:41,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:34:41,409 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 19:34:41,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:41,492 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2024-09-11 19:34:41,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:34:41,492 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 19:34:41,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:41,493 INFO L225 Difference]: With dead ends: 92 [2024-09-11 19:34:41,493 INFO L226 Difference]: Without dead ends: 78 [2024-09-11 19:34:41,493 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:34:41,493 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:41,494 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 149 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:41,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-11 19:34:41,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-09-11 19:34:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 77 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 19:34:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2024-09-11 19:34:41,505 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 23 [2024-09-11 19:34:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:41,505 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2024-09-11 19:34:41,505 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 19:34:41,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2024-09-11 19:34:41,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-11 19:34:41,506 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:41,506 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:41,522 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 19:34:41,706 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-11 19:34:41,707 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:41,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1793446867, now seen corresponding path program 9 times [2024-09-11 19:34:41,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:41,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809113531] [2024-09-11 19:34:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:41,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:41,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809113531] [2024-09-11 19:34:41,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809113531] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391282459] [2024-09-11 19:34:41,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:34:41,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:41,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:41,844 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 19:34:41,845 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 19:34:41,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:34:41,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:41,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:34:41,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:42,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:42,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391282459] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:42,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:42,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-09-11 19:34:42,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979177699] [2024-09-11 19:34:42,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:42,188 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 19:34:42,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 19:34:42,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:34:42,193 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 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 19:34:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:42,359 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2024-09-11 19:34:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 19:34:42,360 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 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 24 [2024-09-11 19:34:42,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:42,360 INFO L225 Difference]: With dead ends: 101 [2024-09-11 19:34:42,361 INFO L226 Difference]: Without dead ends: 79 [2024-09-11 19:34:42,361 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:34:42,361 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:42,362 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 136 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-11 19:34:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2024-09-11 19:34:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 74 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 19:34:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 93 transitions. [2024-09-11 19:34:42,375 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 93 transitions. Word has length 24 [2024-09-11 19:34:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:42,376 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 93 transitions. [2024-09-11 19:34:42,376 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 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 19:34:42,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 93 transitions. [2024-09-11 19:34:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-11 19:34:42,377 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:42,377 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:42,393 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 19:34:42,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:42,581 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:42,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash 292877658, now seen corresponding path program 10 times [2024-09-11 19:34:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:42,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171077986] [2024-09-11 19:34:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:42,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:42,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171077986] [2024-09-11 19:34:42,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171077986] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:42,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064547987] [2024-09-11 19:34:42,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:34:42,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:42,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:42,703 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 19:34:42,705 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 19:34:42,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:34:42,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:42,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:34:42,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:42,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:43,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064547987] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:43,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:43,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-09-11 19:34:43,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775924303] [2024-09-11 19:34:43,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:43,022 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 19:34:43,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:43,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 19:34:43,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:34:43,022 INFO L87 Difference]: Start difference. First operand 75 states and 93 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 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 19:34:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:43,196 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2024-09-11 19:34:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 19:34:43,197 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 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 24 [2024-09-11 19:34:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:43,197 INFO L225 Difference]: With dead ends: 88 [2024-09-11 19:34:43,197 INFO L226 Difference]: Without dead ends: 77 [2024-09-11 19:34:43,198 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:34:43,199 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:43,199 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:43,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-11 19:34:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-09-11 19:34:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.25) internal successors, (95), 76 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 19:34:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2024-09-11 19:34:43,219 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 24 [2024-09-11 19:34:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:43,219 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2024-09-11 19:34:43,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 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 19:34:43,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2024-09-11 19:34:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-11 19:34:43,220 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:43,220 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:43,237 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 19:34:43,420 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-09-11 19:34:43,421 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:43,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1917800498, now seen corresponding path program 11 times [2024-09-11 19:34:43,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:43,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188520599] [2024-09-11 19:34:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:43,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:43,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:43,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188520599] [2024-09-11 19:34:43,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188520599] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:43,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382979544] [2024-09-11 19:34:43,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:34:43,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:43,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:43,483 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 19:34:43,486 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 19:34:43,539 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:34:43,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:43,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 19:34:43,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:43,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:43,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382979544] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:43,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:43,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-09-11 19:34:43,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215229961] [2024-09-11 19:34:43,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:43,618 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:34:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:34:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:34:43,619 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 19:34:43,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:43,680 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2024-09-11 19:34:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:34:43,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 24 [2024-09-11 19:34:43,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:43,681 INFO L225 Difference]: With dead ends: 94 [2024-09-11 19:34:43,681 INFO L226 Difference]: Without dead ends: 65 [2024-09-11 19:34:43,682 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:34:43,682 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:43,682 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 92 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-11 19:34:43,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-09-11 19:34:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 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 19:34:43,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2024-09-11 19:34:43,696 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 24 [2024-09-11 19:34:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:43,696 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2024-09-11 19:34:43,696 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 19:34:43,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2024-09-11 19:34:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-11 19:34:43,697 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:43,697 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:43,710 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-11 19:34:43,897 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:43,898 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:43,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1920327959, now seen corresponding path program 12 times [2024-09-11 19:34:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234387709] [2024-09-11 19:34:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:43,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:43,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234387709] [2024-09-11 19:34:43,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234387709] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076651544] [2024-09-11 19:34:43,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:34:43,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:43,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:43,956 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 19:34:43,959 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 19:34:44,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-09-11 19:34:44,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:44,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 19:34:44,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:44,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:44,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076651544] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:44,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:44,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-09-11 19:34:44,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839209388] [2024-09-11 19:34:44,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:44,089 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:34:44,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:44,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:34:44,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:34:44,090 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 19:34:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:44,135 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2024-09-11 19:34:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:34:44,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 24 [2024-09-11 19:34:44,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:44,136 INFO L225 Difference]: With dead ends: 71 [2024-09-11 19:34:44,136 INFO L226 Difference]: Without dead ends: 66 [2024-09-11 19:34:44,137 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:34:44,137 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:44,137 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 68 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-11 19:34:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-11 19:34:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 65 states have internal predecessors, (80), 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 19:34:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2024-09-11 19:34:44,148 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 24 [2024-09-11 19:34:44,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:44,148 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2024-09-11 19:34:44,148 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 19:34:44,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:44,148 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2024-09-11 19:34:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-11 19:34:44,149 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:44,149 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:44,165 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-11 19:34:44,353 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-11 19:34:44,354 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:44,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash -66002452, now seen corresponding path program 13 times [2024-09-11 19:34:44,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:44,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53517343] [2024-09-11 19:34:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:44,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:44,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53517343] [2024-09-11 19:34:44,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53517343] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961989963] [2024-09-11 19:34:44,591 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:34:44,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:44,593 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 19:34:44,594 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 19:34:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:44,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-11 19:34:44,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:44,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:44,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961989963] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:44,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:44,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 26 [2024-09-11 19:34:44,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156025489] [2024-09-11 19:34:44,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:44,873 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-11 19:34:44,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:44,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-11 19:34:44,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:34:44,874 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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 19:34:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:45,147 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2024-09-11 19:34:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:34:45,147 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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 25 [2024-09-11 19:34:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:45,148 INFO L225 Difference]: With dead ends: 91 [2024-09-11 19:34:45,148 INFO L226 Difference]: Without dead ends: 83 [2024-09-11 19:34:45,148 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:34:45,149 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 40 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:45,149 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 378 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:34:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-11 19:34:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2024-09-11 19:34:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 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 19:34:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-09-11 19:34:45,163 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 25 [2024-09-11 19:34:45,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:45,164 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-09-11 19:34:45,165 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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 19:34:45,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-09-11 19:34:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-11 19:34:45,175 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:45,175 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:45,191 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-11 19:34:45,376 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-11 19:34:45,376 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:45,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:45,377 INFO L85 PathProgramCache]: Analyzing trace with hash -570183088, now seen corresponding path program 14 times [2024-09-11 19:34:45,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:45,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112644533] [2024-09-11 19:34:45,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:45,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:45,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:45,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112644533] [2024-09-11 19:34:45,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112644533] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:45,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368560673] [2024-09-11 19:34:45,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:34:45,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:45,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:45,562 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 19:34:45,564 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 19:34:45,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:34:45,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:45,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 19:34:45,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:45,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:45,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368560673] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:45,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:45,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 24 [2024-09-11 19:34:45,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071807040] [2024-09-11 19:34:45,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:45,861 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:34:45,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:34:45,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:34:45,861 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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 19:34:46,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:46,033 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2024-09-11 19:34:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:34:46,033 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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 25 [2024-09-11 19:34:46,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:46,034 INFO L225 Difference]: With dead ends: 92 [2024-09-11 19:34:46,034 INFO L226 Difference]: Without dead ends: 87 [2024-09-11 19:34:46,035 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:34:46,036 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:46,036 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 274 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-11 19:34:46,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2024-09-11 19:34:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 82 states have internal predecessors, (100), 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 19:34:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2024-09-11 19:34:46,066 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 25 [2024-09-11 19:34:46,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:46,067 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2024-09-11 19:34:46,067 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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 19:34:46,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:46,068 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2024-09-11 19:34:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:34:46,069 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:46,069 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:46,082 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-11 19:34:46,272 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:46,273 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:46,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:46,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1693616026, now seen corresponding path program 15 times [2024-09-11 19:34:46,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:46,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113754489] [2024-09-11 19:34:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:46,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:46,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113754489] [2024-09-11 19:34:46,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113754489] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579418915] [2024-09-11 19:34:46,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:34:46,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:46,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:46,449 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 19:34:46,451 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 19:34:46,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:34:46,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:46,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:34:46,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:46,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:46,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579418915] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:46,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:46,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-09-11 19:34:46,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617460481] [2024-09-11 19:34:46,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:46,835 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:34:46,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:34:46,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:34:46,836 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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 19:34:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:47,029 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2024-09-11 19:34:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-11 19:34:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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 26 [2024-09-11 19:34:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:47,031 INFO L225 Difference]: With dead ends: 115 [2024-09-11 19:34:47,032 INFO L226 Difference]: Without dead ends: 91 [2024-09-11 19:34:47,032 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:34:47,033 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:47,033 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 157 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:47,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-11 19:34:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2024-09-11 19:34:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 85 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 19:34:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2024-09-11 19:34:47,049 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 26 [2024-09-11 19:34:47,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:47,049 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2024-09-11 19:34:47,049 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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 19:34:47,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2024-09-11 19:34:47,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:34:47,050 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:47,050 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:47,064 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 19:34:47,253 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:47,254 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:47,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:47,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1945166861, now seen corresponding path program 16 times [2024-09-11 19:34:47,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:47,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861418521] [2024-09-11 19:34:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:47,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:47,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:47,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861418521] [2024-09-11 19:34:47,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861418521] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:47,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132539434] [2024-09-11 19:34:47,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:34:47,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:47,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:47,392 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 19:34:47,393 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 19:34:47,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:34:47,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:47,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:34:47,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:47,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:47,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132539434] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:47,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:47,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-09-11 19:34:47,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206608280] [2024-09-11 19:34:47,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:47,839 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:34:47,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:34:47,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:34:47,840 INFO L87 Difference]: Start difference. First operand 86 states and 105 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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 19:34:48,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:48,102 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2024-09-11 19:34:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-11 19:34:48,103 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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 26 [2024-09-11 19:34:48,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:48,104 INFO L225 Difference]: With dead ends: 100 [2024-09-11 19:34:48,104 INFO L226 Difference]: Without dead ends: 88 [2024-09-11 19:34:48,104 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:34:48,105 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:48,105 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:48,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-11 19:34:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-11 19:34:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 87 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 19:34:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2024-09-11 19:34:48,122 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 26 [2024-09-11 19:34:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:48,122 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2024-09-11 19:34:48,122 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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 19:34:48,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2024-09-11 19:34:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:34:48,123 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:48,123 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:48,144 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 19:34:48,327 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-11 19:34:48,328 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:48,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:48,328 INFO L85 PathProgramCache]: Analyzing trace with hash -466614217, now seen corresponding path program 17 times [2024-09-11 19:34:48,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:48,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682347365] [2024-09-11 19:34:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:48,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:48,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:48,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682347365] [2024-09-11 19:34:48,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682347365] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:48,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899714605] [2024-09-11 19:34:48,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:34:48,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:48,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:48,410 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 19:34:48,412 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 19:34:48,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-11 19:34:48,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:48,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:34:48,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:48,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:48,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899714605] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:48,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:48,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-09-11 19:34:48,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240869733] [2024-09-11 19:34:48,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:48,549 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 19:34:48,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 19:34:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:34:48,550 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 19:34:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:48,615 INFO L93 Difference]: Finished difference Result 118 states and 144 transitions. [2024-09-11 19:34:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:34:48,616 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 26 [2024-09-11 19:34:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:48,616 INFO L225 Difference]: With dead ends: 118 [2024-09-11 19:34:48,616 INFO L226 Difference]: Without dead ends: 106 [2024-09-11 19:34:48,617 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:34:48,617 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:48,617 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 102 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-09-11 19:34:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2024-09-11 19:34:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.2427184466019416) internal successors, (128), 103 states have internal predecessors, (128), 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 19:34:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2024-09-11 19:34:48,647 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 26 [2024-09-11 19:34:48,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:48,647 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2024-09-11 19:34:48,647 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 19:34:48,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2024-09-11 19:34:48,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:34:48,648 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:48,648 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:48,664 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-11 19:34:48,849 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-11 19:34:48,849 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:48,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1743716338, now seen corresponding path program 18 times [2024-09-11 19:34:48,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:48,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199763129] [2024-09-11 19:34:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:48,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:48,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:48,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199763129] [2024-09-11 19:34:48,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199763129] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:48,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904827032] [2024-09-11 19:34:48,913 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:34:48,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:48,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:48,915 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 19:34:48,916 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 19:34:48,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-09-11 19:34:48,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:48,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:34:48,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:49,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-11 19:34:49,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904827032] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:49,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:49,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-09-11 19:34:49,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894531909] [2024-09-11 19:34:49,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:49,059 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 19:34:49,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:49,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 19:34:49,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:34:49,060 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 19:34:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:49,126 INFO L93 Difference]: Finished difference Result 181 states and 228 transitions. [2024-09-11 19:34:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:34:49,126 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 26 [2024-09-11 19:34:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:49,127 INFO L225 Difference]: With dead ends: 181 [2024-09-11 19:34:49,127 INFO L226 Difference]: Without dead ends: 126 [2024-09-11 19:34:49,127 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:34:49,127 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:49,128 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 63 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-11 19:34:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-09-11 19:34:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.24) internal successors, (155), 125 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 19:34:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2024-09-11 19:34:49,154 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 26 [2024-09-11 19:34:49,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:49,154 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2024-09-11 19:34:49,155 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 19:34:49,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2024-09-11 19:34:49,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-11 19:34:49,156 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:49,156 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:49,172 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-11 19:34:49,356 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-11 19:34:49,356 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:49,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash -384644711, now seen corresponding path program 19 times [2024-09-11 19:34:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:49,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446400065] [2024-09-11 19:34:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:49,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:49,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446400065] [2024-09-11 19:34:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446400065] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948930256] [2024-09-11 19:34:49,638 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:34:49,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:49,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:49,640 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 19:34:49,642 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 19:34:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:49,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-11 19:34:49,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:49,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:50,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948930256] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:50,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:50,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 29 [2024-09-11 19:34:50,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225117315] [2024-09-11 19:34:50,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:50,010 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-11 19:34:50,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:50,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-11 19:34:50,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=741, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:34:50,011 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 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 19:34:50,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:50,321 INFO L93 Difference]: Finished difference Result 157 states and 190 transitions. [2024-09-11 19:34:50,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:34:50,321 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 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) Word has length 27 [2024-09-11 19:34:50,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:50,322 INFO L225 Difference]: With dead ends: 157 [2024-09-11 19:34:50,322 INFO L226 Difference]: Without dead ends: 149 [2024-09-11 19:34:50,323 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:34:50,323 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 49 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:50,324 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 477 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:34:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-11 19:34:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 134. [2024-09-11 19:34:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.2330827067669172) internal successors, (164), 133 states have internal predecessors, (164), 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 19:34:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 164 transitions. [2024-09-11 19:34:50,351 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 164 transitions. Word has length 27 [2024-09-11 19:34:50,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:50,352 INFO L474 AbstractCegarLoop]: Abstraction has 134 states and 164 transitions. [2024-09-11 19:34:50,352 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 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 19:34:50,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 164 transitions. [2024-09-11 19:34:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-11 19:34:50,353 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:50,353 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:50,369 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-11 19:34:50,557 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-11 19:34:50,558 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:50,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:50,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1446506014, now seen corresponding path program 20 times [2024-09-11 19:34:50,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:50,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53353031] [2024-09-11 19:34:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:50,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:34:50,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:50,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53353031] [2024-09-11 19:34:50,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53353031] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:50,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712375235] [2024-09-11 19:34:50,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:34:50,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:50,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:50,712 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 19:34:50,713 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 19:34:50,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:34:50,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:50,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:34:50,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-11 19:34:50,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-11 19:34:51,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712375235] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:51,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:51,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-09-11 19:34:51,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664456508] [2024-09-11 19:34:51,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:51,019 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-11 19:34:51,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:51,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-11 19:34:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:34:51,020 INFO L87 Difference]: Start difference. First operand 134 states and 164 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 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 19:34:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:51,150 INFO L93 Difference]: Finished difference Result 176 states and 214 transitions. [2024-09-11 19:34:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 19:34:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 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 27 [2024-09-11 19:34:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:51,151 INFO L225 Difference]: With dead ends: 176 [2024-09-11 19:34:51,151 INFO L226 Difference]: Without dead ends: 142 [2024-09-11 19:34:51,152 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:34:51,153 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:51,153 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 143 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-09-11 19:34:51,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-09-11 19:34:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.2127659574468086) internal successors, (171), 141 states have internal predecessors, (171), 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 19:34:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2024-09-11 19:34:51,184 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 27 [2024-09-11 19:34:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:51,184 INFO L474 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2024-09-11 19:34:51,185 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 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 19:34:51,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:51,185 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2024-09-11 19:34:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-11 19:34:51,185 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:51,185 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:51,197 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-11 19:34:51,386 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:51,386 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:51,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1539073127, now seen corresponding path program 21 times [2024-09-11 19:34:51,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:51,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303660689] [2024-09-11 19:34:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:51,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:51,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:51,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303660689] [2024-09-11 19:34:51,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303660689] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:51,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488449449] [2024-09-11 19:34:51,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:34:51,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:51,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:51,602 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 19:34:51,603 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 19:34:51,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-11 19:34:51,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:51,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-11 19:34:51,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:51,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:51,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488449449] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:51,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:51,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 27 [2024-09-11 19:34:51,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899110939] [2024-09-11 19:34:51,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:51,943 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-11 19:34:51,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:51,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-11 19:34:51,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2024-09-11 19:34:51,944 INFO L87 Difference]: Start difference. First operand 142 states and 171 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 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 19:34:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:52,163 INFO L93 Difference]: Finished difference Result 169 states and 202 transitions. [2024-09-11 19:34:52,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:34:52,164 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 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 27 [2024-09-11 19:34:52,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:52,165 INFO L225 Difference]: With dead ends: 169 [2024-09-11 19:34:52,165 INFO L226 Difference]: Without dead ends: 149 [2024-09-11 19:34:52,165 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:34:52,166 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:52,166 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 379 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:52,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-11 19:34:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2024-09-11 19:34:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 140 states have internal predecessors, (171), 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 19:34:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 171 transitions. [2024-09-11 19:34:52,200 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 171 transitions. Word has length 27 [2024-09-11 19:34:52,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:52,201 INFO L474 AbstractCegarLoop]: Abstraction has 141 states and 171 transitions. [2024-09-11 19:34:52,201 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 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 19:34:52,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 171 transitions. [2024-09-11 19:34:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-11 19:34:52,202 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:52,202 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:52,218 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-11 19:34:52,402 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-09-11 19:34:52,403 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:52,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:52,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1336907646, now seen corresponding path program 22 times [2024-09-11 19:34:52,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:52,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376657043] [2024-09-11 19:34:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:52,537 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-11 19:34:52,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:52,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376657043] [2024-09-11 19:34:52,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376657043] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:52,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238002983] [2024-09-11 19:34:52,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:34:52,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:52,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:52,539 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 19:34:52,540 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 19:34:52,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:34:52,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:52,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:34:52,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-11 19:34:52,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-11 19:34:52,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238002983] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:52,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:52,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-09-11 19:34:52,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102132803] [2024-09-11 19:34:52,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:52,853 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-11 19:34:52,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-11 19:34:52,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:34:52,854 INFO L87 Difference]: Start difference. First operand 141 states and 171 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 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 19:34:52,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:52,995 INFO L93 Difference]: Finished difference Result 159 states and 189 transitions. [2024-09-11 19:34:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:34:52,995 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 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 27 [2024-09-11 19:34:52,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:52,996 INFO L225 Difference]: With dead ends: 159 [2024-09-11 19:34:52,996 INFO L226 Difference]: Without dead ends: 141 [2024-09-11 19:34:52,996 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:34:52,997 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:52,997 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 161 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-09-11 19:34:53,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-09-11 19:34:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 140 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 19:34:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2024-09-11 19:34:53,030 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 27 [2024-09-11 19:34:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:53,030 INFO L474 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2024-09-11 19:34:53,030 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 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 19:34:53,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:53,031 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2024-09-11 19:34:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-11 19:34:53,031 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:53,031 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:53,048 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 19:34:53,235 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-11 19:34:53,236 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:53,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:53,236 INFO L85 PathProgramCache]: Analyzing trace with hash 405640589, now seen corresponding path program 23 times [2024-09-11 19:34:53,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:53,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922248219] [2024-09-11 19:34:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:53,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:53,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:53,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922248219] [2024-09-11 19:34:53,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922248219] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:53,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201661931] [2024-09-11 19:34:53,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:34:53,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:53,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:53,430 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 19:34:53,434 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 19:34:53,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:34:53,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:53,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:34:53,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:53,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:53,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201661931] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:53,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:53,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-09-11 19:34:53,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236462650] [2024-09-11 19:34:53,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:53,960 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-11 19:34:53,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:53,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-11 19:34:53,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:34:53,961 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 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 19:34:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:54,259 INFO L93 Difference]: Finished difference Result 198 states and 233 transitions. [2024-09-11 19:34:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 19:34:54,259 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 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 28 [2024-09-11 19:34:54,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:54,261 INFO L225 Difference]: With dead ends: 198 [2024-09-11 19:34:54,261 INFO L226 Difference]: Without dead ends: 170 [2024-09-11 19:34:54,261 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:34:54,264 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:54,264 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 240 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:54,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-11 19:34:54,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 155. [2024-09-11 19:34:54,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1948051948051948) internal successors, (184), 154 states have internal predecessors, (184), 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 19:34:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2024-09-11 19:34:54,302 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 28 [2024-09-11 19:34:54,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:54,302 INFO L474 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2024-09-11 19:34:54,302 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 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 19:34:54,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2024-09-11 19:34:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-11 19:34:54,303 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:54,303 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:54,315 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 19:34:54,503 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-11 19:34:54,504 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:54,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash -386218118, now seen corresponding path program 24 times [2024-09-11 19:34:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418511089] [2024-09-11 19:34:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:54,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:54,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:54,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418511089] [2024-09-11 19:34:54,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418511089] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:54,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136257348] [2024-09-11 19:34:54,673 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:34:54,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:54,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:54,674 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 19:34:54,675 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 19:34:54,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:34:54,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:54,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:34:54,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:54,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:34:55,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136257348] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:55,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:55,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-09-11 19:34:55,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962821893] [2024-09-11 19:34:55,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:55,169 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 19:34:55,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:55,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 19:34:55,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:34:55,170 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 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 19:34:55,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:55,491 INFO L93 Difference]: Finished difference Result 172 states and 204 transitions. [2024-09-11 19:34:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-11 19:34:55,491 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 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) Word has length 28 [2024-09-11 19:34:55,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:55,492 INFO L225 Difference]: With dead ends: 172 [2024-09-11 19:34:55,492 INFO L226 Difference]: Without dead ends: 158 [2024-09-11 19:34:55,493 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:34:55,493 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:55,494 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 298 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:34:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-09-11 19:34:55,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-09-11 19:34:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 157 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 19:34:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 187 transitions. [2024-09-11 19:34:55,540 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 187 transitions. Word has length 28 [2024-09-11 19:34:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:55,541 INFO L474 AbstractCegarLoop]: Abstraction has 158 states and 187 transitions. [2024-09-11 19:34:55,541 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 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 19:34:55,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 187 transitions. [2024-09-11 19:34:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-11 19:34:55,542 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:55,542 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:55,555 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-11 19:34:55,745 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:55,746 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:55,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1838398290, now seen corresponding path program 25 times [2024-09-11 19:34:55,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:55,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576816754] [2024-09-11 19:34:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:55,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:34:55,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:55,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576816754] [2024-09-11 19:34:55,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576816754] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501529747] [2024-09-11 19:34:55,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:34:55,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:55,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:55,825 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 19:34:55,825 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 19:34:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:55,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:34:55,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:34:55,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:34:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501529747] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:55,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:55,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-09-11 19:34:55,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685041737] [2024-09-11 19:34:55,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:55,960 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:34:55,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:34:55,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:34:55,960 INFO L87 Difference]: Start difference. First operand 158 states and 187 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 19:34:56,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:56,027 INFO L93 Difference]: Finished difference Result 196 states and 232 transitions. [2024-09-11 19:34:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-11 19:34:56,028 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 28 [2024-09-11 19:34:56,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:56,029 INFO L225 Difference]: With dead ends: 196 [2024-09-11 19:34:56,029 INFO L226 Difference]: Without dead ends: 146 [2024-09-11 19:34:56,029 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:34:56,030 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:56,030 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 81 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-11 19:34:56,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-09-11 19:34:56,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.1793103448275861) internal successors, (171), 145 states have internal predecessors, (171), 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 19:34:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2024-09-11 19:34:56,059 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 28 [2024-09-11 19:34:56,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:56,059 INFO L474 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2024-09-11 19:34:56,059 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 19:34:56,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2024-09-11 19:34:56,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-11 19:34:56,060 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:56,060 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:56,072 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 19:34:56,260 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:56,260 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:56,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash -271272933, now seen corresponding path program 26 times [2024-09-11 19:34:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:56,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864495719] [2024-09-11 19:34:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:34:56,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864495719] [2024-09-11 19:34:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864495719] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956749422] [2024-09-11 19:34:56,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:34:56,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:56,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:56,335 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 19:34:56,336 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 19:34:56,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:34:56,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:56,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:34:56,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:34:56,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:34:56,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956749422] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:56,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:56,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-09-11 19:34:56,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187241064] [2024-09-11 19:34:56,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:56,501 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:34:56,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:56,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:34:56,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:34:56,502 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 19:34:56,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:56,591 INFO L93 Difference]: Finished difference Result 154 states and 179 transitions. [2024-09-11 19:34:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-11 19:34:56,591 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 28 [2024-09-11 19:34:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:56,592 INFO L225 Difference]: With dead ends: 154 [2024-09-11 19:34:56,592 INFO L226 Difference]: Without dead ends: 149 [2024-09-11 19:34:56,592 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:34:56,593 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:56,593 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 101 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:34:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-11 19:34:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2024-09-11 19:34:56,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.178082191780822) internal successors, (172), 146 states have internal predecessors, (172), 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 19:34:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2024-09-11 19:34:56,624 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 28 [2024-09-11 19:34:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:56,624 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2024-09-11 19:34:56,624 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 19:34:56,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2024-09-11 19:34:56,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:34:56,625 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:56,625 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:56,641 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 19:34:56,825 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-11 19:34:56,825 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:56,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:56,826 INFO L85 PathProgramCache]: Analyzing trace with hash 356864972, now seen corresponding path program 27 times [2024-09-11 19:34:56,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:56,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268210194] [2024-09-11 19:34:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:56,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:57,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:57,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268210194] [2024-09-11 19:34:57,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268210194] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:57,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928250042] [2024-09-11 19:34:57,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:34:57,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:57,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:57,092 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 19:34:57,093 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 19:34:57,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:34:57,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:57,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-11 19:34:57,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:57,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:34:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928250042] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:57,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:57,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 32 [2024-09-11 19:34:57,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318909899] [2024-09-11 19:34:57,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:57,433 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-11 19:34:57,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-11 19:34:57,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:34:57,434 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 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 19:34:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:57,757 INFO L93 Difference]: Finished difference Result 181 states and 210 transitions. [2024-09-11 19:34:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:34:57,757 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 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 19:34:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:57,758 INFO L225 Difference]: With dead ends: 181 [2024-09-11 19:34:57,758 INFO L226 Difference]: Without dead ends: 173 [2024-09-11 19:34:57,758 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 19:34:57,759 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:57,759 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 569 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:34:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-11 19:34:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 155. [2024-09-11 19:34:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1753246753246753) internal successors, (181), 154 states have internal predecessors, (181), 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 19:34:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 181 transitions. [2024-09-11 19:34:57,792 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 181 transitions. Word has length 29 [2024-09-11 19:34:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:57,792 INFO L474 AbstractCegarLoop]: Abstraction has 155 states and 181 transitions. [2024-09-11 19:34:57,793 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 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 19:34:57,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 181 transitions. [2024-09-11 19:34:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:34:57,793 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:57,793 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:57,807 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 19:34:57,994 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-11 19:34:57,994 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:57,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1140515024, now seen corresponding path program 28 times [2024-09-11 19:34:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908211419] [2024-09-11 19:34:57,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:57,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:58,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:58,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908211419] [2024-09-11 19:34:58,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908211419] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:58,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822151267] [2024-09-11 19:34:58,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:34:58,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:58,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:58,200 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 19:34:58,201 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 19:34:58,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:34:58,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:58,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-11 19:34:58,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:58,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:34:58,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822151267] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:58,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:58,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-09-11 19:34:58,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501320279] [2024-09-11 19:34:58,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:58,537 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 19:34:58,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 19:34:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:34:58,538 INFO L87 Difference]: Start difference. First operand 155 states and 181 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 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 19:34:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:58,811 INFO L93 Difference]: Finished difference Result 168 states and 193 transitions. [2024-09-11 19:34:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:34:58,811 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 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 19:34:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:58,812 INFO L225 Difference]: With dead ends: 168 [2024-09-11 19:34:58,812 INFO L226 Difference]: Without dead ends: 147 [2024-09-11 19:34:58,812 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:34:58,813 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 36 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:58,813 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 507 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:34:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-11 19:34:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-09-11 19:34:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.178082191780822) internal successors, (172), 146 states have internal predecessors, (172), 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 19:34:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2024-09-11 19:34:58,843 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 29 [2024-09-11 19:34:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:58,843 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2024-09-11 19:34:58,843 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 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 19:34:58,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2024-09-11 19:34:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:34:58,844 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:58,844 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:58,858 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-11 19:34:59,048 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-11 19:34:59,049 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:59,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:59,049 INFO L85 PathProgramCache]: Analyzing trace with hash 209665996, now seen corresponding path program 29 times [2024-09-11 19:34:59,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:59,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965646134] [2024-09-11 19:34:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:59,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:34:59,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:59,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965646134] [2024-09-11 19:34:59,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965646134] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:59,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979145393] [2024-09-11 19:34:59,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:34:59,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:59,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:59,305 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 19:34:59,306 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 19:34:59,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-11 19:34:59,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:59,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-11 19:34:59,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:34:59,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:34:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:34:59,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979145393] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:34:59,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:34:59,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2024-09-11 19:34:59,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204931448] [2024-09-11 19:34:59,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:34:59,641 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-11 19:34:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:34:59,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-11 19:34:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2024-09-11 19:34:59,642 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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 19:34:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:59,847 INFO L93 Difference]: Finished difference Result 167 states and 195 transitions. [2024-09-11 19:34:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:34:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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) Word has length 29 [2024-09-11 19:34:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:59,848 INFO L225 Difference]: With dead ends: 167 [2024-09-11 19:34:59,848 INFO L226 Difference]: Without dead ends: 162 [2024-09-11 19:34:59,848 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 19:34:59,849 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:59,849 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 279 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:34:59,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-09-11 19:34:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2024-09-11 19:34:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.1794871794871795) internal successors, (184), 156 states have internal predecessors, (184), 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 19:34:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2024-09-11 19:34:59,889 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 29 [2024-09-11 19:34:59,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:59,889 INFO L474 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2024-09-11 19:34:59,889 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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 19:34:59,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2024-09-11 19:34:59,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 19:34:59,890 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:59,890 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:59,911 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 19:35:00,094 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-11 19:35:00,095 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:00,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:00,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1917604282, now seen corresponding path program 30 times [2024-09-11 19:35:00,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:00,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986181839] [2024-09-11 19:35:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986181839] [2024-09-11 19:35:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986181839] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301025062] [2024-09-11 19:35:00,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:35:00,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:00,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:00,286 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 19:35:00,287 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 19:35:00,342 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:35:00,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:00,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:35:00,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:00,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301025062] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:00,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:00,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-09-11 19:35:00,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587887334] [2024-09-11 19:35:00,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:00,882 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-11 19:35:00,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:00,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-11 19:35:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:35:00,883 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 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 19:35:01,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:01,271 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2024-09-11 19:35:01,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:35:01,272 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 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 30 [2024-09-11 19:35:01,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:01,273 INFO L225 Difference]: With dead ends: 221 [2024-09-11 19:35:01,273 INFO L226 Difference]: Without dead ends: 191 [2024-09-11 19:35:01,273 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=1659, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:35:01,274 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:01,274 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 240 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:01,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-09-11 19:35:01,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 172. [2024-09-11 19:35:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 171 states have internal predecessors, (202), 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 19:35:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 202 transitions. [2024-09-11 19:35:01,314 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 202 transitions. Word has length 30 [2024-09-11 19:35:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:01,314 INFO L474 AbstractCegarLoop]: Abstraction has 172 states and 202 transitions. [2024-09-11 19:35:01,314 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 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 19:35:01,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 202 transitions. [2024-09-11 19:35:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 19:35:01,314 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:01,315 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:01,327 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 19:35:01,515 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-11 19:35:01,515 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:01,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1155179155, now seen corresponding path program 31 times [2024-09-11 19:35:01,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:01,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981767239] [2024-09-11 19:35:01,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:01,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981767239] [2024-09-11 19:35:01,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981767239] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367987458] [2024-09-11 19:35:01,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:35:01,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:01,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:01,739 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 19:35:01,739 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 19:35:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:01,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:35:01,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:02,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:02,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367987458] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:02,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:02,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-09-11 19:35:02,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35298650] [2024-09-11 19:35:02,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:02,363 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-11 19:35:02,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:02,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-11 19:35:02,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:35:02,364 INFO L87 Difference]: Start difference. First operand 172 states and 202 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 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 19:35:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:02,742 INFO L93 Difference]: Finished difference Result 190 states and 223 transitions. [2024-09-11 19:35:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:35:02,742 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 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 30 [2024-09-11 19:35:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:02,743 INFO L225 Difference]: With dead ends: 190 [2024-09-11 19:35:02,743 INFO L226 Difference]: Without dead ends: 175 [2024-09-11 19:35:02,744 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:35:02,744 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:02,744 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 296 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-09-11 19:35:02,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-09-11 19:35:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.1781609195402298) internal successors, (205), 174 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 19:35:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 205 transitions. [2024-09-11 19:35:02,784 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 205 transitions. Word has length 30 [2024-09-11 19:35:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:02,784 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 205 transitions. [2024-09-11 19:35:02,784 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 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 19:35:02,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 205 transitions. [2024-09-11 19:35:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 19:35:02,785 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:02,785 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:02,802 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 19:35:02,989 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:02,990 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:02,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2061096389, now seen corresponding path program 32 times [2024-09-11 19:35:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905754886] [2024-09-11 19:35:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:35:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905754886] [2024-09-11 19:35:03,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905754886] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:03,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082809346] [2024-09-11 19:35:03,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:35:03,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:03,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:03,053 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 19:35:03,054 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 19:35:03,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:35:03,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:03,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-11 19:35:03,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:35:03,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:35:03,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082809346] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:03,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:03,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-09-11 19:35:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510322631] [2024-09-11 19:35:03,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:03,192 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 19:35:03,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:03,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 19:35:03,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:35:03,192 INFO L87 Difference]: Start difference. First operand 175 states and 205 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 19:35:03,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:03,302 INFO L93 Difference]: Finished difference Result 215 states and 254 transitions. [2024-09-11 19:35:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:35:03,302 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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) Word has length 30 [2024-09-11 19:35:03,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:03,303 INFO L225 Difference]: With dead ends: 215 [2024-09-11 19:35:03,303 INFO L226 Difference]: Without dead ends: 202 [2024-09-11 19:35:03,304 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:35:03,304 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:03,304 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 136 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:35:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-09-11 19:35:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2024-09-11 19:35:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.1938775510204083) internal successors, (234), 196 states have internal predecessors, (234), 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 19:35:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 234 transitions. [2024-09-11 19:35:03,344 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 234 transitions. Word has length 30 [2024-09-11 19:35:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:03,345 INFO L474 AbstractCegarLoop]: Abstraction has 197 states and 234 transitions. [2024-09-11 19:35:03,345 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 19:35:03,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 234 transitions. [2024-09-11 19:35:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 19:35:03,346 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:03,346 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:03,359 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-11 19:35:03,546 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:03,546 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:03,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:03,547 INFO L85 PathProgramCache]: Analyzing trace with hash -724850578, now seen corresponding path program 33 times [2024-09-11 19:35:03,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:03,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971674287] [2024-09-11 19:35:03,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:03,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:35:03,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:03,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971674287] [2024-09-11 19:35:03,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971674287] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:03,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781448518] [2024-09-11 19:35:03,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:35:03,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:03,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:03,636 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 19:35:03,637 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 19:35:03,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:35:03,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:03,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-11 19:35:03,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:35:03,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:35:03,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781448518] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:03,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:03,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-09-11 19:35:03,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609578104] [2024-09-11 19:35:03,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:03,781 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 19:35:03,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:03,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 19:35:03,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:35:03,782 INFO L87 Difference]: Start difference. First operand 197 states and 234 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 19:35:03,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:03,884 INFO L93 Difference]: Finished difference Result 318 states and 388 transitions. [2024-09-11 19:35:03,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:35:03,885 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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) Word has length 30 [2024-09-11 19:35:03,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:03,886 INFO L225 Difference]: With dead ends: 318 [2024-09-11 19:35:03,886 INFO L226 Difference]: Without dead ends: 235 [2024-09-11 19:35:03,886 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:35:03,887 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:03,887 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 106 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:35:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-11 19:35:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-09-11 19:35:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1923076923076923) internal successors, (279), 234 states have internal predecessors, (279), 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 19:35:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 279 transitions. [2024-09-11 19:35:03,956 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 279 transitions. Word has length 30 [2024-09-11 19:35:03,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:03,956 INFO L474 AbstractCegarLoop]: Abstraction has 235 states and 279 transitions. [2024-09-11 19:35:03,956 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 19:35:03,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:03,957 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 279 transitions. [2024-09-11 19:35:03,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:35:03,957 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:03,957 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:03,971 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 19:35:04,158 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-09-11 19:35:04,158 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:04,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:04,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2006090695, now seen corresponding path program 34 times [2024-09-11 19:35:04,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:04,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7570313] [2024-09-11 19:35:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:04,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:04,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7570313] [2024-09-11 19:35:04,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7570313] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404375631] [2024-09-11 19:35:04,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:35:04,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:04,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:04,453 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 19:35:04,454 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 19:35:04,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:35:04,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:04,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-11 19:35:04,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:04,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:04,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404375631] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:04,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:04,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 35 [2024-09-11 19:35:04,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771871050] [2024-09-11 19:35:04,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:04,826 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-11 19:35:04,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:04,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-11 19:35:04,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 19:35:04,827 INFO L87 Difference]: Start difference. First operand 235 states and 279 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 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 19:35:05,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:05,353 INFO L93 Difference]: Finished difference Result 276 states and 325 transitions. [2024-09-11 19:35:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:35:05,354 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 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 19:35:05,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:05,355 INFO L225 Difference]: With dead ends: 276 [2024-09-11 19:35:05,355 INFO L226 Difference]: Without dead ends: 268 [2024-09-11 19:35:05,356 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2024-09-11 19:35:05,356 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 64 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:05,356 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 730 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:35:05,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-09-11 19:35:05,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 243. [2024-09-11 19:35:05,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.1900826446280992) internal successors, (288), 242 states have internal predecessors, (288), 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 19:35:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2024-09-11 19:35:05,436 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 31 [2024-09-11 19:35:05,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:05,437 INFO L474 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2024-09-11 19:35:05,437 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 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 19:35:05,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2024-09-11 19:35:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:35:05,438 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:05,438 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:05,454 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 19:35:05,638 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:05,639 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:05,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1115054649, now seen corresponding path program 35 times [2024-09-11 19:35:05,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:05,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38082734] [2024-09-11 19:35:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:05,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:05,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:05,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38082734] [2024-09-11 19:35:05,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38082734] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:05,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211281174] [2024-09-11 19:35:05,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:35:05,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:05,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:05,869 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 19:35:05,870 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 19:35:05,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-11 19:35:05,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:05,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-11 19:35:05,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:06,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:06,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211281174] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:06,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:06,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 33 [2024-09-11 19:35:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109879329] [2024-09-11 19:35:06,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:06,266 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-11 19:35:06,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:06,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-11 19:35:06,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:35:06,267 INFO L87 Difference]: Start difference. First operand 243 states and 288 transitions. Second operand has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 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 19:35:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:06,585 INFO L93 Difference]: Finished difference Result 257 states and 301 transitions. [2024-09-11 19:35:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:35:06,585 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 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 19:35:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:06,586 INFO L225 Difference]: With dead ends: 257 [2024-09-11 19:35:06,586 INFO L226 Difference]: Without dead ends: 235 [2024-09-11 19:35:06,587 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=1592, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:35:06,587 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:06,588 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 562 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:06,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-11 19:35:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-09-11 19:35:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1923076923076923) internal successors, (279), 234 states have internal predecessors, (279), 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 19:35:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 279 transitions. [2024-09-11 19:35:06,667 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 279 transitions. Word has length 31 [2024-09-11 19:35:06,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:06,667 INFO L474 AbstractCegarLoop]: Abstraction has 235 states and 279 transitions. [2024-09-11 19:35:06,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 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 19:35:06,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 279 transitions. [2024-09-11 19:35:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:35:06,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:06,669 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:06,685 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-11 19:35:06,869 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:06,869 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:06,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1008538498, now seen corresponding path program 36 times [2024-09-11 19:35:06,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:06,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187908778] [2024-09-11 19:35:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:06,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-11 19:35:06,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187908778] [2024-09-11 19:35:06,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187908778] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531869421] [2024-09-11 19:35:06,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:35:06,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:06,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:06,987 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 19:35:06,988 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 19:35:07,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-09-11 19:35:07,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:07,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:35:07,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-11 19:35:07,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-11 19:35:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531869421] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:07,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:07,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-09-11 19:35:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503346669] [2024-09-11 19:35:07,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:07,310 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:35:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:35:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:35:07,310 INFO L87 Difference]: Start difference. First operand 235 states and 279 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 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 19:35:07,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:07,504 INFO L93 Difference]: Finished difference Result 298 states and 354 transitions. [2024-09-11 19:35:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-11 19:35:07,504 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 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) Word has length 31 [2024-09-11 19:35:07,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:07,505 INFO L225 Difference]: With dead ends: 298 [2024-09-11 19:35:07,505 INFO L226 Difference]: Without dead ends: 255 [2024-09-11 19:35:07,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:35:07,506 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:07,506 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-09-11 19:35:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-09-11 19:35:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.1732283464566928) internal successors, (298), 254 states have internal predecessors, (298), 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 19:35:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 298 transitions. [2024-09-11 19:35:07,589 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 298 transitions. Word has length 31 [2024-09-11 19:35:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:07,590 INFO L474 AbstractCegarLoop]: Abstraction has 255 states and 298 transitions. [2024-09-11 19:35:07,590 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 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 19:35:07,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 298 transitions. [2024-09-11 19:35:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:35:07,591 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:07,591 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:07,606 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 19:35:07,791 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-11 19:35:07,791 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:07,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2143968199, now seen corresponding path program 37 times [2024-09-11 19:35:07,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:07,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584826238] [2024-09-11 19:35:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:07,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:08,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584826238] [2024-09-11 19:35:08,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584826238] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:08,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234405227] [2024-09-11 19:35:08,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:35:08,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:08,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:08,015 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 19:35:08,016 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 19:35:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:08,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-11 19:35:08,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:08,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:08,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234405227] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:08,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:08,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 31 [2024-09-11 19:35:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753042751] [2024-09-11 19:35:08,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:08,452 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-11 19:35:08,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-11 19:35:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2024-09-11 19:35:08,452 INFO L87 Difference]: Start difference. First operand 255 states and 298 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 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 19:35:08,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:08,728 INFO L93 Difference]: Finished difference Result 285 states and 332 transitions. [2024-09-11 19:35:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:35:08,728 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 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 19:35:08,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:08,730 INFO L225 Difference]: With dead ends: 285 [2024-09-11 19:35:08,730 INFO L226 Difference]: Without dead ends: 262 [2024-09-11 19:35:08,730 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=1354, Unknown=0, NotChecked=0, Total=1482 [2024-09-11 19:35:08,730 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:08,731 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 411 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-09-11 19:35:08,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 253. [2024-09-11 19:35:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.1785714285714286) internal successors, (297), 252 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 19:35:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 297 transitions. [2024-09-11 19:35:08,821 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 297 transitions. Word has length 31 [2024-09-11 19:35:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:08,821 INFO L474 AbstractCegarLoop]: Abstraction has 253 states and 297 transitions. [2024-09-11 19:35:08,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 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 19:35:08,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 297 transitions. [2024-09-11 19:35:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:35:08,822 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:08,822 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:08,834 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-09-11 19:35:09,022 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-09-11 19:35:09,022 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:09,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash -479131682, now seen corresponding path program 38 times [2024-09-11 19:35:09,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:09,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250337597] [2024-09-11 19:35:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:09,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-11 19:35:09,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:09,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250337597] [2024-09-11 19:35:09,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250337597] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:09,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703849791] [2024-09-11 19:35:09,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:35:09,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:09,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:09,177 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 19:35:09,179 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 19:35:09,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:35:09,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:09,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:35:09,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-11 19:35:09,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-11 19:35:09,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703849791] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:09,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:09,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-09-11 19:35:09,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439042377] [2024-09-11 19:35:09,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:09,543 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-11 19:35:09,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:09,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-11 19:35:09,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:35:09,544 INFO L87 Difference]: Start difference. First operand 253 states and 297 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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 19:35:09,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:09,786 INFO L93 Difference]: Finished difference Result 276 states and 320 transitions. [2024-09-11 19:35:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-11 19:35:09,786 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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 19:35:09,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:09,787 INFO L225 Difference]: With dead ends: 276 [2024-09-11 19:35:09,787 INFO L226 Difference]: Without dead ends: 253 [2024-09-11 19:35:09,788 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:35:09,788 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:09,788 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 233 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:09,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-09-11 19:35:09,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-09-11 19:35:09,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.1547619047619047) internal successors, (291), 252 states have internal predecessors, (291), 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 19:35:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 291 transitions. [2024-09-11 19:35:09,843 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 291 transitions. Word has length 31 [2024-09-11 19:35:09,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:09,843 INFO L474 AbstractCegarLoop]: Abstraction has 253 states and 291 transitions. [2024-09-11 19:35:09,844 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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 19:35:09,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:09,844 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 291 transitions. [2024-09-11 19:35:09,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-11 19:35:09,844 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:09,844 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:09,856 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-11 19:35:10,045 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-09-11 19:35:10,045 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:10,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:10,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1680422637, now seen corresponding path program 39 times [2024-09-11 19:35:10,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:10,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685667919] [2024-09-11 19:35:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:10,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:10,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685667919] [2024-09-11 19:35:10,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685667919] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955228584] [2024-09-11 19:35:10,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:35:10,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:10,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:10,266 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 19:35:10,268 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 19:35:10,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-11 19:35:10,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:10,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-11 19:35:10,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:10,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:11,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955228584] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:11,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:11,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-09-11 19:35:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784943082] [2024-09-11 19:35:11,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:11,012 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-11 19:35:11,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:11,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-11 19:35:11,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2024-09-11 19:35:11,013 INFO L87 Difference]: Start difference. First operand 253 states and 291 transitions. Second operand has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 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 19:35:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:11,456 INFO L93 Difference]: Finished difference Result 358 states and 408 transitions. [2024-09-11 19:35:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:35:11,456 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 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 32 [2024-09-11 19:35:11,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:11,457 INFO L225 Difference]: With dead ends: 358 [2024-09-11 19:35:11,457 INFO L226 Difference]: Without dead ends: 324 [2024-09-11 19:35:11,458 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=300, Invalid=2250, Unknown=0, NotChecked=0, Total=2550 [2024-09-11 19:35:11,458 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:11,459 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 311 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-09-11 19:35:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 281. [2024-09-11 19:35:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.1535714285714285) internal successors, (323), 280 states have internal predecessors, (323), 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 19:35:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 323 transitions. [2024-09-11 19:35:11,532 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 323 transitions. Word has length 32 [2024-09-11 19:35:11,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:11,532 INFO L474 AbstractCegarLoop]: Abstraction has 281 states and 323 transitions. [2024-09-11 19:35:11,532 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 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 19:35:11,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 323 transitions. [2024-09-11 19:35:11,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-11 19:35:11,533 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:11,533 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:11,545 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-09-11 19:35:11,734 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:11,734 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:11,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash 913416602, now seen corresponding path program 40 times [2024-09-11 19:35:11,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:11,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17808475] [2024-09-11 19:35:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:11,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:12,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:12,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17808475] [2024-09-11 19:35:12,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17808475] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:12,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025843462] [2024-09-11 19:35:12,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:35:12,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:12,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:12,032 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 19:35:12,034 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 19:35:12,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:35:12,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:12,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-11 19:35:12,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:12,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:12,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025843462] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:12,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:12,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 40 [2024-09-11 19:35:12,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585504465] [2024-09-11 19:35:12,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:12,743 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-11 19:35:12,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:12,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-11 19:35:12,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1438, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:35:12,744 INFO L87 Difference]: Start difference. First operand 281 states and 323 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 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 19:35:13,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:13,360 INFO L93 Difference]: Finished difference Result 302 states and 348 transitions. [2024-09-11 19:35:13,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-11 19:35:13,361 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 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 32 [2024-09-11 19:35:13,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:13,362 INFO L225 Difference]: With dead ends: 302 [2024-09-11 19:35:13,362 INFO L226 Difference]: Without dead ends: 285 [2024-09-11 19:35:13,363 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=213, Invalid=2337, Unknown=0, NotChecked=0, Total=2550 [2024-09-11 19:35:13,363 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:13,363 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 333 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:13,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-09-11 19:35:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-09-11 19:35:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.1514084507042253) internal successors, (327), 284 states have internal predecessors, (327), 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 19:35:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 327 transitions. [2024-09-11 19:35:13,473 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 327 transitions. Word has length 32 [2024-09-11 19:35:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:13,473 INFO L474 AbstractCegarLoop]: Abstraction has 285 states and 327 transitions. [2024-09-11 19:35:13,473 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 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 19:35:13,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 327 transitions. [2024-09-11 19:35:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-11 19:35:13,474 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:13,474 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:13,496 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 19:35:13,678 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-11 19:35:13,679 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:13,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:13,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1981187314, now seen corresponding path program 41 times [2024-09-11 19:35:13,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:13,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824046074] [2024-09-11 19:35:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:13,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:13,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:13,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824046074] [2024-09-11 19:35:13,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824046074] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:13,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272076968] [2024-09-11 19:35:13,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:35:13,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:13,775 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 19:35:13,777 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 19:35:13,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-11 19:35:13,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:13,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-11 19:35:13,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:13,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:13,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272076968] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:13,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:13,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-09-11 19:35:13,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400695002] [2024-09-11 19:35:13,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:13,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-11 19:35:13,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:13,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-11 19:35:13,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:35:13,982 INFO L87 Difference]: Start difference. First operand 285 states and 327 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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 19:35:14,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:14,185 INFO L93 Difference]: Finished difference Result 345 states and 398 transitions. [2024-09-11 19:35:14,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:35:14,186 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) Word has length 32 [2024-09-11 19:35:14,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:14,187 INFO L225 Difference]: With dead ends: 345 [2024-09-11 19:35:14,187 INFO L226 Difference]: Without dead ends: 273 [2024-09-11 19:35:14,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:35:14,188 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:14,188 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 140 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-09-11 19:35:14,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2024-09-11 19:35:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.1433823529411764) internal successors, (311), 272 states have internal predecessors, (311), 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 19:35:14,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 311 transitions. [2024-09-11 19:35:14,282 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 311 transitions. Word has length 32 [2024-09-11 19:35:14,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:14,282 INFO L474 AbstractCegarLoop]: Abstraction has 273 states and 311 transitions. [2024-09-11 19:35:14,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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 19:35:14,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:14,283 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 311 transitions. [2024-09-11 19:35:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-11 19:35:14,283 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:14,283 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:14,295 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-09-11 19:35:14,485 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:14,485 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:14,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:14,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1058464599, now seen corresponding path program 42 times [2024-09-11 19:35:14,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:14,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246759349] [2024-09-11 19:35:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:14,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:14,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:14,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246759349] [2024-09-11 19:35:14,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246759349] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:14,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844171999] [2024-09-11 19:35:14,572 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:35:14,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:14,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:14,573 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 19:35:14,574 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 19:35:14,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-09-11 19:35:14,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:14,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-11 19:35:14,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:14,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:14,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844171999] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:14,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:14,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-09-11 19:35:14,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151154142] [2024-09-11 19:35:14,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:14,734 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-11 19:35:14,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-11 19:35:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:35:14,734 INFO L87 Difference]: Start difference. First operand 273 states and 311 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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 19:35:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:14,874 INFO L93 Difference]: Finished difference Result 284 states and 322 transitions. [2024-09-11 19:35:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:35:14,875 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) Word has length 32 [2024-09-11 19:35:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:14,876 INFO L225 Difference]: With dead ends: 284 [2024-09-11 19:35:14,876 INFO L226 Difference]: Without dead ends: 279 [2024-09-11 19:35:14,876 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:35:14,876 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:14,877 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 102 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:35:14,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-09-11 19:35:14,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 274. [2024-09-11 19:35:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.1428571428571428) internal successors, (312), 273 states have internal predecessors, (312), 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 19:35:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 312 transitions. [2024-09-11 19:35:14,957 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 312 transitions. Word has length 32 [2024-09-11 19:35:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:14,957 INFO L474 AbstractCegarLoop]: Abstraction has 274 states and 312 transitions. [2024-09-11 19:35:14,958 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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 19:35:14,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 312 transitions. [2024-09-11 19:35:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-11 19:35:14,959 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:14,959 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:14,972 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 19:35:15,159 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:15,159 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:15,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1990835628, now seen corresponding path program 43 times [2024-09-11 19:35:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:15,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619735562] [2024-09-11 19:35:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:15,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:15,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619735562] [2024-09-11 19:35:15,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619735562] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:15,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023394426] [2024-09-11 19:35:15,473 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:35:15,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:15,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:15,474 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 19:35:15,476 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 19:35:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:15,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-11 19:35:15,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:15,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:15,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023394426] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:15,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:15,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 38 [2024-09-11 19:35:15,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800304674] [2024-09-11 19:35:15,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:15,902 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-11 19:35:15,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:15,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-11 19:35:15,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1314, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:35:15,902 INFO L87 Difference]: Start difference. First operand 274 states and 312 transitions. Second operand has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 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 19:35:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:16,496 INFO L93 Difference]: Finished difference Result 318 states and 361 transitions. [2024-09-11 19:35:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:35:16,497 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 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 33 [2024-09-11 19:35:16,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:16,498 INFO L225 Difference]: With dead ends: 318 [2024-09-11 19:35:16,498 INFO L226 Difference]: Without dead ends: 310 [2024-09-11 19:35:16,498 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=2209, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 19:35:16,499 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 72 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:16,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 915 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:35:16,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-09-11 19:35:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 282. [2024-09-11 19:35:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.1423487544483986) internal successors, (321), 281 states have internal predecessors, (321), 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 19:35:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 321 transitions. [2024-09-11 19:35:16,572 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 321 transitions. Word has length 33 [2024-09-11 19:35:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:16,572 INFO L474 AbstractCegarLoop]: Abstraction has 282 states and 321 transitions. [2024-09-11 19:35:16,572 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 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 19:35:16,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 321 transitions. [2024-09-11 19:35:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-11 19:35:16,573 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:16,573 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:16,585 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 19:35:16,773 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:16,774 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:16,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:16,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1192631280, now seen corresponding path program 44 times [2024-09-11 19:35:16,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:16,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855344531] [2024-09-11 19:35:16,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:16,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:17,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:17,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855344531] [2024-09-11 19:35:17,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855344531] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:17,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613064383] [2024-09-11 19:35:17,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:35:17,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:17,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:17,031 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 19:35:17,031 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 19:35:17,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:35:17,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:17,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-11 19:35:17,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:17,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:17,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613064383] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:17,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:17,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 36 [2024-09-11 19:35:17,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110519940] [2024-09-11 19:35:17,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:17,424 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-11 19:35:17,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-11 19:35:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:35:17,425 INFO L87 Difference]: Start difference. First operand 282 states and 321 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 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 19:35:17,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:17,848 INFO L93 Difference]: Finished difference Result 297 states and 335 transitions. [2024-09-11 19:35:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:35:17,848 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 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) Word has length 33 [2024-09-11 19:35:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:17,849 INFO L225 Difference]: With dead ends: 297 [2024-09-11 19:35:17,849 INFO L226 Difference]: Without dead ends: 274 [2024-09-11 19:35:17,850 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=1929, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:35:17,850 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 54 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:17,850 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 811 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-09-11 19:35:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2024-09-11 19:35:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.1428571428571428) internal successors, (312), 273 states have internal predecessors, (312), 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 19:35:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 312 transitions. [2024-09-11 19:35:17,932 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 312 transitions. Word has length 33 [2024-09-11 19:35:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:17,933 INFO L474 AbstractCegarLoop]: Abstraction has 274 states and 312 transitions. [2024-09-11 19:35:17,933 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 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 19:35:17,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 312 transitions. [2024-09-11 19:35:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-11 19:35:17,933 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:17,933 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:17,946 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-09-11 19:35:18,134 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:18,134 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:18,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1003734612, now seen corresponding path program 45 times [2024-09-11 19:35:18,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:18,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102065526] [2024-09-11 19:35:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:18,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:18,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:18,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102065526] [2024-09-11 19:35:18,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102065526] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:18,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700259753] [2024-09-11 19:35:18,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:35:18,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:18,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:18,373 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 19:35:18,373 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 19:35:18,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:35:18,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:18,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-11 19:35:18,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:18,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:18,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700259753] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:18,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:18,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 34 [2024-09-11 19:35:18,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058009475] [2024-09-11 19:35:18,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:18,761 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-11 19:35:18,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:18,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-11 19:35:18,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:35:18,762 INFO L87 Difference]: Start difference. First operand 274 states and 312 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 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 19:35:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:19,097 INFO L93 Difference]: Finished difference Result 288 states and 325 transitions. [2024-09-11 19:35:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:35:19,097 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 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 33 [2024-09-11 19:35:19,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:19,098 INFO L225 Difference]: With dead ends: 288 [2024-09-11 19:35:19,099 INFO L226 Difference]: Without dead ends: 264 [2024-09-11 19:35:19,099 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2024-09-11 19:35:19,099 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:19,099 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 564 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-11 19:35:19,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-11 19:35:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.144486692015209) internal successors, (301), 263 states have internal predecessors, (301), 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 19:35:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 301 transitions. [2024-09-11 19:35:19,179 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 301 transitions. Word has length 33 [2024-09-11 19:35:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:19,179 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 301 transitions. [2024-09-11 19:35:19,179 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 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 19:35:19,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 301 transitions. [2024-09-11 19:35:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-11 19:35:19,180 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:19,180 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:19,192 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-11 19:35:19,380 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:19,380 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:19,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:19,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1518143472, now seen corresponding path program 46 times [2024-09-11 19:35:19,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:19,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111547093] [2024-09-11 19:35:19,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:19,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:35:19,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:19,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111547093] [2024-09-11 19:35:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111547093] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627788677] [2024-09-11 19:35:19,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:35:19,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:19,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:19,627 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 19:35:19,629 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 19:35:19,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:35:19,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:19,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-11 19:35:19,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:35:19,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:35:20,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627788677] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:20,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:20,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 32 [2024-09-11 19:35:20,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402070723] [2024-09-11 19:35:20,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:20,009 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-11 19:35:20,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-11 19:35:20,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:35:20,010 INFO L87 Difference]: Start difference. First operand 264 states and 301 transitions. Second operand has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 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 19:35:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:20,278 INFO L93 Difference]: Finished difference Result 286 states and 326 transitions. [2024-09-11 19:35:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:35:20,278 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 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 33 [2024-09-11 19:35:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:20,279 INFO L225 Difference]: With dead ends: 286 [2024-09-11 19:35:20,279 INFO L226 Difference]: Without dead ends: 281 [2024-09-11 19:35:20,280 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=1423, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:35:20,280 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:20,280 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 330 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-09-11 19:35:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 275. [2024-09-11 19:35:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.145985401459854) internal successors, (314), 274 states have internal predecessors, (314), 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 19:35:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 314 transitions. [2024-09-11 19:35:20,355 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 314 transitions. Word has length 33 [2024-09-11 19:35:20,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:20,355 INFO L474 AbstractCegarLoop]: Abstraction has 275 states and 314 transitions. [2024-09-11 19:35:20,355 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 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 19:35:20,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 314 transitions. [2024-09-11 19:35:20,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-11 19:35:20,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:20,356 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:20,372 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-11 19:35:20,556 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-09-11 19:35:20,557 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:20,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:20,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1031087066, now seen corresponding path program 47 times [2024-09-11 19:35:20,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:20,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119273295] [2024-09-11 19:35:20,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:20,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:20,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:20,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119273295] [2024-09-11 19:35:20,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119273295] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:20,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96784963] [2024-09-11 19:35:20,775 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:35:20,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:20,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:20,777 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 19:35:20,777 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 19:35:20,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-11 19:35:20,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:20,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-11 19:35:20,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:21,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:21,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96784963] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:21,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:21,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2024-09-11 19:35:21,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425572718] [2024-09-11 19:35:21,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:21,661 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-11 19:35:21,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:21,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-11 19:35:21,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:35:21,661 INFO L87 Difference]: Start difference. First operand 275 states and 314 transitions. Second operand has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 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 19:35:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:22,309 INFO L93 Difference]: Finished difference Result 392 states and 443 transitions. [2024-09-11 19:35:22,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:35:22,309 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 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 34 [2024-09-11 19:35:22,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:22,311 INFO L225 Difference]: With dead ends: 392 [2024-09-11 19:35:22,311 INFO L226 Difference]: Without dead ends: 356 [2024-09-11 19:35:22,311 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=366, Invalid=2940, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 19:35:22,311 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:22,311 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 349 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:22,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-09-11 19:35:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 304. [2024-09-11 19:35:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.1452145214521452) internal successors, (347), 303 states have internal predecessors, (347), 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 19:35:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 347 transitions. [2024-09-11 19:35:22,405 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 347 transitions. Word has length 34 [2024-09-11 19:35:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:22,405 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 347 transitions. [2024-09-11 19:35:22,405 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 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 19:35:22,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 347 transitions. [2024-09-11 19:35:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-11 19:35:22,406 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:22,406 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:22,418 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 19:35:22,606 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-09-11 19:35:22,607 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:22,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:22,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1271263539, now seen corresponding path program 48 times [2024-09-11 19:35:22,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:22,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635240163] [2024-09-11 19:35:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:22,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635240163] [2024-09-11 19:35:22,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635240163] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945419196] [2024-09-11 19:35:22,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:35:22,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:22,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:22,912 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 19:35:22,912 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 19:35:22,980 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-11 19:35:22,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:22,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-11 19:35:22,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:23,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:23,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945419196] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:23,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:23,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2024-09-11 19:35:23,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561371730] [2024-09-11 19:35:23,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:23,759 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-11 19:35:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-11 19:35:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2024-09-11 19:35:23,760 INFO L87 Difference]: Start difference. First operand 304 states and 347 transitions. Second operand has 45 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 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 19:35:24,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:24,498 INFO L93 Difference]: Finished difference Result 326 states and 373 transitions. [2024-09-11 19:35:24,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-11 19:35:24,499 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 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 34 [2024-09-11 19:35:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:24,500 INFO L225 Difference]: With dead ends: 326 [2024-09-11 19:35:24,500 INFO L226 Difference]: Without dead ends: 308 [2024-09-11 19:35:24,500 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 35 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=252, Invalid=3054, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 19:35:24,501 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:24,501 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 381 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:35:24,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-09-11 19:35:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2024-09-11 19:35:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.1433224755700326) internal successors, (351), 307 states have internal predecessors, (351), 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 19:35:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 351 transitions. [2024-09-11 19:35:24,602 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 351 transitions. Word has length 34 [2024-09-11 19:35:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:24,603 INFO L474 AbstractCegarLoop]: Abstraction has 308 states and 351 transitions. [2024-09-11 19:35:24,603 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 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 19:35:24,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 351 transitions. [2024-09-11 19:35:24,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-11 19:35:24,604 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:24,604 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:24,616 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-09-11 19:35:24,804 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-11 19:35:24,805 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:24,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:24,805 INFO L85 PathProgramCache]: Analyzing trace with hash 211384951, now seen corresponding path program 49 times [2024-09-11 19:35:24,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:24,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598295203] [2024-09-11 19:35:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:24,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:24,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:24,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598295203] [2024-09-11 19:35:24,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598295203] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:24,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214181048] [2024-09-11 19:35:24,876 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:35:24,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:24,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:24,877 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 19:35:24,878 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 19:35:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:24,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-11 19:35:24,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:25,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:25,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214181048] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:25,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:25,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-09-11 19:35:25,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450333989] [2024-09-11 19:35:25,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:25,055 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 19:35:25,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:25,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 19:35:25,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:35:25,056 INFO L87 Difference]: Start difference. First operand 308 states and 351 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 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 19:35:25,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:25,248 INFO L93 Difference]: Finished difference Result 359 states and 413 transitions. [2024-09-11 19:35:25,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:35:25,248 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 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 34 [2024-09-11 19:35:25,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:25,250 INFO L225 Difference]: With dead ends: 359 [2024-09-11 19:35:25,250 INFO L226 Difference]: Without dead ends: 345 [2024-09-11 19:35:25,250 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-09-11 19:35:25,250 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:25,250 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 137 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:35:25,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-09-11 19:35:25,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 336. [2024-09-11 19:35:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.1582089552238806) internal successors, (388), 335 states have internal predecessors, (388), 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 19:35:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 388 transitions. [2024-09-11 19:35:25,357 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 388 transitions. Word has length 34 [2024-09-11 19:35:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:25,357 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 388 transitions. [2024-09-11 19:35:25,358 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 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 19:35:25,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 388 transitions. [2024-09-11 19:35:25,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-11 19:35:25,359 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:25,359 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:25,376 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 19:35:25,559 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:25,560 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:25,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:25,560 INFO L85 PathProgramCache]: Analyzing trace with hash -48686258, now seen corresponding path program 50 times [2024-09-11 19:35:25,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:25,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240737597] [2024-09-11 19:35:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:25,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:25,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:25,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240737597] [2024-09-11 19:35:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240737597] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:25,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58106994] [2024-09-11 19:35:25,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:35:25,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:25,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:25,653 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 19:35:25,654 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 19:35:25,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:35:25,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:25,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-11 19:35:25,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:25,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:35:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58106994] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:25,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:25,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-09-11 19:35:25,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943034504] [2024-09-11 19:35:25,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:25,829 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 19:35:25,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:25,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 19:35:25,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:35:25,829 INFO L87 Difference]: Start difference. First operand 336 states and 388 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 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 19:35:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:26,056 INFO L93 Difference]: Finished difference Result 509 states and 604 transitions. [2024-09-11 19:35:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:35:26,056 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 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 34 [2024-09-11 19:35:26,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:26,058 INFO L225 Difference]: With dead ends: 509 [2024-09-11 19:35:26,058 INFO L226 Difference]: Without dead ends: 394 [2024-09-11 19:35:26,058 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-09-11 19:35:26,058 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:26,059 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 135 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-09-11 19:35:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2024-09-11 19:35:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.1577608142493638) internal successors, (455), 393 states have internal predecessors, (455), 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 19:35:26,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 455 transitions. [2024-09-11 19:35:26,196 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 455 transitions. Word has length 34 [2024-09-11 19:35:26,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:26,196 INFO L474 AbstractCegarLoop]: Abstraction has 394 states and 455 transitions. [2024-09-11 19:35:26,196 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 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 19:35:26,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:26,197 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 455 transitions. [2024-09-11 19:35:26,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:35:26,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:26,197 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:26,209 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 19:35:26,398 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-11 19:35:26,398 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:26,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:26,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1309739303, now seen corresponding path program 51 times [2024-09-11 19:35:26,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:26,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35590641] [2024-09-11 19:35:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:26,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:26,706 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:26,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:26,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35590641] [2024-09-11 19:35:26,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35590641] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:26,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025724935] [2024-09-11 19:35:26,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:35:26,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:26,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:26,708 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 19:35:26,709 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 19:35:26,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-11 19:35:26,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:26,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:35:26,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:27,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:27,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025724935] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:27,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:27,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 41 [2024-09-11 19:35:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061866686] [2024-09-11 19:35:27,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:27,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-11 19:35:27,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:27,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-11 19:35:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1541, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 19:35:27,198 INFO L87 Difference]: Start difference. First operand 394 states and 455 transitions. Second operand has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 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 19:35:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:27,857 INFO L93 Difference]: Finished difference Result 446 states and 513 transitions. [2024-09-11 19:35:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 19:35:27,857 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 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 35 [2024-09-11 19:35:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:27,858 INFO L225 Difference]: With dead ends: 446 [2024-09-11 19:35:27,858 INFO L226 Difference]: Without dead ends: 438 [2024-09-11 19:35:27,863 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=2602, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 19:35:27,864 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 81 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:27,864 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1132 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:35:27,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-09-11 19:35:28,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 402. [2024-09-11 19:35:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.1571072319201996) internal successors, (464), 401 states have internal predecessors, (464), 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 19:35:28,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 464 transitions. [2024-09-11 19:35:28,072 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 464 transitions. Word has length 35 [2024-09-11 19:35:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:28,073 INFO L474 AbstractCegarLoop]: Abstraction has 402 states and 464 transitions. [2024-09-11 19:35:28,073 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 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 19:35:28,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 464 transitions. [2024-09-11 19:35:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:35:28,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:28,074 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:28,096 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-09-11 19:35:28,274 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:28,275 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:28,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2112286503, now seen corresponding path program 52 times [2024-09-11 19:35:28,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:28,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067617583] [2024-09-11 19:35:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:28,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:28,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:28,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067617583] [2024-09-11 19:35:28,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067617583] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:28,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755264632] [2024-09-11 19:35:28,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:35:28,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:28,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:28,663 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 19:35:28,664 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 19:35:28,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:35:28,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:28,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-11 19:35:28,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:29,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755264632] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:29,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 39 [2024-09-11 19:35:29,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164595077] [2024-09-11 19:35:29,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:29,145 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-11 19:35:29,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:29,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-11 19:35:29,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1384, Unknown=0, NotChecked=0, Total=1482 [2024-09-11 19:35:29,146 INFO L87 Difference]: Start difference. First operand 402 states and 464 transitions. Second operand has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 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 19:35:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:29,747 INFO L93 Difference]: Finished difference Result 418 states and 479 transitions. [2024-09-11 19:35:29,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:35:29,748 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 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 35 [2024-09-11 19:35:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:29,749 INFO L225 Difference]: With dead ends: 418 [2024-09-11 19:35:29,749 INFO L226 Difference]: Without dead ends: 394 [2024-09-11 19:35:29,749 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=2298, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 19:35:29,750 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 61 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:29,750 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 998 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:35:29,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-09-11 19:35:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2024-09-11 19:35:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.1577608142493638) internal successors, (455), 393 states have internal predecessors, (455), 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 19:35:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 455 transitions. [2024-09-11 19:35:29,867 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 455 transitions. Word has length 35 [2024-09-11 19:35:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:29,867 INFO L474 AbstractCegarLoop]: Abstraction has 394 states and 455 transitions. [2024-09-11 19:35:29,868 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 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 19:35:29,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 455 transitions. [2024-09-11 19:35:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:35:29,869 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:29,869 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:29,884 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-09-11 19:35:30,069 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:30,069 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:30,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:30,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1988186407, now seen corresponding path program 53 times [2024-09-11 19:35:30,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:30,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731878429] [2024-09-11 19:35:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:30,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:30,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:30,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731878429] [2024-09-11 19:35:30,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731878429] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:30,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577281194] [2024-09-11 19:35:30,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:35:30,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:30,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:30,310 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 19:35:30,310 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 19:35:30,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-11 19:35:30,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:30,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-11 19:35:30,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:30,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:30,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577281194] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:30,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:30,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 37 [2024-09-11 19:35:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367982488] [2024-09-11 19:35:30,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:30,775 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-11 19:35:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-11 19:35:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:35:30,776 INFO L87 Difference]: Start difference. First operand 394 states and 455 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 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 19:35:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:31,231 INFO L93 Difference]: Finished difference Result 409 states and 469 transitions. [2024-09-11 19:35:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:35:31,231 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 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 35 [2024-09-11 19:35:31,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:31,233 INFO L225 Difference]: With dead ends: 409 [2024-09-11 19:35:31,233 INFO L226 Difference]: Without dead ends: 384 [2024-09-11 19:35:31,233 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=2012, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 19:35:31,233 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:31,233 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 660 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:31,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-09-11 19:35:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-09-11 19:35:31,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.1592689295039165) internal successors, (444), 383 states have internal predecessors, (444), 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 19:35:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 444 transitions. [2024-09-11 19:35:31,343 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 444 transitions. Word has length 35 [2024-09-11 19:35:31,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:31,343 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 444 transitions. [2024-09-11 19:35:31,343 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 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 19:35:31,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:31,343 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 444 transitions. [2024-09-11 19:35:31,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:35:31,344 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:31,344 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:31,361 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 19:35:31,544 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:31,545 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:31,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 915980382, now seen corresponding path program 54 times [2024-09-11 19:35:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:31,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709236358] [2024-09-11 19:35:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-11 19:35:31,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709236358] [2024-09-11 19:35:31,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709236358] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919798257] [2024-09-11 19:35:31,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:35:31,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:31,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:31,703 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 19:35:31,704 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 19:35:31,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:35:31,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:31,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:35:31,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-11 19:35:31,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-11 19:35:32,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919798257] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:32,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:32,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-09-11 19:35:32,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956566175] [2024-09-11 19:35:32,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:32,149 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 19:35:32,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 19:35:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:35:32,149 INFO L87 Difference]: Start difference. First operand 384 states and 444 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 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 19:35:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:32,497 INFO L93 Difference]: Finished difference Result 472 states and 548 transitions. [2024-09-11 19:35:32,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 19:35:32,497 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 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 35 [2024-09-11 19:35:32,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:32,499 INFO L225 Difference]: With dead ends: 472 [2024-09-11 19:35:32,499 INFO L226 Difference]: Without dead ends: 420 [2024-09-11 19:35:32,499 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:35:32,500 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:32,500 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 219 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:32,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-09-11 19:35:32,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2024-09-11 19:35:32,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.1431980906921242) internal successors, (479), 419 states have internal predecessors, (479), 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 19:35:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 479 transitions. [2024-09-11 19:35:32,627 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 479 transitions. Word has length 35 [2024-09-11 19:35:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:32,628 INFO L474 AbstractCegarLoop]: Abstraction has 420 states and 479 transitions. [2024-09-11 19:35:32,628 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 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 19:35:32,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 479 transitions. [2024-09-11 19:35:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:35:32,628 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:32,629 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:32,640 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-09-11 19:35:32,829 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-09-11 19:35:32,829 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:32,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:32,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1695635673, now seen corresponding path program 55 times [2024-09-11 19:35:32,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:32,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040842096] [2024-09-11 19:35:32,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:32,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:35:33,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040842096] [2024-09-11 19:35:33,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040842096] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9106224] [2024-09-11 19:35:33,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:35:33,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:33,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:33,093 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 19:35:33,094 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 19:35:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:33,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-11 19:35:33,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:35:33,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:35:33,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9106224] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:33,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:33,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 35 [2024-09-11 19:35:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836050310] [2024-09-11 19:35:33,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:33,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-11 19:35:33,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-11 19:35:33,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 19:35:33,579 INFO L87 Difference]: Start difference. First operand 420 states and 479 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 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 19:35:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:33,964 INFO L93 Difference]: Finished difference Result 453 states and 516 transitions. [2024-09-11 19:35:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:35:33,964 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 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 35 [2024-09-11 19:35:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:33,966 INFO L225 Difference]: With dead ends: 453 [2024-09-11 19:35:33,966 INFO L226 Difference]: Without dead ends: 427 [2024-09-11 19:35:33,966 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=1744, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:35:33,966 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:33,966 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 442 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-09-11 19:35:34,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 417. [2024-09-11 19:35:34,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.1466346153846154) internal successors, (477), 416 states have internal predecessors, (477), 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 19:35:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 477 transitions. [2024-09-11 19:35:34,088 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 477 transitions. Word has length 35 [2024-09-11 19:35:34,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:34,088 INFO L474 AbstractCegarLoop]: Abstraction has 417 states and 477 transitions. [2024-09-11 19:35:34,088 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 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 19:35:34,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:34,089 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 477 transitions. [2024-09-11 19:35:34,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:35:34,089 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:34,089 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:34,105 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 19:35:34,290 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:34,290 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:34,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:34,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1914782398, now seen corresponding path program 56 times [2024-09-11 19:35:34,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:34,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851245094] [2024-09-11 19:35:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-11 19:35:34,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:34,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851245094] [2024-09-11 19:35:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851245094] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:34,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611065578] [2024-09-11 19:35:34,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:35:34,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:34,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:34,434 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 19:35:34,435 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 19:35:34,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:35:34,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:34,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:35:34,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-11 19:35:34,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-11 19:35:34,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611065578] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:34,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:34,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-09-11 19:35:34,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631782798] [2024-09-11 19:35:34,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:34,890 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 19:35:34,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 19:35:34,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:35:34,891 INFO L87 Difference]: Start difference. First operand 417 states and 477 transitions. Second operand has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 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 19:35:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:35,275 INFO L93 Difference]: Finished difference Result 445 states and 505 transitions. [2024-09-11 19:35:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 19:35:35,275 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 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 35 [2024-09-11 19:35:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:35,276 INFO L225 Difference]: With dead ends: 445 [2024-09-11 19:35:35,276 INFO L226 Difference]: Without dead ends: 417 [2024-09-11 19:35:35,277 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:35:35,277 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:35,277 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 265 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:35,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-09-11 19:35:35,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2024-09-11 19:35:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.1274038461538463) internal successors, (469), 416 states have internal predecessors, (469), 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 19:35:35,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 469 transitions. [2024-09-11 19:35:35,399 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 469 transitions. Word has length 35 [2024-09-11 19:35:35,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:35,399 INFO L474 AbstractCegarLoop]: Abstraction has 417 states and 469 transitions. [2024-09-11 19:35:35,399 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 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 19:35:35,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:35,400 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 469 transitions. [2024-09-11 19:35:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-11 19:35:35,400 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:35,401 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:35,413 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 19:35:35,602 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-09-11 19:35:35,602 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:35,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1792479309, now seen corresponding path program 57 times [2024-09-11 19:35:35,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:35,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173172109] [2024-09-11 19:35:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:35,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:35,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173172109] [2024-09-11 19:35:35,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173172109] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:35,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147570100] [2024-09-11 19:35:35,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:35:35,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:35,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:35,862 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 19:35:35,863 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 19:35:35,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-11 19:35:35,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:35,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-11 19:35:35,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:36,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:36,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147570100] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:36,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:36,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-09-11 19:35:36,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969477747] [2024-09-11 19:35:36,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:36,878 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-11 19:35:36,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:36,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-11 19:35:36,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2217, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 19:35:36,879 INFO L87 Difference]: Start difference. First operand 417 states and 469 transitions. Second operand has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 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 19:35:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:37,764 INFO L93 Difference]: Finished difference Result 597 states and 664 transitions. [2024-09-11 19:35:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:35:37,764 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 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 36 [2024-09-11 19:35:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:37,766 INFO L225 Difference]: With dead ends: 597 [2024-09-11 19:35:37,766 INFO L226 Difference]: Without dead ends: 557 [2024-09-11 19:35:37,767 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=443, Invalid=3717, Unknown=0, NotChecked=0, Total=4160 [2024-09-11 19:35:37,767 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:37,767 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 395 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:37,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-09-11 19:35:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 461. [2024-09-11 19:35:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.126086956521739) internal successors, (518), 460 states have internal predecessors, (518), 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 19:35:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 518 transitions. [2024-09-11 19:35:37,915 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 518 transitions. Word has length 36 [2024-09-11 19:35:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:37,915 INFO L474 AbstractCegarLoop]: Abstraction has 461 states and 518 transitions. [2024-09-11 19:35:37,916 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 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 19:35:37,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 518 transitions. [2024-09-11 19:35:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-11 19:35:37,917 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:37,917 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:37,934 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-09-11 19:35:38,117 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:38,117 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:38,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:38,118 INFO L85 PathProgramCache]: Analyzing trace with hash -860912710, now seen corresponding path program 58 times [2024-09-11 19:35:38,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:38,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303960824] [2024-09-11 19:35:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:38,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:38,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:38,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303960824] [2024-09-11 19:35:38,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303960824] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:38,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893939232] [2024-09-11 19:35:38,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:35:38,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:38,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:38,484 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 19:35:38,486 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 19:35:38,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:35:38,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:38,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-11 19:35:38,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:39,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:39,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893939232] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:39,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:39,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-09-11 19:35:39,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188151435] [2024-09-11 19:35:39,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:39,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-11 19:35:39,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:39,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-11 19:35:39,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2218, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 19:35:39,585 INFO L87 Difference]: Start difference. First operand 461 states and 518 transitions. Second operand has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 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 19:35:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:40,558 INFO L93 Difference]: Finished difference Result 486 states and 548 transitions. [2024-09-11 19:35:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:35:40,558 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 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 36 [2024-09-11 19:35:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:40,560 INFO L225 Difference]: With dead ends: 486 [2024-09-11 19:35:40,560 INFO L226 Difference]: Without dead ends: 466 [2024-09-11 19:35:40,560 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 35 SyntacticMatches, 9 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=273, Invalid=3759, Unknown=0, NotChecked=0, Total=4032 [2024-09-11 19:35:40,561 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:40,561 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 462 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:35:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-09-11 19:35:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2024-09-11 19:35:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.124731182795699) internal successors, (523), 465 states have internal predecessors, (523), 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 19:35:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 523 transitions. [2024-09-11 19:35:40,710 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 523 transitions. Word has length 36 [2024-09-11 19:35:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:40,710 INFO L474 AbstractCegarLoop]: Abstraction has 466 states and 523 transitions. [2024-09-11 19:35:40,710 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 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 19:35:40,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 523 transitions. [2024-09-11 19:35:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-11 19:35:40,711 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:40,711 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:40,723 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-09-11 19:35:40,911 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-11 19:35:40,912 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:40,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:40,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1653966574, now seen corresponding path program 59 times [2024-09-11 19:35:40,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:40,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027138940] [2024-09-11 19:35:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:40,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:40,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:40,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027138940] [2024-09-11 19:35:40,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027138940] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:40,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114194695] [2024-09-11 19:35:40,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:35:40,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:40,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:41,000 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:41,000 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-11 19:35:41,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:35:41,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:41,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 19:35:41,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:41,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:41,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114194695] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:41,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:41,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-09-11 19:35:41,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637348233] [2024-09-11 19:35:41,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:41,193 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-11 19:35:41,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:41,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-11 19:35:41,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:35:41,194 INFO L87 Difference]: Start difference. First operand 466 states and 523 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 19:35:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:41,459 INFO L93 Difference]: Finished difference Result 552 states and 624 transitions. [2024-09-11 19:35:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:35:41,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 36 [2024-09-11 19:35:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:41,461 INFO L225 Difference]: With dead ends: 552 [2024-09-11 19:35:41,461 INFO L226 Difference]: Without dead ends: 454 [2024-09-11 19:35:41,462 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:35:41,462 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 41 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:41,462 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 166 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:35:41,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-09-11 19:35:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2024-09-11 19:35:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.119205298013245) internal successors, (507), 453 states have internal predecessors, (507), 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 19:35:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 507 transitions. [2024-09-11 19:35:41,622 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 507 transitions. Word has length 36 [2024-09-11 19:35:41,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:41,622 INFO L474 AbstractCegarLoop]: Abstraction has 454 states and 507 transitions. [2024-09-11 19:35:41,622 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 19:35:41,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 507 transitions. [2024-09-11 19:35:41,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-11 19:35:41,623 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:41,623 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:41,638 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-09-11 19:35:41,823 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:41,824 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:41,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1984619611, now seen corresponding path program 60 times [2024-09-11 19:35:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:41,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634224542] [2024-09-11 19:35:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:41,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:41,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:41,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634224542] [2024-09-11 19:35:41,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634224542] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:41,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358225836] [2024-09-11 19:35:41,912 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:35:41,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:41,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:41,913 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:41,914 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-11 19:35:41,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:35:41,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:41,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 19:35:41,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:42,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:42,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358225836] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:42,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:42,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-09-11 19:35:42,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137643331] [2024-09-11 19:35:42,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:42,113 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-11 19:35:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-11 19:35:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:35:42,114 INFO L87 Difference]: Start difference. First operand 454 states and 507 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 19:35:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:42,380 INFO L93 Difference]: Finished difference Result 469 states and 522 transitions. [2024-09-11 19:35:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:35:42,380 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 36 [2024-09-11 19:35:42,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:42,382 INFO L225 Difference]: With dead ends: 469 [2024-09-11 19:35:42,382 INFO L226 Difference]: Without dead ends: 464 [2024-09-11 19:35:42,382 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:35:42,382 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 32 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:42,382 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 176 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:35:42,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-09-11 19:35:42,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 455. [2024-09-11 19:35:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.118942731277533) internal successors, (508), 454 states have internal predecessors, (508), 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 19:35:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 508 transitions. [2024-09-11 19:35:42,530 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 508 transitions. Word has length 36 [2024-09-11 19:35:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:42,531 INFO L474 AbstractCegarLoop]: Abstraction has 455 states and 508 transitions. [2024-09-11 19:35:42,531 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 19:35:42,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:42,531 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 508 transitions. [2024-09-11 19:35:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:35:42,531 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:42,532 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:42,544 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-09-11 19:35:42,732 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-11 19:35:42,732 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:42,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:42,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1473765492, now seen corresponding path program 61 times [2024-09-11 19:35:42,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:42,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232522215] [2024-09-11 19:35:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:42,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:43,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:43,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232522215] [2024-09-11 19:35:43,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232522215] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:43,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403684414] [2024-09-11 19:35:43,127 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:35:43,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:43,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:43,128 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:43,129 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-11 19:35:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:43,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-11 19:35:43,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:43,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:35:43,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403684414] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:43,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:43,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2024-09-11 19:35:43,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43371103] [2024-09-11 19:35:43,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:43,647 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-11 19:35:43,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:43,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-11 19:35:43,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1786, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:35:43,647 INFO L87 Difference]: Start difference. First operand 455 states and 508 transitions. Second operand has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 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 19:35:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:44,414 INFO L93 Difference]: Finished difference Result 510 states and 569 transitions. [2024-09-11 19:35:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 19:35:44,415 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 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 37 [2024-09-11 19:35:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:44,416 INFO L225 Difference]: With dead ends: 510 [2024-09-11 19:35:44,416 INFO L226 Difference]: Without dead ends: 502 [2024-09-11 19:35:44,417 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=3027, Unknown=0, NotChecked=0, Total=3192 [2024-09-11 19:35:44,417 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 91 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:44,417 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1275 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:35:44,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-09-11 19:35:44,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 463. [2024-09-11 19:35:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.119047619047619) internal successors, (517), 462 states have internal predecessors, (517), 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 19:35:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 517 transitions. [2024-09-11 19:35:44,570 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 517 transitions. Word has length 37 [2024-09-11 19:35:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:44,570 INFO L474 AbstractCegarLoop]: Abstraction has 463 states and 517 transitions. [2024-09-11 19:35:44,570 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 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 19:35:44,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:44,571 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 517 transitions. [2024-09-11 19:35:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:35:44,571 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:44,571 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:44,583 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-09-11 19:35:44,771 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2024-09-11 19:35:44,772 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:44,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash -852229904, now seen corresponding path program 62 times [2024-09-11 19:35:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:44,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721777268] [2024-09-11 19:35:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:44,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:45,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:45,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721777268] [2024-09-11 19:35:45,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721777268] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:45,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032309772] [2024-09-11 19:35:45,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:35:45,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:45,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:45,180 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:45,182 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-11 19:35:45,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:35:45,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:45,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:35:45,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:45,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:35:45,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032309772] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:45,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:45,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 42 [2024-09-11 19:35:45,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344670676] [2024-09-11 19:35:45,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:45,771 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 19:35:45,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:45,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 19:35:45,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:35:45,772 INFO L87 Difference]: Start difference. First operand 463 states and 517 transitions. Second operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 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 19:35:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:46,498 INFO L93 Difference]: Finished difference Result 480 states and 533 transitions. [2024-09-11 19:35:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 19:35:46,499 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 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 37 [2024-09-11 19:35:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:46,500 INFO L225 Difference]: With dead ends: 480 [2024-09-11 19:35:46,500 INFO L226 Difference]: Without dead ends: 455 [2024-09-11 19:35:46,501 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=2699, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:35:46,501 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 68 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:46,501 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1141 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:35:46,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-09-11 19:35:46,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2024-09-11 19:35:46,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.118942731277533) internal successors, (508), 454 states have internal predecessors, (508), 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 19:35:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 508 transitions. [2024-09-11 19:35:46,659 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 508 transitions. Word has length 37 [2024-09-11 19:35:46,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:46,659 INFO L474 AbstractCegarLoop]: Abstraction has 455 states and 508 transitions. [2024-09-11 19:35:46,659 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 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 19:35:46,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 508 transitions. [2024-09-11 19:35:46,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:35:46,660 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:46,660 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:46,672 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-09-11 19:35:46,861 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:46,861 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:46,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:46,861 INFO L85 PathProgramCache]: Analyzing trace with hash 885730188, now seen corresponding path program 63 times [2024-09-11 19:35:46,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:46,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164934999] [2024-09-11 19:35:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:46,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:47,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:47,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164934999] [2024-09-11 19:35:47,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164934999] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:47,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154865356] [2024-09-11 19:35:47,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:35:47,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:47,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:47,134 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:47,135 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-11 19:35:47,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:35:47,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:47,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-11 19:35:47,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:47,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:35:47,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154865356] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:47,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:47,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 40 [2024-09-11 19:35:47,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151346901] [2024-09-11 19:35:47,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:47,621 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-11 19:35:47,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-11 19:35:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1456, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:35:47,621 INFO L87 Difference]: Start difference. First operand 455 states and 508 transitions. Second operand has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 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 19:35:48,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:48,210 INFO L93 Difference]: Finished difference Result 471 states and 523 transitions. [2024-09-11 19:35:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:35:48,211 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 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 37 [2024-09-11 19:35:48,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:48,212 INFO L225 Difference]: With dead ends: 471 [2024-09-11 19:35:48,212 INFO L226 Difference]: Without dead ends: 445 [2024-09-11 19:35:48,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=2389, Unknown=0, NotChecked=0, Total=2550 [2024-09-11 19:35:48,213 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:48,213 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 873 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:35:48,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-09-11 19:35:48,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2024-09-11 19:35:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1193693693693694) internal successors, (497), 444 states have internal predecessors, (497), 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 19:35:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 497 transitions. [2024-09-11 19:35:48,383 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 497 transitions. Word has length 37 [2024-09-11 19:35:48,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:48,384 INFO L474 AbstractCegarLoop]: Abstraction has 445 states and 497 transitions. [2024-09-11 19:35:48,384 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 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 19:35:48,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:48,384 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 497 transitions. [2024-09-11 19:35:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:35:48,384 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:48,385 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:48,396 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-09-11 19:35:48,585 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:48,585 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:48,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1826129136, now seen corresponding path program 64 times [2024-09-11 19:35:48,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:48,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536076458] [2024-09-11 19:35:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:48,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:35:48,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:48,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536076458] [2024-09-11 19:35:48,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536076458] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:48,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434580696] [2024-09-11 19:35:48,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:35:48,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:48,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:48,824 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:48,824 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-11 19:35:48,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:35:48,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:48,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-11 19:35:48,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:49,185 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:35:49,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:35:49,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434580696] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:49,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:49,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 38 [2024-09-11 19:35:49,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211760451] [2024-09-11 19:35:49,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:49,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-11 19:35:49,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-11 19:35:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1303, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:35:49,302 INFO L87 Difference]: Start difference. First operand 445 states and 497 transitions. Second operand has 38 states, 38 states have (on average 1.5) internal successors, (57), 38 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 19:35:49,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:49,819 INFO L93 Difference]: Finished difference Result 460 states and 511 transitions. [2024-09-11 19:35:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:35:49,819 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5) internal successors, (57), 38 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) Word has length 37 [2024-09-11 19:35:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:49,821 INFO L225 Difference]: With dead ends: 460 [2024-09-11 19:35:49,821 INFO L226 Difference]: Without dead ends: 433 [2024-09-11 19:35:49,821 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=2097, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:35:49,821 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 37 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:49,821 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 680 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:49,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-09-11 19:35:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2024-09-11 19:35:49,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.1203703703703705) internal successors, (484), 432 states have internal predecessors, (484), 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 19:35:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 484 transitions. [2024-09-11 19:35:49,961 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 484 transitions. Word has length 37 [2024-09-11 19:35:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:49,962 INFO L474 AbstractCegarLoop]: Abstraction has 433 states and 484 transitions. [2024-09-11 19:35:49,962 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5) internal successors, (57), 38 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 19:35:49,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 484 transitions. [2024-09-11 19:35:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:35:49,962 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:49,962 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:49,974 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-09-11 19:35:50,163 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2024-09-11 19:35:50,163 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:50,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:50,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1422858124, now seen corresponding path program 65 times [2024-09-11 19:35:50,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:50,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093964467] [2024-09-11 19:35:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:50,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:35:50,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:50,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093964467] [2024-09-11 19:35:50,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093964467] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:50,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115707668] [2024-09-11 19:35:50,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:35:50,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:50,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:50,439 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:50,440 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-11 19:35:50,516 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:35:50,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:50,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:35:50,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:35:50,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:35:51,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115707668] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:51,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:51,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 20] total 41 [2024-09-11 19:35:51,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349051585] [2024-09-11 19:35:51,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:51,019 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-11 19:35:51,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:51,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-11 19:35:51,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 19:35:51,019 INFO L87 Difference]: Start difference. First operand 433 states and 484 transitions. Second operand has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 41 states have internal predecessors, (61), 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 19:35:51,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:51,631 INFO L93 Difference]: Finished difference Result 457 states and 511 transitions. [2024-09-11 19:35:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-11 19:35:51,631 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 41 states have internal predecessors, (61), 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 37 [2024-09-11 19:35:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:51,633 INFO L225 Difference]: With dead ends: 457 [2024-09-11 19:35:51,633 INFO L226 Difference]: Without dead ends: 452 [2024-09-11 19:35:51,633 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=2768, Unknown=0, NotChecked=0, Total=2970 [2024-09-11 19:35:51,634 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:51,634 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 465 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:35:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-09-11 19:35:51,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 445. [2024-09-11 19:35:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1216216216216217) internal successors, (498), 444 states have internal predecessors, (498), 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 19:35:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 498 transitions. [2024-09-11 19:35:51,782 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 498 transitions. Word has length 37 [2024-09-11 19:35:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:51,782 INFO L474 AbstractCegarLoop]: Abstraction has 445 states and 498 transitions. [2024-09-11 19:35:51,782 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 41 states have internal predecessors, (61), 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 19:35:51,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 498 transitions. [2024-09-11 19:35:51,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-11 19:35:51,783 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:51,783 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:51,794 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-09-11 19:35:51,983 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:51,983 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:51,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:51,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1002634746, now seen corresponding path program 66 times [2024-09-11 19:35:51,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:51,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633002956] [2024-09-11 19:35:51,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:51,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:52,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633002956] [2024-09-11 19:35:52,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633002956] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203674126] [2024-09-11 19:35:52,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:35:52,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:52,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:52,285 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:52,286 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-11 19:35:52,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-09-11 19:35:52,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:52,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-11 19:35:52,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:52,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:53,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203674126] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:53,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:53,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2024-09-11 19:35:53,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445106819] [2024-09-11 19:35:53,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:53,440 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-11 19:35:53,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:53,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-11 19:35:53,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2706, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:35:53,440 INFO L87 Difference]: Start difference. First operand 445 states and 498 transitions. Second operand has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 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 19:35:54,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:54,358 INFO L93 Difference]: Finished difference Result 644 states and 712 transitions. [2024-09-11 19:35:54,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:35:54,358 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 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 38 [2024-09-11 19:35:54,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:54,360 INFO L225 Difference]: With dead ends: 644 [2024-09-11 19:35:54,360 INFO L226 Difference]: Without dead ends: 602 [2024-09-11 19:35:54,360 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 36 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=534, Invalid=4578, Unknown=0, NotChecked=0, Total=5112 [2024-09-11 19:35:54,361 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:54,361 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 400 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:35:54,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-09-11 19:35:54,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 490. [2024-09-11 19:35:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.1206543967280163) internal successors, (548), 489 states have internal predecessors, (548), 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 19:35:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 548 transitions. [2024-09-11 19:35:54,533 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 548 transitions. Word has length 38 [2024-09-11 19:35:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:54,533 INFO L474 AbstractCegarLoop]: Abstraction has 490 states and 548 transitions. [2024-09-11 19:35:54,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 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 19:35:54,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 548 transitions. [2024-09-11 19:35:54,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-11 19:35:54,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:54,534 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:54,547 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-09-11 19:35:54,735 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-09-11 19:35:54,735 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:54,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash 351860781, now seen corresponding path program 67 times [2024-09-11 19:35:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93347023] [2024-09-11 19:35:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:54,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:55,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:55,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93347023] [2024-09-11 19:35:55,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93347023] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:55,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520967183] [2024-09-11 19:35:55,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:35:55,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:55,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:55,107 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:55,108 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-11 19:35:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:55,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-11 19:35:55,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:55,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:35:56,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520967183] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:56,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:56,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 55 [2024-09-11 19:35:56,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3305049] [2024-09-11 19:35:56,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:56,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-11 19:35:56,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-11 19:35:56,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2808, Unknown=0, NotChecked=0, Total=2970 [2024-09-11 19:35:56,393 INFO L87 Difference]: Start difference. First operand 490 states and 548 transitions. Second operand has 55 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 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 19:35:57,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:57,660 INFO L93 Difference]: Finished difference Result 516 states and 579 transitions. [2024-09-11 19:35:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-11 19:35:57,661 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 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 38 [2024-09-11 19:35:57,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:57,662 INFO L225 Difference]: With dead ends: 516 [2024-09-11 19:35:57,662 INFO L226 Difference]: Without dead ends: 495 [2024-09-11 19:35:57,663 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 35 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=328, Invalid=4784, Unknown=0, NotChecked=0, Total=5112 [2024-09-11 19:35:57,663 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:57,663 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 538 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:35:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-09-11 19:35:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2024-09-11 19:35:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.1194331983805668) internal successors, (553), 494 states have internal predecessors, (553), 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 19:35:57,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 553 transitions. [2024-09-11 19:35:57,841 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 553 transitions. Word has length 38 [2024-09-11 19:35:57,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:57,841 INFO L474 AbstractCegarLoop]: Abstraction has 495 states and 553 transitions. [2024-09-11 19:35:57,841 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 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 19:35:57,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:57,841 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 553 transitions. [2024-09-11 19:35:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-11 19:35:57,842 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:57,842 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:57,854 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-09-11 19:35:58,042 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:58,042 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:58,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:58,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1188121211, now seen corresponding path program 68 times [2024-09-11 19:35:58,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:58,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259748985] [2024-09-11 19:35:58,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:58,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:58,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259748985] [2024-09-11 19:35:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259748985] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569496987] [2024-09-11 19:35:58,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:35:58,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:58,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:58,161 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:58,163 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-11 19:35:58,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:35:58,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:58,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:35:58,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:58,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:58,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569496987] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:58,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:58,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-09-11 19:35:58,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119456024] [2024-09-11 19:35:58,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:58,457 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-11 19:35:58,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:58,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-11 19:35:58,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:35:58,458 INFO L87 Difference]: Start difference. First operand 495 states and 553 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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 19:35:58,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:58,866 INFO L93 Difference]: Finished difference Result 558 states and 629 transitions. [2024-09-11 19:35:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-11 19:35:58,867 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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 38 [2024-09-11 19:35:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:58,869 INFO L225 Difference]: With dead ends: 558 [2024-09-11 19:35:58,869 INFO L226 Difference]: Without dead ends: 543 [2024-09-11 19:35:58,869 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:35:58,870 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:58,870 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 130 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-09-11 19:35:59,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 529. [2024-09-11 19:35:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.1325757575757576) internal successors, (598), 528 states have internal predecessors, (598), 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 19:35:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 598 transitions. [2024-09-11 19:35:59,060 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 598 transitions. Word has length 38 [2024-09-11 19:35:59,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:59,060 INFO L474 AbstractCegarLoop]: Abstraction has 529 states and 598 transitions. [2024-09-11 19:35:59,060 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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 19:35:59,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 598 transitions. [2024-09-11 19:35:59,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-11 19:35:59,061 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:59,061 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:59,073 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2024-09-11 19:35:59,261 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:59,262 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:59,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1446536530, now seen corresponding path program 69 times [2024-09-11 19:35:59,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:59,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107701859] [2024-09-11 19:35:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:59,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:59,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107701859] [2024-09-11 19:35:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107701859] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:35:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507678649] [2024-09-11 19:35:59,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:35:59,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:59,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:59,359 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:35:59,360 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-11 19:35:59,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:35:59,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:59,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:35:59,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:59,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-11 19:35:59,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507678649] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:59,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:59,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-09-11 19:35:59,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116956169] [2024-09-11 19:35:59,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:59,576 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-11 19:35:59,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:59,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-11 19:35:59,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:35:59,577 INFO L87 Difference]: Start difference. First operand 529 states and 598 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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 19:35:59,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:59,950 INFO L93 Difference]: Finished difference Result 762 states and 884 transitions. [2024-09-11 19:35:59,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-11 19:35:59,951 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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 38 [2024-09-11 19:35:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:59,953 INFO L225 Difference]: With dead ends: 762 [2024-09-11 19:35:59,953 INFO L226 Difference]: Without dead ends: 611 [2024-09-11 19:35:59,953 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:35:59,953 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:59,953 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 140 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-09-11 19:36:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2024-09-11 19:36:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.1327868852459015) internal successors, (691), 610 states have internal predecessors, (691), 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 19:36:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 691 transitions. [2024-09-11 19:36:00,179 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 691 transitions. Word has length 38 [2024-09-11 19:36:00,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:00,179 INFO L474 AbstractCegarLoop]: Abstraction has 611 states and 691 transitions. [2024-09-11 19:36:00,179 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 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 19:36:00,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 691 transitions. [2024-09-11 19:36:00,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:36:00,180 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:00,180 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:00,192 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-09-11 19:36:00,380 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:00,381 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:00,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:00,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1762474361, now seen corresponding path program 70 times [2024-09-11 19:36:00,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:00,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165547446] [2024-09-11 19:36:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:00,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:36:00,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:00,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165547446] [2024-09-11 19:36:00,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165547446] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:00,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349296776] [2024-09-11 19:36:00,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:36:00,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:00,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:00,776 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:00,778 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-11 19:36:00,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:36:00,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:00,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-09-11 19:36:00,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:36:01,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:36:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349296776] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:01,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 47 [2024-09-11 19:36:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882751802] [2024-09-11 19:36:01,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:01,349 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-11 19:36:01,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:01,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-11 19:36:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2049, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 19:36:01,350 INFO L87 Difference]: Start difference. First operand 611 states and 691 transitions. Second operand has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 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 19:36:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:02,322 INFO L93 Difference]: Finished difference Result 675 states and 762 transitions. [2024-09-11 19:36:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 19:36:02,322 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 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) Word has length 39 [2024-09-11 19:36:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:02,324 INFO L225 Difference]: With dead ends: 675 [2024-09-11 19:36:02,324 INFO L226 Difference]: Without dead ends: 667 [2024-09-11 19:36:02,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2024-09-11 19:36:02,325 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 100 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:02,325 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1583 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:36:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-09-11 19:36:02,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 619. [2024-09-11 19:36:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 1.132686084142395) internal successors, (700), 618 states have internal predecessors, (700), 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 19:36:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 700 transitions. [2024-09-11 19:36:02,550 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 700 transitions. Word has length 39 [2024-09-11 19:36:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:02,550 INFO L474 AbstractCegarLoop]: Abstraction has 619 states and 700 transitions. [2024-09-11 19:36:02,550 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 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 19:36:02,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 700 transitions. [2024-09-11 19:36:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:36:02,551 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:02,551 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:02,563 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:02,751 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-09-11 19:36:02,751 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:02,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash -859199623, now seen corresponding path program 71 times [2024-09-11 19:36:02,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:02,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594356394] [2024-09-11 19:36:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:36:03,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594356394] [2024-09-11 19:36:03,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594356394] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:03,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056633961] [2024-09-11 19:36:03,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:36:03,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:03,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:03,113 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:03,114 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-11 19:36:03,193 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-11 19:36:03,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:03,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-11 19:36:03,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:36:03,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:36:03,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056633961] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:03,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:03,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 45 [2024-09-11 19:36:03,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530472745] [2024-09-11 19:36:03,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:03,683 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-11 19:36:03,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:03,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-11 19:36:03,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1868, Unknown=0, NotChecked=0, Total=1980 [2024-09-11 19:36:03,684 INFO L87 Difference]: Start difference. First operand 619 states and 700 transitions. Second operand has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 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 19:36:04,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:04,532 INFO L93 Difference]: Finished difference Result 637 states and 717 transitions. [2024-09-11 19:36:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 19:36:04,532 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 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 19:36:04,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:04,534 INFO L225 Difference]: With dead ends: 637 [2024-09-11 19:36:04,534 INFO L226 Difference]: Without dead ends: 611 [2024-09-11 19:36:04,534 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=3132, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 19:36:04,535 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 79 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:04,535 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1229 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:36:04,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-09-11 19:36:04,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2024-09-11 19:36:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.1327868852459015) internal successors, (691), 610 states have internal predecessors, (691), 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 19:36:04,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 691 transitions. [2024-09-11 19:36:04,760 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 691 transitions. Word has length 39 [2024-09-11 19:36:04,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:04,760 INFO L474 AbstractCegarLoop]: Abstraction has 611 states and 691 transitions. [2024-09-11 19:36:04,760 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 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 19:36:04,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:04,760 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 691 transitions. [2024-09-11 19:36:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:36:04,761 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:04,761 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:04,773 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-09-11 19:36:04,961 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:04,962 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:04,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1719435641, now seen corresponding path program 72 times [2024-09-11 19:36:04,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:04,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184129181] [2024-09-11 19:36:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:04,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:36:05,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:05,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184129181] [2024-09-11 19:36:05,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184129181] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:05,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429377110] [2024-09-11 19:36:05,276 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:36:05,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:05,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:05,277 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:05,278 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-11 19:36:05,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:36:05,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:05,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:36:05,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:36:05,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:36:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429377110] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:05,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:05,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 43 [2024-09-11 19:36:05,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967826882] [2024-09-11 19:36:05,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:05,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-11 19:36:05,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:05,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-11 19:36:05,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1695, Unknown=0, NotChecked=0, Total=1806 [2024-09-11 19:36:05,839 INFO L87 Difference]: Start difference. First operand 611 states and 691 transitions. Second operand has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 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 19:36:06,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:06,575 INFO L93 Difference]: Finished difference Result 628 states and 707 transitions. [2024-09-11 19:36:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 19:36:06,575 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 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 19:36:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:06,577 INFO L225 Difference]: With dead ends: 628 [2024-09-11 19:36:06,577 INFO L226 Difference]: Without dead ends: 601 [2024-09-11 19:36:06,577 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=2798, Unknown=0, NotChecked=0, Total=2970 [2024-09-11 19:36:06,578 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 64 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:06,578 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1019 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:36:06,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-09-11 19:36:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2024-09-11 19:36:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.1333333333333333) internal successors, (680), 600 states have internal predecessors, (680), 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 19:36:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 680 transitions. [2024-09-11 19:36:06,795 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 680 transitions. Word has length 39 [2024-09-11 19:36:06,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:06,795 INFO L474 AbstractCegarLoop]: Abstraction has 601 states and 680 transitions. [2024-09-11 19:36:06,795 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 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 19:36:06,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 680 transitions. [2024-09-11 19:36:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:36:06,796 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:06,796 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:06,808 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-09-11 19:36:06,997 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:06,997 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:06,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:06,997 INFO L85 PathProgramCache]: Analyzing trace with hash -151888007, now seen corresponding path program 73 times [2024-09-11 19:36:06,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:06,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905823441] [2024-09-11 19:36:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:36:07,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:07,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905823441] [2024-09-11 19:36:07,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905823441] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:07,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995756297] [2024-09-11 19:36:07,280 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:36:07,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:07,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:07,281 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:07,281 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-11 19:36:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:07,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-11 19:36:07,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:36:07,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:36:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995756297] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:07,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:07,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 41 [2024-09-11 19:36:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974659775] [2024-09-11 19:36:07,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:07,814 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-11 19:36:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:07,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-11 19:36:07,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 19:36:07,815 INFO L87 Difference]: Start difference. First operand 601 states and 680 transitions. Second operand has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 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 19:36:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:08,404 INFO L93 Difference]: Finished difference Result 617 states and 695 transitions. [2024-09-11 19:36:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:36:08,404 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 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 19:36:08,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:08,406 INFO L225 Difference]: With dead ends: 617 [2024-09-11 19:36:08,406 INFO L226 Difference]: Without dead ends: 589 [2024-09-11 19:36:08,407 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=2482, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:36:08,407 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:08,407 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 666 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:36:08,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-09-11 19:36:08,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2024-09-11 19:36:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 1.1343537414965987) internal successors, (667), 588 states have internal predecessors, (667), 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 19:36:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 667 transitions. [2024-09-11 19:36:08,624 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 667 transitions. Word has length 39 [2024-09-11 19:36:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:08,624 INFO L474 AbstractCegarLoop]: Abstraction has 589 states and 667 transitions. [2024-09-11 19:36:08,624 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 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 19:36:08,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 667 transitions. [2024-09-11 19:36:08,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:36:08,626 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:08,626 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:08,638 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-09-11 19:36:08,826 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:08,826 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:08,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:08,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1350604866, now seen corresponding path program 74 times [2024-09-11 19:36:08,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:08,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339373958] [2024-09-11 19:36:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:08,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 19:36:09,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:09,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339373958] [2024-09-11 19:36:09,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339373958] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:09,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362180136] [2024-09-11 19:36:09,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:36:09,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:09,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:09,009 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:09,010 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-11 19:36:09,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:36:09,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:09,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:36:09,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-11 19:36:09,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-11 19:36:09,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362180136] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:09,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:09,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2024-09-11 19:36:09,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651378462] [2024-09-11 19:36:09,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:09,581 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-11 19:36:09,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:09,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-11 19:36:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 19:36:09,582 INFO L87 Difference]: Start difference. First operand 589 states and 667 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 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 19:36:10,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:10,220 INFO L93 Difference]: Finished difference Result 706 states and 804 transitions. [2024-09-11 19:36:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:36:10,220 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 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 39 [2024-09-11 19:36:10,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:10,223 INFO L225 Difference]: With dead ends: 706 [2024-09-11 19:36:10,223 INFO L226 Difference]: Without dead ends: 645 [2024-09-11 19:36:10,223 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=251, Invalid=1819, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:36:10,223 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:10,223 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 339 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:36:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-09-11 19:36:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2024-09-11 19:36:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.1211180124223603) internal successors, (722), 644 states have internal predecessors, (722), 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 19:36:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 722 transitions. [2024-09-11 19:36:10,456 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 722 transitions. Word has length 39 [2024-09-11 19:36:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:10,456 INFO L474 AbstractCegarLoop]: Abstraction has 645 states and 722 transitions. [2024-09-11 19:36:10,456 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 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 19:36:10,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 722 transitions. [2024-09-11 19:36:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:36:10,457 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:10,457 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:10,469 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-09-11 19:36:10,657 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2024-09-11 19:36:10,658 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:10,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:10,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1780758151, now seen corresponding path program 75 times [2024-09-11 19:36:10,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:10,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509654824] [2024-09-11 19:36:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:10,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:36:10,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:10,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509654824] [2024-09-11 19:36:10,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509654824] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:10,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119596823] [2024-09-11 19:36:10,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:36:10,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:10,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:10,927 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:10,928 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-11 19:36:11,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:36:11,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:11,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-11 19:36:11,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:36:11,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:36:11,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119596823] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:11,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:11,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 39 [2024-09-11 19:36:11,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879979762] [2024-09-11 19:36:11,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:11,468 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-11 19:36:11,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:11,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-11 19:36:11,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1373, Unknown=0, NotChecked=0, Total=1482 [2024-09-11 19:36:11,469 INFO L87 Difference]: Start difference. First operand 645 states and 722 transitions. Second operand has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 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 19:36:12,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:12,090 INFO L93 Difference]: Finished difference Result 681 states and 762 transitions. [2024-09-11 19:36:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:36:12,090 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 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 19:36:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:12,093 INFO L225 Difference]: With dead ends: 681 [2024-09-11 19:36:12,093 INFO L226 Difference]: Without dead ends: 652 [2024-09-11 19:36:12,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=2184, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 19:36:12,093 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:12,093 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 478 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:36:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2024-09-11 19:36:12,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 641. [2024-09-11 19:36:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.1234375) internal successors, (719), 640 states have internal predecessors, (719), 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 19:36:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 719 transitions. [2024-09-11 19:36:12,332 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 719 transitions. Word has length 39 [2024-09-11 19:36:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:12,332 INFO L474 AbstractCegarLoop]: Abstraction has 641 states and 719 transitions. [2024-09-11 19:36:12,332 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 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 19:36:12,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 719 transitions. [2024-09-11 19:36:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:36:12,334 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:12,334 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:12,345 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-09-11 19:36:12,534 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:12,534 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:12,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:12,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2037478882, now seen corresponding path program 76 times [2024-09-11 19:36:12,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:12,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641913160] [2024-09-11 19:36:12,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:12,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-11 19:36:12,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:12,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641913160] [2024-09-11 19:36:12,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641913160] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:12,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716769628] [2024-09-11 19:36:12,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:36:12,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:12,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:12,681 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:12,682 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-11 19:36:12,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:36:12,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:12,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:36:12,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-11 19:36:12,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-11 19:36:13,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716769628] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:13,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:13,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-09-11 19:36:13,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105109744] [2024-09-11 19:36:13,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:13,222 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-11 19:36:13,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:13,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-11 19:36:13,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:36:13,223 INFO L87 Difference]: Start difference. First operand 641 states and 719 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 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 19:36:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:13,836 INFO L93 Difference]: Finished difference Result 674 states and 752 transitions. [2024-09-11 19:36:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:36:13,836 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 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 19:36:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:13,839 INFO L225 Difference]: With dead ends: 674 [2024-09-11 19:36:13,839 INFO L226 Difference]: Without dead ends: 641 [2024-09-11 19:36:13,839 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:36:13,839 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:13,840 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:36:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2024-09-11 19:36:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2024-09-11 19:36:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.1078125) internal successors, (709), 640 states have internal predecessors, (709), 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 19:36:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 709 transitions. [2024-09-11 19:36:14,080 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 709 transitions. Word has length 39 [2024-09-11 19:36:14,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:14,080 INFO L474 AbstractCegarLoop]: Abstraction has 641 states and 709 transitions. [2024-09-11 19:36:14,080 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 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 19:36:14,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 709 transitions. [2024-09-11 19:36:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:36:14,081 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:14,081 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:14,096 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-09-11 19:36:14,281 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:14,282 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:14,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1753144915, now seen corresponding path program 77 times [2024-09-11 19:36:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:14,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819996570] [2024-09-11 19:36:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:14,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:14,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:14,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819996570] [2024-09-11 19:36:14,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819996570] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:14,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194362225] [2024-09-11 19:36:14,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:36:14,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:14,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:14,698 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:14,699 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-11 19:36:14,775 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-11 19:36:14,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:14,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 19:36:14,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:15,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:16,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194362225] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:16,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:16,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 59 [2024-09-11 19:36:16,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712850379] [2024-09-11 19:36:16,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:16,026 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-11 19:36:16,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:16,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-11 19:36:16,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3250, Unknown=0, NotChecked=0, Total=3422 [2024-09-11 19:36:16,027 INFO L87 Difference]: Start difference. First operand 641 states and 709 transitions. Second operand has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 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 19:36:17,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:17,323 INFO L93 Difference]: Finished difference Result 931 states and 1017 transitions. [2024-09-11 19:36:17,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:36:17,324 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 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 40 [2024-09-11 19:36:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:17,326 INFO L225 Difference]: With dead ends: 931 [2024-09-11 19:36:17,326 INFO L226 Difference]: Without dead ends: 885 [2024-09-11 19:36:17,327 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 36 SyntacticMatches, 10 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=627, Invalid=5535, Unknown=0, NotChecked=0, Total=6162 [2024-09-11 19:36:17,327 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 38 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:17,327 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 419 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:36:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-09-11 19:36:17,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 703. [2024-09-11 19:36:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 1.106837606837607) internal successors, (777), 702 states have internal predecessors, (777), 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 19:36:17,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 777 transitions. [2024-09-11 19:36:17,604 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 777 transitions. Word has length 40 [2024-09-11 19:36:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:17,604 INFO L474 AbstractCegarLoop]: Abstraction has 703 states and 777 transitions. [2024-09-11 19:36:17,604 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 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 19:36:17,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 777 transitions. [2024-09-11 19:36:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:36:17,605 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:17,605 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:17,622 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:17,809 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:17,809 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:17,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:17,810 INFO L85 PathProgramCache]: Analyzing trace with hash -452301350, now seen corresponding path program 78 times [2024-09-11 19:36:17,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:17,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932697589] [2024-09-11 19:36:17,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:17,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932697589] [2024-09-11 19:36:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932697589] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146373036] [2024-09-11 19:36:18,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:36:18,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:18,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:18,192 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:18,192 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-11 19:36:18,269 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-11 19:36:18,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:18,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 19:36:18,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:19,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:19,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146373036] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:19,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:19,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 60 [2024-09-11 19:36:19,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585189] [2024-09-11 19:36:19,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:19,701 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-11 19:36:19,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-11 19:36:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3363, Unknown=0, NotChecked=0, Total=3540 [2024-09-11 19:36:19,702 INFO L87 Difference]: Start difference. First operand 703 states and 777 transitions. Second operand has 60 states, 60 states have (on average 1.45) internal successors, (87), 60 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 19:36:21,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:21,376 INFO L93 Difference]: Finished difference Result 732 states and 812 transitions. [2024-09-11 19:36:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-11 19:36:21,376 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.45) internal successors, (87), 60 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 40 [2024-09-11 19:36:21,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:21,378 INFO L225 Difference]: With dead ends: 732 [2024-09-11 19:36:21,378 INFO L226 Difference]: Without dead ends: 709 [2024-09-11 19:36:21,379 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 35 SyntacticMatches, 11 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=372, Invalid=5790, Unknown=0, NotChecked=0, Total=6162 [2024-09-11 19:36:21,379 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:21,379 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 652 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:36:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-09-11 19:36:21,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2024-09-11 19:36:21,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 1.1059322033898304) internal successors, (783), 708 states have internal predecessors, (783), 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 19:36:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 783 transitions. [2024-09-11 19:36:21,660 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 783 transitions. Word has length 40 [2024-09-11 19:36:21,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:21,660 INFO L474 AbstractCegarLoop]: Abstraction has 709 states and 783 transitions. [2024-09-11 19:36:21,660 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.45) internal successors, (87), 60 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 19:36:21,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 783 transitions. [2024-09-11 19:36:21,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:36:21,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:21,661 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:21,673 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:21,862 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:21,862 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:21,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1805018702, now seen corresponding path program 79 times [2024-09-11 19:36:21,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:21,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015374434] [2024-09-11 19:36:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:21,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:21,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015374434] [2024-09-11 19:36:21,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015374434] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:21,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441348276] [2024-09-11 19:36:21,968 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:36:21,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:21,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:21,969 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:21,970 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-11 19:36:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:22,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:36:22,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:22,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:22,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441348276] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:22,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:22,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-09-11 19:36:22,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379132004] [2024-09-11 19:36:22,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:22,216 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 19:36:22,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 19:36:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=329, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:36:22,216 INFO L87 Difference]: Start difference. First operand 709 states and 783 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 19:36:22,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:22,677 INFO L93 Difference]: Finished difference Result 825 states and 918 transitions. [2024-09-11 19:36:22,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-11 19:36:22,678 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 40 [2024-09-11 19:36:22,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:22,680 INFO L225 Difference]: With dead ends: 825 [2024-09-11 19:36:22,680 INFO L226 Difference]: Without dead ends: 697 [2024-09-11 19:36:22,680 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 60 SyntacticMatches, 12 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=487, Invalid=919, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:36:22,681 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:22,681 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 162 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:36:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-09-11 19:36:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2024-09-11 19:36:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.1020114942528736) internal successors, (767), 696 states have internal predecessors, (767), 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 19:36:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 767 transitions. [2024-09-11 19:36:22,975 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 767 transitions. Word has length 40 [2024-09-11 19:36:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:22,975 INFO L474 AbstractCegarLoop]: Abstraction has 697 states and 767 transitions. [2024-09-11 19:36:22,975 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 19:36:22,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 767 transitions. [2024-09-11 19:36:22,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:36:22,976 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:22,976 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:22,988 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2024-09-11 19:36:23,177 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-09-11 19:36:23,177 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:23,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash -79321705, now seen corresponding path program 80 times [2024-09-11 19:36:23,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:23,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518808799] [2024-09-11 19:36:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:23,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518808799] [2024-09-11 19:36:23,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518808799] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215430054] [2024-09-11 19:36:23,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:36:23,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:23,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:23,285 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:23,286 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-11 19:36:23,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:36:23,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:23,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:36:23,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:23,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:23,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215430054] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:23,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:23,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-09-11 19:36:23,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779503886] [2024-09-11 19:36:23,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:23,532 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 19:36:23,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 19:36:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=329, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:36:23,533 INFO L87 Difference]: Start difference. First operand 697 states and 767 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 19:36:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:24,011 INFO L93 Difference]: Finished difference Result 717 states and 787 transitions. [2024-09-11 19:36:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-11 19:36:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 40 [2024-09-11 19:36:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:24,014 INFO L225 Difference]: With dead ends: 717 [2024-09-11 19:36:24,014 INFO L226 Difference]: Without dead ends: 712 [2024-09-11 19:36:24,014 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 60 SyntacticMatches, 12 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=487, Invalid=919, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:36:24,015 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:24,015 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 181 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:36:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-09-11 19:36:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 698. [2024-09-11 19:36:24,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.1018651362984218) internal successors, (768), 697 states have internal predecessors, (768), 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 19:36:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 768 transitions. [2024-09-11 19:36:24,306 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 768 transitions. Word has length 40 [2024-09-11 19:36:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:24,306 INFO L474 AbstractCegarLoop]: Abstraction has 698 states and 768 transitions. [2024-09-11 19:36:24,306 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 19:36:24,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 768 transitions. [2024-09-11 19:36:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-11 19:36:24,307 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:24,307 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:24,319 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-09-11 19:36:24,508 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2024-09-11 19:36:24,508 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:24,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:24,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1691715220, now seen corresponding path program 81 times [2024-09-11 19:36:24,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:24,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828138239] [2024-09-11 19:36:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:24,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:36:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828138239] [2024-09-11 19:36:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828138239] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045143139] [2024-09-11 19:36:25,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:36:25,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:25,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:25,007 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:25,008 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-11 19:36:25,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-11 19:36:25,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:25,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-11 19:36:25,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:36:25,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:36:25,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045143139] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:25,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:25,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 50 [2024-09-11 19:36:25,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097330880] [2024-09-11 19:36:25,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:25,643 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-11 19:36:25,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:25,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-11 19:36:25,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2330, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 19:36:25,643 INFO L87 Difference]: Start difference. First operand 698 states and 768 transitions. Second operand has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 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 19:36:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:26,746 INFO L93 Difference]: Finished difference Result 765 states and 842 transitions. [2024-09-11 19:36:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 19:36:26,747 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 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 41 [2024-09-11 19:36:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:26,749 INFO L225 Difference]: With dead ends: 765 [2024-09-11 19:36:26,749 INFO L226 Difference]: Without dead ends: 757 [2024-09-11 19:36:26,749 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=3973, Unknown=0, NotChecked=0, Total=4160 [2024-09-11 19:36:26,750 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 106 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:26,750 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1610 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:36:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2024-09-11 19:36:27,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 706. [2024-09-11 19:36:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 1.102127659574468) internal successors, (777), 705 states have internal predecessors, (777), 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 19:36:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 777 transitions. [2024-09-11 19:36:27,034 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 777 transitions. Word has length 41 [2024-09-11 19:36:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:27,034 INFO L474 AbstractCegarLoop]: Abstraction has 706 states and 777 transitions. [2024-09-11 19:36:27,034 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 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 19:36:27,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 777 transitions. [2024-09-11 19:36:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-11 19:36:27,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:27,035 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:27,047 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-09-11 19:36:27,235 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:27,236 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:27,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 484799952, now seen corresponding path program 82 times [2024-09-11 19:36:27,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:27,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327069694] [2024-09-11 19:36:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:27,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:36:27,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:27,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327069694] [2024-09-11 19:36:27,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327069694] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:27,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366148575] [2024-09-11 19:36:27,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:36:27,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:27,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:27,649 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:27,650 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-11 19:36:27,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:36:27,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:27,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-09-11 19:36:27,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:36:28,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:36:28,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366148575] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:28,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:28,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 48 [2024-09-11 19:36:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844065593] [2024-09-11 19:36:28,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:28,305 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-11 19:36:28,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:28,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-11 19:36:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=2137, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:36:28,306 INFO L87 Difference]: Start difference. First operand 706 states and 777 transitions. Second operand has 48 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 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 19:36:29,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:29,375 INFO L93 Difference]: Finished difference Result 725 states and 795 transitions. [2024-09-11 19:36:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 19:36:29,376 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 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 41 [2024-09-11 19:36:29,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:29,378 INFO L225 Difference]: With dead ends: 725 [2024-09-11 19:36:29,378 INFO L226 Difference]: Without dead ends: 698 [2024-09-11 19:36:29,379 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=185, Invalid=3597, Unknown=0, NotChecked=0, Total=3782 [2024-09-11 19:36:29,379 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 86 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:29,379 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1374 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:36:29,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-09-11 19:36:29,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2024-09-11 19:36:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.1018651362984218) internal successors, (768), 697 states have internal predecessors, (768), 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 19:36:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 768 transitions. [2024-09-11 19:36:29,675 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 768 transitions. Word has length 41 [2024-09-11 19:36:29,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:29,676 INFO L474 AbstractCegarLoop]: Abstraction has 698 states and 768 transitions. [2024-09-11 19:36:29,676 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 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 19:36:29,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:29,676 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 768 transitions. [2024-09-11 19:36:29,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-11 19:36:29,677 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:29,677 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:29,688 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:29,877 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:29,877 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:29,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:29,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1144646292, now seen corresponding path program 83 times [2024-09-11 19:36:29,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:29,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323279538] [2024-09-11 19:36:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:29,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:36:30,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:30,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323279538] [2024-09-11 19:36:30,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323279538] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:30,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444945608] [2024-09-11 19:36:30,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:36:30,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:30,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:30,249 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:30,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-11 19:36:30,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-11 19:36:30,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:30,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-11 19:36:30,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:36:30,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:36:30,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444945608] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:30,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:30,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 46 [2024-09-11 19:36:30,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199210086] [2024-09-11 19:36:30,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:30,851 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-11 19:36:30,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:30,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-11 19:36:30,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1952, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:36:30,852 INFO L87 Difference]: Start difference. First operand 698 states and 768 transitions. Second operand has 46 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 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 19:36:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:31,731 INFO L93 Difference]: Finished difference Result 716 states and 785 transitions. [2024-09-11 19:36:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 19:36:31,732 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 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 41 [2024-09-11 19:36:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:31,734 INFO L225 Difference]: With dead ends: 716 [2024-09-11 19:36:31,734 INFO L226 Difference]: Without dead ends: 688 [2024-09-11 19:36:31,734 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=3239, Unknown=0, NotChecked=0, Total=3422 [2024-09-11 19:36:31,735 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 69 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:31,735 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1199 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:36:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-09-11 19:36:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2024-09-11 19:36:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 1.1018922852983988) internal successors, (757), 687 states have internal predecessors, (757), 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 19:36:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 757 transitions. [2024-09-11 19:36:32,063 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 757 transitions. Word has length 41 [2024-09-11 19:36:32,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:32,063 INFO L474 AbstractCegarLoop]: Abstraction has 688 states and 757 transitions. [2024-09-11 19:36:32,063 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 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 19:36:32,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:32,064 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 757 transitions. [2024-09-11 19:36:32,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-11 19:36:32,065 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:32,065 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:32,081 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:32,265 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:32,266 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:32,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:32,266 INFO L85 PathProgramCache]: Analyzing trace with hash -130192944, now seen corresponding path program 84 times [2024-09-11 19:36:32,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:32,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489917097] [2024-09-11 19:36:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:32,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:36:32,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:32,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489917097] [2024-09-11 19:36:32,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489917097] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:32,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337996577] [2024-09-11 19:36:32,692 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:36:32,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:32,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:32,694 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:32,695 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-11 19:36:32,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:36:32,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:32,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:36:32,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:36:33,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:36:33,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337996577] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:33,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:33,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 44 [2024-09-11 19:36:33,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634655788] [2024-09-11 19:36:33,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:33,327 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-11 19:36:33,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:33,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-11 19:36:33,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1775, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:36:33,328 INFO L87 Difference]: Start difference. First operand 688 states and 757 transitions. Second operand has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 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 19:36:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:34,101 INFO L93 Difference]: Finished difference Result 705 states and 773 transitions. [2024-09-11 19:36:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 19:36:34,102 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 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) Word has length 41 [2024-09-11 19:36:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:34,104 INFO L225 Difference]: With dead ends: 705 [2024-09-11 19:36:34,104 INFO L226 Difference]: Without dead ends: 676 [2024-09-11 19:36:34,105 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=181, Invalid=2899, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 19:36:34,105 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:34,105 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 935 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:36:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2024-09-11 19:36:34,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2024-09-11 19:36:34,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.1022222222222222) internal successors, (744), 675 states have internal predecessors, (744), 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 19:36:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 744 transitions. [2024-09-11 19:36:34,382 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 744 transitions. Word has length 41 [2024-09-11 19:36:34,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:34,382 INFO L474 AbstractCegarLoop]: Abstraction has 676 states and 744 transitions. [2024-09-11 19:36:34,382 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 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 19:36:34,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 744 transitions. [2024-09-11 19:36:34,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-11 19:36:34,383 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:34,383 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:34,396 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:34,583 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2024-09-11 19:36:34,584 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:34,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:34,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1252692332, now seen corresponding path program 85 times [2024-09-11 19:36:34,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:34,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628725026] [2024-09-11 19:36:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:34,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:36:34,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:34,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628725026] [2024-09-11 19:36:34,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628725026] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:34,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410091507] [2024-09-11 19:36:34,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:36:34,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:34,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:34,864 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:34,864 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-11 19:36:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:34,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-11 19:36:34,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:36:35,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:36:35,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410091507] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:35,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:35,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 42 [2024-09-11 19:36:35,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13737047] [2024-09-11 19:36:35,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:35,442 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 19:36:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:35,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 19:36:35,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1606, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:36:35,443 INFO L87 Difference]: Start difference. First operand 676 states and 744 transitions. Second operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 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 19:36:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:36,135 INFO L93 Difference]: Finished difference Result 692 states and 759 transitions. [2024-09-11 19:36:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:36:36,135 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 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 41 [2024-09-11 19:36:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:36,138 INFO L225 Difference]: With dead ends: 692 [2024-09-11 19:36:36,138 INFO L226 Difference]: Without dead ends: 662 [2024-09-11 19:36:36,139 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=2577, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 19:36:36,139 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 37 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:36,139 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 695 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:36:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-09-11 19:36:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-09-11 19:36:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.1028744326777609) internal successors, (729), 661 states have internal predecessors, (729), 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 19:36:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 729 transitions. [2024-09-11 19:36:36,411 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 729 transitions. Word has length 41 [2024-09-11 19:36:36,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:36,411 INFO L474 AbstractCegarLoop]: Abstraction has 662 states and 729 transitions. [2024-09-11 19:36:36,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 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 19:36:36,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 729 transitions. [2024-09-11 19:36:36,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-11 19:36:36,412 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:36,412 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:36,430 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:36,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:36,613 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:36,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1865186768, now seen corresponding path program 86 times [2024-09-11 19:36:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:36,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430474482] [2024-09-11 19:36:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:36,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:36:36,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:36,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430474482] [2024-09-11 19:36:36,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430474482] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:36,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162868199] [2024-09-11 19:36:36,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:36:36,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:36,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:36,866 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:36,867 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-11 19:36:36,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:36:36,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:36,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-11 19:36:36,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:36:37,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:36:37,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162868199] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:37,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:37,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 40 [2024-09-11 19:36:37,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212242587] [2024-09-11 19:36:37,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:37,411 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-11 19:36:37,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:37,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-11 19:36:37,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:36:37,412 INFO L87 Difference]: Start difference. First operand 662 states and 729 transitions. Second operand has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 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 19:36:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:38,010 INFO L93 Difference]: Finished difference Result 688 states and 758 transitions. [2024-09-11 19:36:38,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:36:38,010 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 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 41 [2024-09-11 19:36:38,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:38,013 INFO L225 Difference]: With dead ends: 688 [2024-09-11 19:36:38,013 INFO L226 Difference]: Without dead ends: 683 [2024-09-11 19:36:38,013 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=2273, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 19:36:38,014 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:38,014 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 424 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:36:38,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-09-11 19:36:38,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 675. [2024-09-11 19:36:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.1038575667655786) internal successors, (744), 674 states have internal predecessors, (744), 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 19:36:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 744 transitions. [2024-09-11 19:36:38,293 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 744 transitions. Word has length 41 [2024-09-11 19:36:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:38,293 INFO L474 AbstractCegarLoop]: Abstraction has 675 states and 744 transitions. [2024-09-11 19:36:38,293 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 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 19:36:38,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 744 transitions. [2024-09-11 19:36:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-11 19:36:38,294 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:38,294 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:38,306 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-09-11 19:36:38,494 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:38,494 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:38,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:38,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1458839526, now seen corresponding path program 87 times [2024-09-11 19:36:38,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:38,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313130312] [2024-09-11 19:36:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:38,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:38,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:38,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313130312] [2024-09-11 19:36:38,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313130312] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:38,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238334568] [2024-09-11 19:36:38,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:36:38,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:38,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:38,918 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:38,919 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-11 19:36:39,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-11 19:36:39,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:39,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-11 19:36:39,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:39,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:40,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238334568] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:40,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:40,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 64 [2024-09-11 19:36:40,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468686903] [2024-09-11 19:36:40,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:40,483 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-11 19:36:40,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:40,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-11 19:36:40,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3845, Unknown=0, NotChecked=0, Total=4032 [2024-09-11 19:36:40,484 INFO L87 Difference]: Start difference. First operand 675 states and 744 transitions. Second operand has 64 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 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 19:36:42,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:42,056 INFO L93 Difference]: Finished difference Result 993 states and 1080 transitions. [2024-09-11 19:36:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 19:36:42,056 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 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 42 [2024-09-11 19:36:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:42,058 INFO L225 Difference]: With dead ends: 993 [2024-09-11 19:36:42,058 INFO L226 Difference]: Without dead ends: 945 [2024-09-11 19:36:42,059 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=726, Invalid=6584, Unknown=0, NotChecked=0, Total=7310 [2024-09-11 19:36:42,059 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:42,059 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 443 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:36:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-09-11 19:36:42,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 738. [2024-09-11 19:36:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 1.1031207598371777) internal successors, (813), 737 states have internal predecessors, (813), 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 19:36:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 813 transitions. [2024-09-11 19:36:42,374 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 813 transitions. Word has length 42 [2024-09-11 19:36:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:42,374 INFO L474 AbstractCegarLoop]: Abstraction has 738 states and 813 transitions. [2024-09-11 19:36:42,374 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 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 19:36:42,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 813 transitions. [2024-09-11 19:36:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-11 19:36:42,375 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:42,375 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:42,388 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:42,575 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:42,576 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:42,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:42,576 INFO L85 PathProgramCache]: Analyzing trace with hash 212605325, now seen corresponding path program 88 times [2024-09-11 19:36:42,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:42,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114187045] [2024-09-11 19:36:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:42,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:43,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:43,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114187045] [2024-09-11 19:36:43,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114187045] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:43,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049485127] [2024-09-11 19:36:43,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:36:43,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:43,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:43,048 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:43,048 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-11 19:36:43,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:36:43,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:43,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-11 19:36:43,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:44,023 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:44,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:36:44,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049485127] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:44,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:44,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 65 [2024-09-11 19:36:44,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323743534] [2024-09-11 19:36:44,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:44,754 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-11 19:36:44,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:44,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-11 19:36:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3958, Unknown=0, NotChecked=0, Total=4160 [2024-09-11 19:36:44,756 INFO L87 Difference]: Start difference. First operand 738 states and 813 transitions. Second operand has 65 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 65 states have internal predecessors, (92), 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 19:36:46,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:46,683 INFO L93 Difference]: Finished difference Result 768 states and 849 transitions. [2024-09-11 19:36:46,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-11 19:36:46,683 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 65 states have internal predecessors, (92), 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 42 [2024-09-11 19:36:46,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:46,685 INFO L225 Difference]: With dead ends: 768 [2024-09-11 19:36:46,685 INFO L226 Difference]: Without dead ends: 744 [2024-09-11 19:36:46,685 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 35 SyntacticMatches, 12 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=428, Invalid=6882, Unknown=0, NotChecked=0, Total=7310 [2024-09-11 19:36:46,686 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:46,686 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 675 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:36:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2024-09-11 19:36:47,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2024-09-11 19:36:47,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 1.1022880215343203) internal successors, (819), 743 states have internal predecessors, (819), 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 19:36:47,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 819 transitions. [2024-09-11 19:36:47,013 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 819 transitions. Word has length 42 [2024-09-11 19:36:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:47,013 INFO L474 AbstractCegarLoop]: Abstraction has 744 states and 819 transitions. [2024-09-11 19:36:47,013 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 65 states have internal predecessors, (92), 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 19:36:47,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 819 transitions. [2024-09-11 19:36:47,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-11 19:36:47,015 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:47,015 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:47,033 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:47,215 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:47,216 INFO L399 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:47,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2015407287, now seen corresponding path program 89 times [2024-09-11 19:36:47,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:47,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349863929] [2024-09-11 19:36:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:47,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:47,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:47,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349863929] [2024-09-11 19:36:47,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349863929] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:47,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169625125] [2024-09-11 19:36:47,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:36:47,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:47,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:47,365 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:47,367 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-11 19:36:47,459 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-11 19:36:47,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:47,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-11 19:36:47,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:47,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:47,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169625125] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:47,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:47,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 25 [2024-09-11 19:36:47,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170587928] [2024-09-11 19:36:47,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:47,688 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-11 19:36:47,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:47,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-11 19:36:47,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:36:47,688 INFO L87 Difference]: Start difference. First operand 744 states and 819 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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 19:36:48,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:48,380 INFO L93 Difference]: Finished difference Result 820 states and 910 transitions. [2024-09-11 19:36:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-11 19:36:48,380 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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 42 [2024-09-11 19:36:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:48,382 INFO L225 Difference]: With dead ends: 820 [2024-09-11 19:36:48,382 INFO L226 Difference]: Without dead ends: 804 [2024-09-11 19:36:48,383 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=495, Invalid=1485, Unknown=0, NotChecked=0, Total=1980 [2024-09-11 19:36:48,383 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:48,383 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 252 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:36:48,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-09-11 19:36:48,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 784. [2024-09-11 19:36:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.1136653895274584) internal successors, (872), 783 states have internal predecessors, (872), 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 19:36:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 872 transitions. [2024-09-11 19:36:48,731 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 872 transitions. Word has length 42 [2024-09-11 19:36:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:48,731 INFO L474 AbstractCegarLoop]: Abstraction has 784 states and 872 transitions. [2024-09-11 19:36:48,731 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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 19:36:48,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:48,732 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 872 transitions. [2024-09-11 19:36:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-11 19:36:48,732 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:48,732 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:48,745 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:48,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2024-09-11 19:36:48,933 INFO L399 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:48,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:48,933 INFO L85 PathProgramCache]: Analyzing trace with hash -564570482, now seen corresponding path program 90 times [2024-09-11 19:36:48,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:48,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978846988] [2024-09-11 19:36:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:48,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:49,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978846988] [2024-09-11 19:36:49,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978846988] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991261066] [2024-09-11 19:36:49,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:36:49,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:49,050 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:49,051 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-11 19:36:49,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-11 19:36:49,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:49,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-11 19:36:49,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:49,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-11 19:36:49,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991261066] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:49,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:49,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 25 [2024-09-11 19:36:49,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680227877] [2024-09-11 19:36:49,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:49,307 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-11 19:36:49,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:49,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-11 19:36:49,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:36:49,308 INFO L87 Difference]: Start difference. First operand 784 states and 872 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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 19:36:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:49,941 INFO L93 Difference]: Finished difference Result 1085 states and 1236 transitions. [2024-09-11 19:36:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-11 19:36:49,941 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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 42 [2024-09-11 19:36:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:49,943 INFO L225 Difference]: With dead ends: 1085 [2024-09-11 19:36:49,943 INFO L226 Difference]: Without dead ends: 894 [2024-09-11 19:36:49,944 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=495, Invalid=1485, Unknown=0, NotChecked=0, Total=1980 [2024-09-11 19:36:49,944 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:49,944 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 189 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:36:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2024-09-11 19:36:50,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 894. [2024-09-11 19:36:50,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.1142217245240762) internal successors, (995), 893 states have internal predecessors, (995), 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 19:36:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 995 transitions. [2024-09-11 19:36:50,333 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 995 transitions. Word has length 42 [2024-09-11 19:36:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:50,333 INFO L474 AbstractCegarLoop]: Abstraction has 894 states and 995 transitions. [2024-09-11 19:36:50,333 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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 19:36:50,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 995 transitions. [2024-09-11 19:36:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:36:50,334 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:50,334 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:50,346 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2024-09-11 19:36:50,535 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2024-09-11 19:36:50,535 INFO L399 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:50,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:50,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1740522521, now seen corresponding path program 91 times [2024-09-11 19:36:50,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:50,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766067092] [2024-09-11 19:36:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:50,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:36:51,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:51,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766067092] [2024-09-11 19:36:51,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766067092] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:51,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228876351] [2024-09-11 19:36:51,037 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:36:51,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:51,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:51,038 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:51,039 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-11 19:36:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:51,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-11 19:36:51,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:36:51,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:36:51,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228876351] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:51,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:51,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 53 [2024-09-11 19:36:51,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365652805] [2024-09-11 19:36:51,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:51,750 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-11 19:36:51,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:51,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-11 19:36:51,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2629, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 19:36:51,751 INFO L87 Difference]: Start difference. First operand 894 states and 995 transitions. Second operand has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 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 19:36:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:53,053 INFO L93 Difference]: Finished difference Result 971 states and 1080 transitions. [2024-09-11 19:36:53,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-11 19:36:53,053 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 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 19:36:53,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:53,056 INFO L225 Difference]: With dead ends: 971 [2024-09-11 19:36:53,056 INFO L226 Difference]: Without dead ends: 963 [2024-09-11 19:36:53,056 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=198, Invalid=4494, Unknown=0, NotChecked=0, Total=4692 [2024-09-11 19:36:53,056 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 117 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 2109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:53,056 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1793 Invalid, 2109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:36:53,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2024-09-11 19:36:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 902. [2024-09-11 19:36:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 1.1143174250832408) internal successors, (1004), 901 states have internal predecessors, (1004), 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 19:36:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1004 transitions. [2024-09-11 19:36:53,457 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1004 transitions. Word has length 43 [2024-09-11 19:36:53,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:53,457 INFO L474 AbstractCegarLoop]: Abstraction has 902 states and 1004 transitions. [2024-09-11 19:36:53,457 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 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 19:36:53,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:53,457 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1004 transitions. [2024-09-11 19:36:53,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:36:53,458 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:53,458 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:53,470 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-09-11 19:36:53,659 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-09-11 19:36:53,659 INFO L399 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:53,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash -525982183, now seen corresponding path program 92 times [2024-09-11 19:36:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:53,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714190933] [2024-09-11 19:36:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:53,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:36:54,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:54,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714190933] [2024-09-11 19:36:54,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714190933] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:54,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041609435] [2024-09-11 19:36:54,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:36:54,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:54,115 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:54,115 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-11 19:36:54,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:36:54,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:54,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-11 19:36:54,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:36:54,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:36:54,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041609435] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:54,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:54,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 51 [2024-09-11 19:36:54,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909362292] [2024-09-11 19:36:54,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:54,801 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-11 19:36:54,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:54,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-11 19:36:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2424, Unknown=0, NotChecked=0, Total=2550 [2024-09-11 19:36:54,802 INFO L87 Difference]: Start difference. First operand 902 states and 1004 transitions. Second operand has 51 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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 19:36:55,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:55,941 INFO L93 Difference]: Finished difference Result 922 states and 1023 transitions. [2024-09-11 19:36:55,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 19:36:55,941 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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 19:36:55,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:55,943 INFO L225 Difference]: With dead ends: 922 [2024-09-11 19:36:55,943 INFO L226 Difference]: Without dead ends: 894 [2024-09-11 19:36:55,944 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=196, Invalid=4094, Unknown=0, NotChecked=0, Total=4290 [2024-09-11 19:36:55,944 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 95 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:55,944 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1544 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:36:55,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2024-09-11 19:36:56,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 894. [2024-09-11 19:36:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.1142217245240762) internal successors, (995), 893 states have internal predecessors, (995), 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 19:36:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 995 transitions. [2024-09-11 19:36:56,340 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 995 transitions. Word has length 43 [2024-09-11 19:36:56,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:56,341 INFO L474 AbstractCegarLoop]: Abstraction has 894 states and 995 transitions. [2024-09-11 19:36:56,341 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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 19:36:56,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:56,341 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 995 transitions. [2024-09-11 19:36:56,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:36:56,342 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:56,342 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:56,359 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2024-09-11 19:36:56,543 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:56,543 INFO L399 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:56,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1831148569, now seen corresponding path program 93 times [2024-09-11 19:36:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:56,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154631397] [2024-09-11 19:36:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:56,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:36:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:56,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154631397] [2024-09-11 19:36:56,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154631397] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:56,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112832595] [2024-09-11 19:36:56,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:36:56,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:56,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:56,991 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:56,991 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-09-11 19:36:57,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-11 19:36:57,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:57,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-09-11 19:36:57,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:36:57,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:36:57,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112832595] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:57,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:36:57,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 49 [2024-09-11 19:36:57,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092434733] [2024-09-11 19:36:57,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:57,661 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-11 19:36:57,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:57,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-11 19:36:57,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2227, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 19:36:57,662 INFO L87 Difference]: Start difference. First operand 894 states and 995 transitions. Second operand has 49 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 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 19:36:58,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:58,786 INFO L93 Difference]: Finished difference Result 913 states and 1013 transitions. [2024-09-11 19:36:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 19:36:58,786 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 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 19:36:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:58,788 INFO L225 Difference]: With dead ends: 913 [2024-09-11 19:36:58,788 INFO L226 Difference]: Without dead ends: 884 [2024-09-11 19:36:58,789 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=194, Invalid=3712, Unknown=0, NotChecked=0, Total=3906 [2024-09-11 19:36:58,789 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 78 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:58,789 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1256 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:36:58,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-09-11 19:36:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 884. [2024-09-11 19:36:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 1.1143827859569648) internal successors, (984), 883 states have internal predecessors, (984), 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 19:36:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 984 transitions. [2024-09-11 19:36:59,178 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 984 transitions. Word has length 43 [2024-09-11 19:36:59,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:59,178 INFO L474 AbstractCegarLoop]: Abstraction has 884 states and 984 transitions. [2024-09-11 19:36:59,178 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 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 19:36:59,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 984 transitions. [2024-09-11 19:36:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:36:59,179 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:59,179 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:59,191 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2024-09-11 19:36:59,380 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-09-11 19:36:59,380 INFO L399 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:59,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:59,380 INFO L85 PathProgramCache]: Analyzing trace with hash 73879065, now seen corresponding path program 94 times [2024-09-11 19:36:59,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:59,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399695133] [2024-09-11 19:36:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:59,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:36:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:36:59,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399695133] [2024-09-11 19:36:59,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399695133] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:36:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498245165] [2024-09-11 19:36:59,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:36:59,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:59,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:59,749 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:36:59,750 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-09-11 19:36:59,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:36:59,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:59,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-11 19:36:59,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:37:00,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:37:00,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498245165] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:00,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:00,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 47 [2024-09-11 19:37:00,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941522572] [2024-09-11 19:37:00,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:00,395 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-11 19:37:00,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-11 19:37:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2038, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 19:37:00,396 INFO L87 Difference]: Start difference. First operand 884 states and 984 transitions. Second operand has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 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 19:37:01,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:01,392 INFO L93 Difference]: Finished difference Result 902 states and 1001 transitions. [2024-09-11 19:37:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 19:37:01,392 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 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 19:37:01,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:01,394 INFO L225 Difference]: With dead ends: 902 [2024-09-11 19:37:01,394 INFO L226 Difference]: Without dead ends: 872 [2024-09-11 19:37:01,395 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=192, Invalid=3348, Unknown=0, NotChecked=0, Total=3540 [2024-09-11 19:37:01,395 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 62 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:01,395 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1024 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:37:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-09-11 19:37:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2024-09-11 19:37:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.1148105625717566) internal successors, (971), 871 states have internal predecessors, (971), 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 19:37:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 971 transitions. [2024-09-11 19:37:01,783 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 971 transitions. Word has length 43 [2024-09-11 19:37:01,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:01,784 INFO L474 AbstractCegarLoop]: Abstraction has 872 states and 971 transitions. [2024-09-11 19:37:01,784 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 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 19:37:01,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 971 transitions. [2024-09-11 19:37:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:37:01,785 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:01,785 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:01,796 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2024-09-11 19:37:01,985 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-09-11 19:37:01,985 INFO L399 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:01,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash 127661081, now seen corresponding path program 95 times [2024-09-11 19:37:01,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:01,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547524895] [2024-09-11 19:37:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:01,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:37:02,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547524895] [2024-09-11 19:37:02,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547524895] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104819893] [2024-09-11 19:37:02,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:37:02,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:02,318 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:02,319 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-09-11 19:37:02,403 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:37:02,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:02,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:37:02,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:37:02,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:37:02,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104819893] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:02,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:02,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 45 [2024-09-11 19:37:02,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864395543] [2024-09-11 19:37:02,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:02,950 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-11 19:37:02,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:02,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-11 19:37:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1857, Unknown=0, NotChecked=0, Total=1980 [2024-09-11 19:37:02,951 INFO L87 Difference]: Start difference. First operand 872 states and 971 transitions. Second operand has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 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 19:37:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:03,779 INFO L93 Difference]: Finished difference Result 889 states and 987 transitions. [2024-09-11 19:37:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 19:37:03,780 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 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 19:37:03,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:03,782 INFO L225 Difference]: With dead ends: 889 [2024-09-11 19:37:03,782 INFO L226 Difference]: Without dead ends: 858 [2024-09-11 19:37:03,782 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=3002, Unknown=0, NotChecked=0, Total=3192 [2024-09-11 19:37:03,783 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:03,783 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 692 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:37:03,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2024-09-11 19:37:04,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2024-09-11 19:37:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 1.1155192532088682) internal successors, (956), 857 states have internal predecessors, (956), 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 19:37:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 956 transitions. [2024-09-11 19:37:04,164 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 956 transitions. Word has length 43 [2024-09-11 19:37:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:04,164 INFO L474 AbstractCegarLoop]: Abstraction has 858 states and 956 transitions. [2024-09-11 19:37:04,164 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 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 19:37:04,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:04,164 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 956 transitions. [2024-09-11 19:37:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:37:04,165 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:04,165 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:04,177 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2024-09-11 19:37:04,365 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2024-09-11 19:37:04,366 INFO L399 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:04,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:04,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1064914274, now seen corresponding path program 96 times [2024-09-11 19:37:04,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:04,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759515081] [2024-09-11 19:37:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:04,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-11 19:37:04,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:04,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759515081] [2024-09-11 19:37:04,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759515081] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:04,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91621918] [2024-09-11 19:37:04,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:37:04,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:04,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:04,548 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:04,549 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-09-11 19:37:04,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-11 19:37:04,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:04,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-11 19:37:04,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-11 19:37:04,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-11 19:37:05,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91621918] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:05,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:05,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-09-11 19:37:05,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069632499] [2024-09-11 19:37:05,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:05,233 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-11 19:37:05,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:05,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-11 19:37:05,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2024-09-11 19:37:05,234 INFO L87 Difference]: Start difference. First operand 858 states and 956 transitions. Second operand has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 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 19:37:06,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:06,057 INFO L93 Difference]: Finished difference Result 1008 states and 1130 transitions. [2024-09-11 19:37:06,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:37:06,058 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 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 19:37:06,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:06,060 INFO L225 Difference]: With dead ends: 1008 [2024-09-11 19:37:06,060 INFO L226 Difference]: Without dead ends: 938 [2024-09-11 19:37:06,060 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=300, Invalid=2250, Unknown=0, NotChecked=0, Total=2550 [2024-09-11 19:37:06,061 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:06,061 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 358 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:37:06,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2024-09-11 19:37:06,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 938. [2024-09-11 19:37:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.104589114194237) internal successors, (1035), 937 states have internal predecessors, (1035), 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 19:37:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1035 transitions. [2024-09-11 19:37:06,473 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1035 transitions. Word has length 43 [2024-09-11 19:37:06,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:06,473 INFO L474 AbstractCegarLoop]: Abstraction has 938 states and 1035 transitions. [2024-09-11 19:37:06,473 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 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 19:37:06,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1035 transitions. [2024-09-11 19:37:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:37:06,474 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:06,474 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:06,486 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2024-09-11 19:37:06,674 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2024-09-11 19:37:06,674 INFO L399 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:06,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -463964647, now seen corresponding path program 97 times [2024-09-11 19:37:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:06,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136295399] [2024-09-11 19:37:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:06,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:37:06,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:06,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136295399] [2024-09-11 19:37:06,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136295399] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:06,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183959752] [2024-09-11 19:37:06,984 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:37:06,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:06,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:06,985 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:06,985 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-09-11 19:37:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:07,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-11 19:37:07,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:37:07,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:37:07,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183959752] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:07,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:07,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 43 [2024-09-11 19:37:07,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958185986] [2024-09-11 19:37:07,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:07,633 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-11 19:37:07,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:07,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-11 19:37:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2024-09-11 19:37:07,634 INFO L87 Difference]: Start difference. First operand 938 states and 1035 transitions. Second operand has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 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 19:37:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:08,458 INFO L93 Difference]: Finished difference Result 977 states and 1078 transitions. [2024-09-11 19:37:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:37:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 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 19:37:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:08,460 INFO L225 Difference]: With dead ends: 977 [2024-09-11 19:37:08,460 INFO L226 Difference]: Without dead ends: 945 [2024-09-11 19:37:08,461 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=2674, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:37:08,461 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:08,461 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 557 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:37:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-09-11 19:37:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 933. [2024-09-11 19:37:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 932 states have (on average 1.1062231759656653) internal successors, (1031), 932 states have internal predecessors, (1031), 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 19:37:08,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1031 transitions. [2024-09-11 19:37:08,879 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1031 transitions. Word has length 43 [2024-09-11 19:37:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:08,879 INFO L474 AbstractCegarLoop]: Abstraction has 933 states and 1031 transitions. [2024-09-11 19:37:08,879 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 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 19:37:08,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1031 transitions. [2024-09-11 19:37:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:37:08,881 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:08,881 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:08,898 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2024-09-11 19:37:09,081 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2024-09-11 19:37:09,081 INFO L399 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:09,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 372968958, now seen corresponding path program 98 times [2024-09-11 19:37:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:09,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381109074] [2024-09-11 19:37:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:09,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-09-11 19:37:09,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381109074] [2024-09-11 19:37:09,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381109074] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:09,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328017370] [2024-09-11 19:37:09,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:37:09,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:09,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:09,334 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:09,335 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-09-11 19:37:09,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:37:09,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:09,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-11 19:37:09,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-11 19:37:09,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-11 19:37:10,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328017370] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:10,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:10,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 41 [2024-09-11 19:37:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144517123] [2024-09-11 19:37:10,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:10,048 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-11 19:37:10,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:10,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-11 19:37:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 19:37:10,049 INFO L87 Difference]: Start difference. First operand 933 states and 1031 transitions. Second operand has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 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 19:37:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:10,993 INFO L93 Difference]: Finished difference Result 971 states and 1069 transitions. [2024-09-11 19:37:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-11 19:37:10,993 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 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 19:37:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:10,996 INFO L225 Difference]: With dead ends: 971 [2024-09-11 19:37:10,996 INFO L226 Difference]: Without dead ends: 933 [2024-09-11 19:37:10,996 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=2428, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:37:10,996 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:10,996 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 386 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:37:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2024-09-11 19:37:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 933. [2024-09-11 19:37:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 932 states have (on average 1.0933476394849786) internal successors, (1019), 932 states have internal predecessors, (1019), 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 19:37:11,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1019 transitions. [2024-09-11 19:37:11,409 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1019 transitions. Word has length 43 [2024-09-11 19:37:11,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:11,409 INFO L474 AbstractCegarLoop]: Abstraction has 933 states and 1019 transitions. [2024-09-11 19:37:11,409 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 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 19:37:11,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1019 transitions. [2024-09-11 19:37:11,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-11 19:37:11,410 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:11,410 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:11,422 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2024-09-11 19:37:11,610 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2024-09-11 19:37:11,611 INFO L399 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:11,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1861315341, now seen corresponding path program 99 times [2024-09-11 19:37:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:11,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223216853] [2024-09-11 19:37:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:11,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:12,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:12,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223216853] [2024-09-11 19:37:12,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223216853] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:12,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777932668] [2024-09-11 19:37:12,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:37:12,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:12,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:12,106 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:12,106 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-09-11 19:37:12,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-09-11 19:37:12,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:12,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 19:37:12,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:13,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:13,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777932668] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:13,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:13,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 69 [2024-09-11 19:37:13,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034882276] [2024-09-11 19:37:13,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:13,877 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-11 19:37:13,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:13,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-11 19:37:13,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=4491, Unknown=0, NotChecked=0, Total=4692 [2024-09-11 19:37:13,878 INFO L87 Difference]: Start difference. First operand 933 states and 1019 transitions. Second operand has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 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 19:37:15,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:15,720 INFO L93 Difference]: Finished difference Result 1376 states and 1483 transitions. [2024-09-11 19:37:15,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 19:37:15,720 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 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 44 [2024-09-11 19:37:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:15,723 INFO L225 Difference]: With dead ends: 1376 [2024-09-11 19:37:15,723 INFO L226 Difference]: Without dead ends: 1324 [2024-09-11 19:37:15,723 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 36 SyntacticMatches, 12 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=831, Invalid=7725, Unknown=0, NotChecked=0, Total=8556 [2024-09-11 19:37:15,724 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:15,724 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 513 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:37:15,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2024-09-11 19:37:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1015. [2024-09-11 19:37:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 1.0927021696252466) internal successors, (1108), 1014 states have internal predecessors, (1108), 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 19:37:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1108 transitions. [2024-09-11 19:37:16,277 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1108 transitions. Word has length 44 [2024-09-11 19:37:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:16,277 INFO L474 AbstractCegarLoop]: Abstraction has 1015 states and 1108 transitions. [2024-09-11 19:37:16,277 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 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 19:37:16,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1108 transitions. [2024-09-11 19:37:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-11 19:37:16,278 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:16,278 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:16,290 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2024-09-11 19:37:16,478 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,102 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:16,479 INFO L399 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:16,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2136498170, now seen corresponding path program 100 times [2024-09-11 19:37:16,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:16,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009595915] [2024-09-11 19:37:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:16,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:16,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:16,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009595915] [2024-09-11 19:37:16,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009595915] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:16,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751249513] [2024-09-11 19:37:16,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:37:16,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:16,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:16,965 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:16,965 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-09-11 19:37:17,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:37:17,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:17,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 19:37:17,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:17,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:18,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751249513] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:18,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:18,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 69 [2024-09-11 19:37:18,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260019891] [2024-09-11 19:37:18,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:18,782 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-11 19:37:18,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:18,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-11 19:37:18,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=4491, Unknown=0, NotChecked=0, Total=4692 [2024-09-11 19:37:18,783 INFO L87 Difference]: Start difference. First operand 1015 states and 1108 transitions. Second operand has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 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 19:37:20,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:20,900 INFO L93 Difference]: Finished difference Result 1048 states and 1148 transitions. [2024-09-11 19:37:20,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 19:37:20,900 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 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 44 [2024-09-11 19:37:20,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:20,903 INFO L225 Difference]: With dead ends: 1048 [2024-09-11 19:37:20,903 INFO L226 Difference]: Without dead ends: 1022 [2024-09-11 19:37:20,904 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 35 SyntacticMatches, 13 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=465, Invalid=8091, Unknown=0, NotChecked=0, Total=8556 [2024-09-11 19:37:20,904 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:20,904 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 693 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:37:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2024-09-11 19:37:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1022. [2024-09-11 19:37:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1021 states have (on average 1.0920666013712046) internal successors, (1115), 1021 states have internal predecessors, (1115), 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 19:37:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1115 transitions. [2024-09-11 19:37:21,389 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1115 transitions. Word has length 44 [2024-09-11 19:37:21,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:21,389 INFO L474 AbstractCegarLoop]: Abstraction has 1022 states and 1115 transitions. [2024-09-11 19:37:21,389 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 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 19:37:21,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:21,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1115 transitions. [2024-09-11 19:37:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-11 19:37:21,390 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:21,390 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:21,401 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2024-09-11 19:37:21,590 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2024-09-11 19:37:21,591 INFO L399 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:21,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:21,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2065962706, now seen corresponding path program 101 times [2024-09-11 19:37:21,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:21,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108061613] [2024-09-11 19:37:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:21,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:37:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:21,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108061613] [2024-09-11 19:37:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108061613] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:21,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467308103] [2024-09-11 19:37:21,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:37:21,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:21,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:21,718 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:21,719 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-09-11 19:37:21,806 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-11 19:37:21,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:21,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:37:21,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:37:21,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:37:22,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467308103] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:22,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:22,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-09-11 19:37:22,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501530118] [2024-09-11 19:37:22,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:22,005 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-11 19:37:22,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:22,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-11 19:37:22,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:37:22,006 INFO L87 Difference]: Start difference. First operand 1022 states and 1115 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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 19:37:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:22,750 INFO L93 Difference]: Finished difference Result 1172 states and 1288 transitions. [2024-09-11 19:37:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-11 19:37:22,750 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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 44 [2024-09-11 19:37:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:22,753 INFO L225 Difference]: With dead ends: 1172 [2024-09-11 19:37:22,753 INFO L226 Difference]: Without dead ends: 1010 [2024-09-11 19:37:22,753 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 65 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=744, Invalid=1418, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 19:37:22,754 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 67 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:22,754 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 189 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:37:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2024-09-11 19:37:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1010. [2024-09-11 19:37:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 1009 states have (on average 1.089197224975223) internal successors, (1099), 1009 states have internal predecessors, (1099), 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 19:37:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1099 transitions. [2024-09-11 19:37:23,235 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1099 transitions. Word has length 44 [2024-09-11 19:37:23,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:23,236 INFO L474 AbstractCegarLoop]: Abstraction has 1010 states and 1099 transitions. [2024-09-11 19:37:23,236 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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 19:37:23,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:23,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1099 transitions. [2024-09-11 19:37:23,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-11 19:37:23,237 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:23,237 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:23,249 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2024-09-11 19:37:23,437 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:23,437 INFO L399 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:23,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:23,438 INFO L85 PathProgramCache]: Analyzing trace with hash -850520933, now seen corresponding path program 102 times [2024-09-11 19:37:23,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:23,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349460023] [2024-09-11 19:37:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:23,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:37:23,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:23,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349460023] [2024-09-11 19:37:23,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349460023] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:23,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025473991] [2024-09-11 19:37:23,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:37:23,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:23,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:23,569 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:23,570 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-09-11 19:37:23,655 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-11 19:37:23,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:23,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:37:23,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:37:23,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:37:23,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025473991] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:23,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:23,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-09-11 19:37:23,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740406391] [2024-09-11 19:37:23,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:23,878 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-11 19:37:23,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-11 19:37:23,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:37:23,878 INFO L87 Difference]: Start difference. First operand 1010 states and 1099 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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 19:37:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:24,619 INFO L93 Difference]: Finished difference Result 1036 states and 1125 transitions. [2024-09-11 19:37:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-11 19:37:24,619 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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 44 [2024-09-11 19:37:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:24,622 INFO L225 Difference]: With dead ends: 1036 [2024-09-11 19:37:24,622 INFO L226 Difference]: Without dead ends: 1031 [2024-09-11 19:37:24,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 65 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=744, Invalid=1418, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 19:37:24,623 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 72 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:24,623 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 206 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:37:24,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2024-09-11 19:37:25,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1011. [2024-09-11 19:37:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 1.0891089108910892) internal successors, (1100), 1010 states have internal predecessors, (1100), 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 19:37:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1100 transitions. [2024-09-11 19:37:25,097 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1100 transitions. Word has length 44 [2024-09-11 19:37:25,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:25,097 INFO L474 AbstractCegarLoop]: Abstraction has 1011 states and 1100 transitions. [2024-09-11 19:37:25,097 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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 19:37:25,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:25,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1100 transitions. [2024-09-11 19:37:25,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-11 19:37:25,098 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:25,098 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:25,110 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2024-09-11 19:37:25,298 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2024-09-11 19:37:25,299 INFO L399 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:25,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:25,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1251658572, now seen corresponding path program 103 times [2024-09-11 19:37:25,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:25,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145349121] [2024-09-11 19:37:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:25,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:37:25,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:25,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145349121] [2024-09-11 19:37:25,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145349121] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:25,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867281339] [2024-09-11 19:37:25,846 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:37:25,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:25,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:25,847 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:25,847 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2024-09-11 19:37:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:25,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-09-11 19:37:25,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:37:26,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:37:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867281339] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:26,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:26,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 56 [2024-09-11 19:37:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993453617] [2024-09-11 19:37:26,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:26,599 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-11 19:37:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-11 19:37:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2946, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 19:37:26,600 INFO L87 Difference]: Start difference. First operand 1011 states and 1100 transitions. Second operand has 56 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 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 19:37:28,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:28,240 INFO L93 Difference]: Finished difference Result 1091 states and 1188 transitions. [2024-09-11 19:37:28,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-11 19:37:28,240 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 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 45 [2024-09-11 19:37:28,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:28,243 INFO L225 Difference]: With dead ends: 1091 [2024-09-11 19:37:28,243 INFO L226 Difference]: Without dead ends: 1083 [2024-09-11 19:37:28,243 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=209, Invalid=5047, Unknown=0, NotChecked=0, Total=5256 [2024-09-11 19:37:28,244 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 125 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:28,244 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 2060 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-11 19:37:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2024-09-11 19:37:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1019. [2024-09-11 19:37:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 1.0893909626719056) internal successors, (1109), 1018 states have internal predecessors, (1109), 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 19:37:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1109 transitions. [2024-09-11 19:37:28,728 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1109 transitions. Word has length 45 [2024-09-11 19:37:28,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:28,728 INFO L474 AbstractCegarLoop]: Abstraction has 1019 states and 1109 transitions. [2024-09-11 19:37:28,728 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 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 19:37:28,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1109 transitions. [2024-09-11 19:37:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-11 19:37:28,729 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:28,729 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:28,741 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2024-09-11 19:37:28,930 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2024-09-11 19:37:28,930 INFO L399 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:28,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:28,930 INFO L85 PathProgramCache]: Analyzing trace with hash 394281648, now seen corresponding path program 104 times [2024-09-11 19:37:28,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:28,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141270558] [2024-09-11 19:37:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:28,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:37:29,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:29,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141270558] [2024-09-11 19:37:29,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141270558] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:29,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448624137] [2024-09-11 19:37:29,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:37:29,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:29,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:29,431 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:29,431 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2024-09-11 19:37:29,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:37:29,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:29,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-11 19:37:29,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:37:30,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:37:30,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448624137] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:30,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:30,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 54 [2024-09-11 19:37:30,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110353922] [2024-09-11 19:37:30,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:30,186 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-11 19:37:30,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:30,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-11 19:37:30,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2729, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:37:30,187 INFO L87 Difference]: Start difference. First operand 1019 states and 1109 transitions. Second operand has 54 states, 54 states have (on average 1.3518518518518519) internal successors, (73), 54 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 19:37:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:31,543 INFO L93 Difference]: Finished difference Result 1040 states and 1129 transitions. [2024-09-11 19:37:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-11 19:37:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.3518518518518519) internal successors, (73), 54 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) Word has length 45 [2024-09-11 19:37:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:31,546 INFO L225 Difference]: With dead ends: 1040 [2024-09-11 19:37:31,546 INFO L226 Difference]: Without dead ends: 1011 [2024-09-11 19:37:31,546 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=207, Invalid=4623, Unknown=0, NotChecked=0, Total=4830 [2024-09-11 19:37:31,546 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 100 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 2063 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:31,547 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1766 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2063 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:37:31,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2024-09-11 19:37:32,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1011. [2024-09-11 19:37:32,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 1.0891089108910892) internal successors, (1100), 1010 states have internal predecessors, (1100), 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 19:37:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1100 transitions. [2024-09-11 19:37:32,025 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1100 transitions. Word has length 45 [2024-09-11 19:37:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:32,026 INFO L474 AbstractCegarLoop]: Abstraction has 1011 states and 1100 transitions. [2024-09-11 19:37:32,026 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.3518518518518519) internal successors, (73), 54 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 19:37:32,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1100 transitions. [2024-09-11 19:37:32,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-11 19:37:32,027 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:32,027 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:32,039 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2024-09-11 19:37:32,227 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2024-09-11 19:37:32,227 INFO L399 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:32,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1073285300, now seen corresponding path program 105 times [2024-09-11 19:37:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:32,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955817724] [2024-09-11 19:37:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:37:32,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955817724] [2024-09-11 19:37:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955817724] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813368098] [2024-09-11 19:37:32,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:37:32,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:32,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:32,678 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:32,678 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2024-09-11 19:37:32,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-11 19:37:32,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:32,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-11 19:37:32,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:37:33,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:37:33,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813368098] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:33,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:33,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 52 [2024-09-11 19:37:33,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526317053] [2024-09-11 19:37:33,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:33,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-11 19:37:33,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:33,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-11 19:37:33,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2520, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:37:33,421 INFO L87 Difference]: Start difference. First operand 1011 states and 1100 transitions. Second operand has 52 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 52 states have internal predecessors, (71), 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 19:37:34,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:34,689 INFO L93 Difference]: Finished difference Result 1031 states and 1119 transitions. [2024-09-11 19:37:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 19:37:34,689 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 52 states have internal predecessors, (71), 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 45 [2024-09-11 19:37:34,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:34,692 INFO L225 Difference]: With dead ends: 1031 [2024-09-11 19:37:34,692 INFO L226 Difference]: Without dead ends: 1001 [2024-09-11 19:37:34,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=205, Invalid=4217, Unknown=0, NotChecked=0, Total=4422 [2024-09-11 19:37:34,693 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 87 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:34,693 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1529 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:37:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2024-09-11 19:37:35,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2024-09-11 19:37:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.089) internal successors, (1089), 1000 states have internal predecessors, (1089), 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 19:37:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1089 transitions. [2024-09-11 19:37:35,194 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1089 transitions. Word has length 45 [2024-09-11 19:37:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:35,194 INFO L474 AbstractCegarLoop]: Abstraction has 1001 states and 1089 transitions. [2024-09-11 19:37:35,194 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 52 states have internal predecessors, (71), 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 19:37:35,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:35,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1089 transitions. [2024-09-11 19:37:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-11 19:37:35,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:35,195 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:35,207 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2024-09-11 19:37:35,395 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2024-09-11 19:37:35,396 INFO L399 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:35,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1422678352, now seen corresponding path program 106 times [2024-09-11 19:37:35,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:35,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032215248] [2024-09-11 19:37:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:35,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:37:35,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:35,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032215248] [2024-09-11 19:37:35,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032215248] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:35,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618879416] [2024-09-11 19:37:35,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:37:35,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:35,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:35,816 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:35,817 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2024-09-11 19:37:35,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:37:35,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:35,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-09-11 19:37:35,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:37:36,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:37:36,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618879416] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:36,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:36,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 50 [2024-09-11 19:37:36,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735956155] [2024-09-11 19:37:36,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:36,524 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-11 19:37:36,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-11 19:37:36,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=2319, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 19:37:36,525 INFO L87 Difference]: Start difference. First operand 1001 states and 1089 transitions. Second operand has 50 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 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 19:37:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:37,683 INFO L93 Difference]: Finished difference Result 1020 states and 1107 transitions. [2024-09-11 19:37:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 19:37:37,683 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 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 45 [2024-09-11 19:37:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:37,687 INFO L225 Difference]: With dead ends: 1020 [2024-09-11 19:37:37,687 INFO L226 Difference]: Without dead ends: 989 [2024-09-11 19:37:37,687 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=203, Invalid=3829, Unknown=0, NotChecked=0, Total=4032 [2024-09-11 19:37:37,688 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:37,688 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1233 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:37:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2024-09-11 19:37:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2024-09-11 19:37:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 988 states have (on average 1.0890688259109311) internal successors, (1076), 988 states have internal predecessors, (1076), 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 19:37:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1076 transitions. [2024-09-11 19:37:38,254 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1076 transitions. Word has length 45 [2024-09-11 19:37:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:38,254 INFO L474 AbstractCegarLoop]: Abstraction has 989 states and 1076 transitions. [2024-09-11 19:37:38,254 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 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 19:37:38,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1076 transitions. [2024-09-11 19:37:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-11 19:37:38,255 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:38,255 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:38,267 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2024-09-11 19:37:38,455 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2024-09-11 19:37:38,456 INFO L399 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:38,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:38,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1671693132, now seen corresponding path program 107 times [2024-09-11 19:37:38,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313841690] [2024-09-11 19:37:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:37:38,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:38,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313841690] [2024-09-11 19:37:38,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313841690] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:38,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603358640] [2024-09-11 19:37:38,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:37:38,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:38,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:38,820 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:38,821 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2024-09-11 19:37:38,910 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:37:38,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:38,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-11 19:37:38,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:37:39,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:37:39,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603358640] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:39,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:39,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 48 [2024-09-11 19:37:39,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063292407] [2024-09-11 19:37:39,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:39,476 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-11 19:37:39,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-11 19:37:39,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2126, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:37:39,477 INFO L87 Difference]: Start difference. First operand 989 states and 1076 transitions. Second operand has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 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 19:37:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:40,524 INFO L93 Difference]: Finished difference Result 1007 states and 1093 transitions. [2024-09-11 19:37:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 19:37:40,524 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 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 45 [2024-09-11 19:37:40,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:40,527 INFO L225 Difference]: With dead ends: 1007 [2024-09-11 19:37:40,527 INFO L226 Difference]: Without dead ends: 975 [2024-09-11 19:37:40,527 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=201, Invalid=3459, Unknown=0, NotChecked=0, Total=3660 [2024-09-11 19:37:40,527 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:40,527 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1014 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:37:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-09-11 19:37:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2024-09-11 19:37:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.0893223819301847) internal successors, (1061), 974 states have internal predecessors, (1061), 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 19:37:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1061 transitions. [2024-09-11 19:37:41,036 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1061 transitions. Word has length 45 [2024-09-11 19:37:41,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:41,036 INFO L474 AbstractCegarLoop]: Abstraction has 975 states and 1061 transitions. [2024-09-11 19:37:41,036 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 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 19:37:41,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1061 transitions. [2024-09-11 19:37:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-11 19:37:41,037 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:41,037 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:41,049 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2024-09-11 19:37:41,238 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2024-09-11 19:37:41,238 INFO L399 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:41,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash 370551472, now seen corresponding path program 108 times [2024-09-11 19:37:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:41,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346800965] [2024-09-11 19:37:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:41,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:37:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:41,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346800965] [2024-09-11 19:37:41,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346800965] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:41,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945640171] [2024-09-11 19:37:41,556 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:37:41,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:41,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:41,557 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:41,558 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2024-09-11 19:37:41,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:37:41,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:41,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:37:41,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:37:42,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:37:42,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945640171] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:42,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:42,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 46 [2024-09-11 19:37:42,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794481314] [2024-09-11 19:37:42,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:42,210 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-11 19:37:42,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:42,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-11 19:37:42,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1941, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:37:42,211 INFO L87 Difference]: Start difference. First operand 975 states and 1061 transitions. Second operand has 46 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 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 19:37:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:43,098 INFO L93 Difference]: Finished difference Result 992 states and 1077 transitions. [2024-09-11 19:37:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 19:37:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 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) Word has length 45 [2024-09-11 19:37:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:43,101 INFO L225 Difference]: With dead ends: 992 [2024-09-11 19:37:43,101 INFO L226 Difference]: Without dead ends: 959 [2024-09-11 19:37:43,101 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=3107, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 19:37:43,101 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:43,101 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 677 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:37:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-09-11 19:37:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2024-09-11 19:37:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.0897703549060542) internal successors, (1044), 958 states have internal predecessors, (1044), 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 19:37:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1044 transitions. [2024-09-11 19:37:43,566 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1044 transitions. Word has length 45 [2024-09-11 19:37:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:43,566 INFO L474 AbstractCegarLoop]: Abstraction has 959 states and 1044 transitions. [2024-09-11 19:37:43,566 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 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 19:37:43,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:43,566 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1044 transitions. [2024-09-11 19:37:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-11 19:37:43,567 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:43,567 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:43,579 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2024-09-11 19:37:43,768 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2024-09-11 19:37:43,768 INFO L399 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:43,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:43,768 INFO L85 PathProgramCache]: Analyzing trace with hash -567152820, now seen corresponding path program 109 times [2024-09-11 19:37:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:43,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329913236] [2024-09-11 19:37:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-11 19:37:44,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:44,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329913236] [2024-09-11 19:37:44,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329913236] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:44,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965962751] [2024-09-11 19:37:44,086 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:37:44,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:44,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:44,087 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:44,088 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2024-09-11 19:37:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:44,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-11 19:37:44,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-11 19:37:44,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-11 19:37:44,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965962751] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:44,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:44,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 44 [2024-09-11 19:37:44,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611862119] [2024-09-11 19:37:44,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:44,722 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-11 19:37:44,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:44,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-11 19:37:44,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1764, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:37:44,722 INFO L87 Difference]: Start difference. First operand 959 states and 1044 transitions. Second operand has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 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 19:37:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:45,553 INFO L93 Difference]: Finished difference Result 987 states and 1075 transitions. [2024-09-11 19:37:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:37:45,553 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 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) Word has length 45 [2024-09-11 19:37:45,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:45,556 INFO L225 Difference]: With dead ends: 987 [2024-09-11 19:37:45,556 INFO L226 Difference]: Without dead ends: 982 [2024-09-11 19:37:45,556 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=197, Invalid=2773, Unknown=0, NotChecked=0, Total=2970 [2024-09-11 19:37:45,557 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:45,557 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 482 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:37:45,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2024-09-11 19:37:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 973. [2024-09-11 19:37:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 1.0905349794238683) internal successors, (1060), 972 states have internal predecessors, (1060), 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 19:37:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1060 transitions. [2024-09-11 19:37:46,067 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1060 transitions. Word has length 45 [2024-09-11 19:37:46,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:46,067 INFO L474 AbstractCegarLoop]: Abstraction has 973 states and 1060 transitions. [2024-09-11 19:37:46,067 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 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 19:37:46,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1060 transitions. [2024-09-11 19:37:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-11 19:37:46,068 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:46,068 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:46,081 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2024-09-11 19:37:46,268 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2024-09-11 19:37:46,269 INFO L399 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:46,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:46,269 INFO L85 PathProgramCache]: Analyzing trace with hash -408565190, now seen corresponding path program 110 times [2024-09-11 19:37:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:46,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944807740] [2024-09-11 19:37:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:46,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:46,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:46,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944807740] [2024-09-11 19:37:46,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944807740] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:46,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264660586] [2024-09-11 19:37:46,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:37:46,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:46,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:46,796 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:46,797 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2024-09-11 19:37:46,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:37:46,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:46,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:37:46,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:47,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:48,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264660586] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:48,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:48,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 74 [2024-09-11 19:37:48,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605220414] [2024-09-11 19:37:48,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:48,788 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-11 19:37:48,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-11 19:37:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=5185, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 19:37:48,789 INFO L87 Difference]: Start difference. First operand 973 states and 1060 transitions. Second operand has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 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 19:37:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:51,047 INFO L93 Difference]: Finished difference Result 1455 states and 1563 transitions. [2024-09-11 19:37:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 19:37:51,048 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 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 46 [2024-09-11 19:37:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:51,051 INFO L225 Difference]: With dead ends: 1455 [2024-09-11 19:37:51,051 INFO L226 Difference]: Without dead ends: 1401 [2024-09-11 19:37:51,052 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 36 SyntacticMatches, 13 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=945, Invalid=8955, Unknown=0, NotChecked=0, Total=9900 [2024-09-11 19:37:51,052 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:51,053 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 547 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:37:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2024-09-11 19:37:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1056. [2024-09-11 19:37:51,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1055 states have (on average 1.0900473933649288) internal successors, (1150), 1055 states have internal predecessors, (1150), 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 19:37:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1150 transitions. [2024-09-11 19:37:51,658 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1150 transitions. Word has length 46 [2024-09-11 19:37:51,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:51,658 INFO L474 AbstractCegarLoop]: Abstraction has 1056 states and 1150 transitions. [2024-09-11 19:37:51,658 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 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 19:37:51,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:51,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1150 transitions. [2024-09-11 19:37:51,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-11 19:37:51,660 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:51,660 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:51,677 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2024-09-11 19:37:51,860 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2024-09-11 19:37:51,860 INFO L399 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:51,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:51,861 INFO L85 PathProgramCache]: Analyzing trace with hash -467832083, now seen corresponding path program 111 times [2024-09-11 19:37:51,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:51,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536115990] [2024-09-11 19:37:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:51,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:52,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536115990] [2024-09-11 19:37:52,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536115990] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512022800] [2024-09-11 19:37:52,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:37:52,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:52,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:52,344 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:52,344 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2024-09-11 19:37:52,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-09-11 19:37:52,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:52,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:37:52,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:53,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:37:54,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512022800] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:54,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:54,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 74 [2024-09-11 19:37:54,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599278019] [2024-09-11 19:37:54,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:54,366 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-11 19:37:54,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-11 19:37:54,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=5186, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 19:37:54,367 INFO L87 Difference]: Start difference. First operand 1056 states and 1150 transitions. Second operand has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 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 19:37:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:56,871 INFO L93 Difference]: Finished difference Result 1090 states and 1191 transitions. [2024-09-11 19:37:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 19:37:56,871 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 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 46 [2024-09-11 19:37:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:56,874 INFO L225 Difference]: With dead ends: 1090 [2024-09-11 19:37:56,874 INFO L226 Difference]: Without dead ends: 1063 [2024-09-11 19:37:56,875 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 35 SyntacticMatches, 14 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=515, Invalid=9385, Unknown=0, NotChecked=0, Total=9900 [2024-09-11 19:37:56,875 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:56,875 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 801 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-11 19:37:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2024-09-11 19:37:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1063. [2024-09-11 19:37:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 1.0894538606403013) internal successors, (1157), 1062 states have internal predecessors, (1157), 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 19:37:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1157 transitions. [2024-09-11 19:37:57,443 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1157 transitions. Word has length 46 [2024-09-11 19:37:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:57,443 INFO L474 AbstractCegarLoop]: Abstraction has 1063 states and 1157 transitions. [2024-09-11 19:37:57,443 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 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 19:37:57,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1157 transitions. [2024-09-11 19:37:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-11 19:37:57,444 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:57,444 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:57,456 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2024-09-11 19:37:57,644 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:57,644 INFO L399 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:57,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:57,645 INFO L85 PathProgramCache]: Analyzing trace with hash -372675909, now seen corresponding path program 112 times [2024-09-11 19:37:57,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:57,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215990161] [2024-09-11 19:37:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:57,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:37:57,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:57,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215990161] [2024-09-11 19:37:57,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215990161] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:57,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740576389] [2024-09-11 19:37:57,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:37:57,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:57,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:57,787 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:57,787 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2024-09-11 19:37:57,877 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:37:57,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:57,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-11 19:37:57,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:37:58,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:37:58,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740576389] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:58,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:58,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2024-09-11 19:37:58,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236597770] [2024-09-11 19:37:58,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:58,094 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-11 19:37:58,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:58,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-11 19:37:58,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2024-09-11 19:37:58,094 INFO L87 Difference]: Start difference. First operand 1063 states and 1157 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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 19:37:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:58,997 INFO L93 Difference]: Finished difference Result 1153 states and 1264 transitions. [2024-09-11 19:37:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-11 19:37:58,997 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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) Word has length 46 [2024-09-11 19:37:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:58,999 INFO L225 Difference]: With dead ends: 1153 [2024-09-11 19:37:58,999 INFO L226 Difference]: Without dead ends: 1136 [2024-09-11 19:37:59,000 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 68 SyntacticMatches, 14 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2024-09-11 19:37:59,000 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 47 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:59,000 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 177 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:37:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2024-09-11 19:37:59,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1109. [2024-09-11 19:37:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1108 states have (on average 1.0992779783393503) internal successors, (1218), 1108 states have internal predecessors, (1218), 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 19:37:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1218 transitions. [2024-09-11 19:37:59,563 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1218 transitions. Word has length 46 [2024-09-11 19:37:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:59,563 INFO L474 AbstractCegarLoop]: Abstraction has 1109 states and 1218 transitions. [2024-09-11 19:37:59,563 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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 19:37:59,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1218 transitions. [2024-09-11 19:37:59,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-11 19:37:59,564 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:59,564 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:59,576 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2024-09-11 19:37:59,765 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:59,765 INFO L399 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:59,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:59,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1348686610, now seen corresponding path program 113 times [2024-09-11 19:37:59,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:59,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47210318] [2024-09-11 19:37:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:59,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:37:59,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:59,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47210318] [2024-09-11 19:37:59,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47210318] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:59,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427520860] [2024-09-11 19:37:59,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:37:59,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:59,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:59,901 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:59,902 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2024-09-11 19:37:59,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-11 19:37:59,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:59,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-11 19:37:59,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:38:00,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-11 19:38:00,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427520860] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:00,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:00,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2024-09-11 19:38:00,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725756860] [2024-09-11 19:38:00,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:00,214 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-11 19:38:00,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-11 19:38:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2024-09-11 19:38:00,215 INFO L87 Difference]: Start difference. First operand 1109 states and 1218 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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 19:38:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:01,149 INFO L93 Difference]: Finished difference Result 1486 states and 1668 transitions. [2024-09-11 19:38:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-11 19:38:01,150 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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) Word has length 46 [2024-09-11 19:38:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:01,152 INFO L225 Difference]: With dead ends: 1486 [2024-09-11 19:38:01,152 INFO L226 Difference]: Without dead ends: 1251 [2024-09-11 19:38:01,153 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 68 SyntacticMatches, 14 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2024-09-11 19:38:01,153 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 55 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:01,153 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 125 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:38:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2024-09-11 19:38:01,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1251. [2024-09-11 19:38:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1250 states have (on average 1.1) internal successors, (1375), 1250 states have internal predecessors, (1375), 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 19:38:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1375 transitions. [2024-09-11 19:38:01,793 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1375 transitions. Word has length 46 [2024-09-11 19:38:01,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:01,793 INFO L474 AbstractCegarLoop]: Abstraction has 1251 states and 1375 transitions. [2024-09-11 19:38:01,793 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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 19:38:01,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:01,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1375 transitions. [2024-09-11 19:38:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:38:01,794 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:01,794 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:01,806 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2024-09-11 19:38:01,994 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2024-09-11 19:38:01,995 INFO L399 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:01,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:01,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2121799353, now seen corresponding path program 114 times [2024-09-11 19:38:01,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:01,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056229879] [2024-09-11 19:38:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:01,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:38:02,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:02,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056229879] [2024-09-11 19:38:02,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056229879] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:02,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209253759] [2024-09-11 19:38:02,582 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:38:02,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:02,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:02,583 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:02,584 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2024-09-11 19:38:02,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-11 19:38:02,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:38:02,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-09-11 19:38:02,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:38:03,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:38:03,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209253759] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:03,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:03,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 59 [2024-09-11 19:38:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747076788] [2024-09-11 19:38:03,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:03,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-11 19:38:03,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:03,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-11 19:38:03,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=3281, Unknown=0, NotChecked=0, Total=3422 [2024-09-11 19:38:03,416 INFO L87 Difference]: Start difference. First operand 1251 states and 1375 transitions. Second operand has 59 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 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 19:38:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:05,204 INFO L93 Difference]: Finished difference Result 1342 states and 1475 transitions. [2024-09-11 19:38:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-11 19:38:05,204 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 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) Word has length 47 [2024-09-11 19:38:05,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:05,207 INFO L225 Difference]: With dead ends: 1342 [2024-09-11 19:38:05,207 INFO L226 Difference]: Without dead ends: 1334 [2024-09-11 19:38:05,207 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=220, Invalid=5632, Unknown=0, NotChecked=0, Total=5852 [2024-09-11 19:38:05,207 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 134 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:05,207 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 2345 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2793 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-11 19:38:05,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2024-09-11 19:38:05,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1259. [2024-09-11 19:38:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.1001589825119238) internal successors, (1384), 1258 states have internal predecessors, (1384), 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 19:38:05,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1384 transitions. [2024-09-11 19:38:05,936 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1384 transitions. Word has length 47 [2024-09-11 19:38:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:05,936 INFO L474 AbstractCegarLoop]: Abstraction has 1259 states and 1384 transitions. [2024-09-11 19:38:05,937 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 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 19:38:05,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1384 transitions. [2024-09-11 19:38:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:38:05,938 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:05,938 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:05,950 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2024-09-11 19:38:06,169 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2024-09-11 19:38:06,169 INFO L399 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:06,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1337160519, now seen corresponding path program 115 times [2024-09-11 19:38:06,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:06,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524849780] [2024-09-11 19:38:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:38:06,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:06,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524849780] [2024-09-11 19:38:06,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524849780] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:06,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452559545] [2024-09-11 19:38:06,767 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:38:06,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:06,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:06,768 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:06,769 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2024-09-11 19:38:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:06,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-09-11 19:38:06,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:38:07,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:38:07,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452559545] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:07,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:07,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 57 [2024-09-11 19:38:07,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332925225] [2024-09-11 19:38:07,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:07,583 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-11 19:38:07,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:07,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-11 19:38:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=3052, Unknown=0, NotChecked=0, Total=3192 [2024-09-11 19:38:07,584 INFO L87 Difference]: Start difference. First operand 1259 states and 1384 transitions. Second operand has 57 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 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 19:38:09,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:09,219 INFO L93 Difference]: Finished difference Result 1281 states and 1405 transitions. [2024-09-11 19:38:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-11 19:38:09,220 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 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 47 [2024-09-11 19:38:09,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:09,222 INFO L225 Difference]: With dead ends: 1281 [2024-09-11 19:38:09,223 INFO L226 Difference]: Without dead ends: 1251 [2024-09-11 19:38:09,223 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=218, Invalid=5184, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 19:38:09,223 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 109 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:09,223 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 2145 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 19:38:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2024-09-11 19:38:09,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1251. [2024-09-11 19:38:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1250 states have (on average 1.1) internal successors, (1375), 1250 states have internal predecessors, (1375), 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 19:38:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1375 transitions. [2024-09-11 19:38:09,866 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1375 transitions. Word has length 47 [2024-09-11 19:38:09,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:09,866 INFO L474 AbstractCegarLoop]: Abstraction has 1251 states and 1375 transitions. [2024-09-11 19:38:09,866 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 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 19:38:09,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1375 transitions. [2024-09-11 19:38:09,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:38:09,867 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:09,867 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:09,880 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2024-09-11 19:38:10,068 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,118 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:10,068 INFO L399 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:10,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:10,068 INFO L85 PathProgramCache]: Analyzing trace with hash 166624953, now seen corresponding path program 116 times [2024-09-11 19:38:10,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:10,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221703154] [2024-09-11 19:38:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:10,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:38:10,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:10,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221703154] [2024-09-11 19:38:10,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221703154] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:10,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042442404] [2024-09-11 19:38:10,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:38:10,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:10,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:10,564 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:10,567 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2024-09-11 19:38:10,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:38:10,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:38:10,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-11 19:38:10,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:38:11,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 19:38:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042442404] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:11,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:11,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 55 [2024-09-11 19:38:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179281994] [2024-09-11 19:38:11,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:11,431 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-11 19:38:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-11 19:38:11,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2831, Unknown=0, NotChecked=0, Total=2970 [2024-09-11 19:38:11,431 INFO L87 Difference]: Start difference. First operand 1251 states and 1375 transitions. Second operand has 55 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 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 19:38:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:12,976 INFO L93 Difference]: Finished difference Result 1272 states and 1395 transitions. [2024-09-11 19:38:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-11 19:38:12,977 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 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 47 [2024-09-11 19:38:12,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:12,979 INFO L225 Difference]: With dead ends: 1272 [2024-09-11 19:38:12,979 INFO L226 Difference]: Without dead ends: 1241 [2024-09-11 19:38:12,980 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=216, Invalid=4754, Unknown=0, NotChecked=0, Total=4970 [2024-09-11 19:38:12,980 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 94 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:12,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1803 Invalid, 2230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 19:38:12,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2024-09-11 19:38:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1241. [2024-09-11 19:38:13,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1240 states have (on average 1.1) internal successors, (1364), 1240 states have internal predecessors, (1364), 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 19:38:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1364 transitions. [2024-09-11 19:38:13,605 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1364 transitions. Word has length 47 [2024-09-11 19:38:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:13,605 INFO L474 AbstractCegarLoop]: Abstraction has 1241 states and 1364 transitions. [2024-09-11 19:38:13,605 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 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 19:38:13,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1364 transitions. [2024-09-11 19:38:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:38:13,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:13,606 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:13,617 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2024-09-11 19:38:13,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2024-09-11 19:38:13,806 INFO L399 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:13,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:13,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2079447879, now seen corresponding path program 117 times [2024-09-11 19:38:13,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:13,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437639492] [2024-09-11 19:38:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:13,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:38:14,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:14,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437639492] [2024-09-11 19:38:14,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437639492] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:14,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053833429] [2024-09-11 19:38:14,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:38:14,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:14,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:14,283 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:14,284 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2024-09-11 19:38:14,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-11 19:38:14,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:38:14,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-11 19:38:14,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:38:14,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 19:38:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053833429] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:15,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:15,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 53 [2024-09-11 19:38:15,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803955110] [2024-09-11 19:38:15,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:15,061 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-11 19:38:15,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:15,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-11 19:38:15,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2618, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 19:38:15,061 INFO L87 Difference]: Start difference. First operand 1241 states and 1364 transitions. Second operand has 53 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 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 19:38:16,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:16,425 INFO L93 Difference]: Finished difference Result 1261 states and 1383 transitions. [2024-09-11 19:38:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 19:38:16,425 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 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 47 [2024-09-11 19:38:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:16,428 INFO L225 Difference]: With dead ends: 1261 [2024-09-11 19:38:16,428 INFO L226 Difference]: Without dead ends: 1229 [2024-09-11 19:38:16,428 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=4342, Unknown=0, NotChecked=0, Total=4556 [2024-09-11 19:38:16,428 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 78 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:16,428 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1395 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:38:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2024-09-11 19:38:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2024-09-11 19:38:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 1.1001628664495113) internal successors, (1351), 1228 states have internal predecessors, (1351), 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 19:38:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1351 transitions. [2024-09-11 19:38:17,058 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1351 transitions. Word has length 47 [2024-09-11 19:38:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:17,058 INFO L474 AbstractCegarLoop]: Abstraction has 1229 states and 1351 transitions. [2024-09-11 19:38:17,058 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 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 19:38:17,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:17,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1351 transitions. [2024-09-11 19:38:17,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:38:17,059 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:17,059 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:17,071 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2024-09-11 19:38:17,260 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2024-09-11 19:38:17,260 INFO L399 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:17,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2070616391, now seen corresponding path program 118 times [2024-09-11 19:38:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312243236] [2024-09-11 19:38:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:38:17,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312243236] [2024-09-11 19:38:17,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312243236] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580356117] [2024-09-11 19:38:17,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:38:17,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:17,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:17,670 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:17,670 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2024-09-11 19:38:17,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:38:17,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:38:17,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-09-11 19:38:17,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:38:18,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-11 19:38:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580356117] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:18,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:18,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 51 [2024-09-11 19:38:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961109004] [2024-09-11 19:38:18,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:18,442 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-11 19:38:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-11 19:38:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2413, Unknown=0, NotChecked=0, Total=2550 [2024-09-11 19:38:18,443 INFO L87 Difference]: Start difference. First operand 1229 states and 1351 transitions. Second operand has 51 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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 19:38:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:19,794 INFO L93 Difference]: Finished difference Result 1248 states and 1369 transitions. [2024-09-11 19:38:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 19:38:19,795 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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 47 [2024-09-11 19:38:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:19,797 INFO L225 Difference]: With dead ends: 1248 [2024-09-11 19:38:19,798 INFO L226 Difference]: Without dead ends: 1215 [2024-09-11 19:38:19,798 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=212, Invalid=3948, Unknown=0, NotChecked=0, Total=4160 [2024-09-11 19:38:19,798 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 62 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:19,798 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1279 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:38:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2024-09-11 19:38:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2024-09-11 19:38:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 1.100494233937397) internal successors, (1336), 1214 states have internal predecessors, (1336), 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 19:38:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1336 transitions. [2024-09-11 19:38:20,427 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1336 transitions. Word has length 47 [2024-09-11 19:38:20,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:20,427 INFO L474 AbstractCegarLoop]: Abstraction has 1215 states and 1336 transitions. [2024-09-11 19:38:20,427 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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 19:38:20,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1336 transitions. [2024-09-11 19:38:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:38:20,429 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:20,429 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:20,441 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2024-09-11 19:38:20,629 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2024-09-11 19:38:20,629 INFO L399 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:20,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:20,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1834990777, now seen corresponding path program 119 times [2024-09-11 19:38:20,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:20,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775734181] [2024-09-11 19:38:20,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:20,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:38:21,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:21,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775734181] [2024-09-11 19:38:21,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775734181] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:21,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854211902] [2024-09-11 19:38:21,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:38:21,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:21,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:21,019 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:21,019 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2024-09-11 19:38:21,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:38:21,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:38:21,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-11 19:38:21,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:38:21,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 19:38:21,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854211902] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:21,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:21,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 49 [2024-09-11 19:38:21,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970760028] [2024-09-11 19:38:21,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:21,724 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-11 19:38:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-11 19:38:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2216, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 19:38:21,725 INFO L87 Difference]: Start difference. First operand 1215 states and 1336 transitions. Second operand has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 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 19:38:22,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:22,862 INFO L93 Difference]: Finished difference Result 1233 states and 1353 transitions. [2024-09-11 19:38:22,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 19:38:22,862 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 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 47 [2024-09-11 19:38:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:22,865 INFO L225 Difference]: With dead ends: 1233 [2024-09-11 19:38:22,865 INFO L226 Difference]: Without dead ends: 1199 [2024-09-11 19:38:22,865 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=3572, Unknown=0, NotChecked=0, Total=3782 [2024-09-11 19:38:22,865 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 46 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:22,866 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 784 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:38:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2024-09-11 19:38:23,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1199. [2024-09-11 19:38:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 1.1010016694490818) internal successors, (1319), 1198 states have internal predecessors, (1319), 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 19:38:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1319 transitions. [2024-09-11 19:38:23,479 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1319 transitions. Word has length 47 [2024-09-11 19:38:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:23,479 INFO L474 AbstractCegarLoop]: Abstraction has 1199 states and 1319 transitions. [2024-09-11 19:38:23,479 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 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 19:38:23,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1319 transitions. [2024-09-11 19:38:23,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:38:23,481 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:23,481 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:23,492 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2024-09-11 19:38:23,681 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2024-09-11 19:38:23,681 INFO L399 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:23,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:23,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2027422462, now seen corresponding path program 120 times [2024-09-11 19:38:23,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:23,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251399065] [2024-09-11 19:38:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:23,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-11 19:38:23,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:23,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251399065] [2024-09-11 19:38:23,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251399065] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:23,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330564644] [2024-09-11 19:38:23,894 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:38:23,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:23,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:23,895 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:23,896 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2024-09-11 19:38:23,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-11 19:38:23,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:38:23,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-11 19:38:23,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-11 19:38:24,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-11 19:38:24,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330564644] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:24,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:24,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2024-09-11 19:38:24,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919612734] [2024-09-11 19:38:24,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:24,724 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-11 19:38:24,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-11 19:38:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1766, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:38:24,724 INFO L87 Difference]: Start difference. First operand 1199 states and 1319 transitions. Second operand has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 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 19:38:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:25,858 INFO L93 Difference]: Finished difference Result 1386 states and 1534 transitions. [2024-09-11 19:38:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:38:25,859 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 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) Word has length 47 [2024-09-11 19:38:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:25,861 INFO L225 Difference]: With dead ends: 1386 [2024-09-11 19:38:25,861 INFO L226 Difference]: Without dead ends: 1307 [2024-09-11 19:38:25,862 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=371, Invalid=2935, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 19:38:25,862 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:25,862 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 367 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:38:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2024-09-11 19:38:26,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2024-09-11 19:38:26,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1306 states have (on average 1.0918836140888208) internal successors, (1426), 1306 states have internal predecessors, (1426), 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 19:38:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1426 transitions. [2024-09-11 19:38:26,533 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1426 transitions. Word has length 47 [2024-09-11 19:38:26,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:26,533 INFO L474 AbstractCegarLoop]: Abstraction has 1307 states and 1426 transitions. [2024-09-11 19:38:26,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 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 19:38:26,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1426 transitions. [2024-09-11 19:38:26,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:38:26,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:26,535 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:26,546 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2024-09-11 19:38:26,735 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:26,735 INFO L399 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:26,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1528082759, now seen corresponding path program 121 times [2024-09-11 19:38:26,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:26,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389407728] [2024-09-11 19:38:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:26,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-11 19:38:27,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:27,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389407728] [2024-09-11 19:38:27,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389407728] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:27,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405559397] [2024-09-11 19:38:27,062 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:38:27,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:27,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:27,063 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:27,064 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2024-09-11 19:38:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:27,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:38:27,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-11 19:38:27,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-11 19:38:27,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405559397] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:27,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:27,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 47 [2024-09-11 19:38:27,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851442962] [2024-09-11 19:38:27,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:27,763 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-11 19:38:27,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:27,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-11 19:38:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 19:38:27,764 INFO L87 Difference]: Start difference. First operand 1307 states and 1426 transitions. Second operand has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 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 19:38:28,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:28,865 INFO L93 Difference]: Finished difference Result 1349 states and 1472 transitions. [2024-09-11 19:38:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 19:38:28,865 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 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 47 [2024-09-11 19:38:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:28,868 INFO L225 Difference]: With dead ends: 1349 [2024-09-11 19:38:28,868 INFO L226 Difference]: Without dead ends: 1314 [2024-09-11 19:38:28,869 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=3214, Unknown=0, NotChecked=0, Total=3422 [2024-09-11 19:38:28,869 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:28,869 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 486 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:38:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2024-09-11 19:38:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1301. [2024-09-11 19:38:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.093076923076923) internal successors, (1421), 1300 states have internal predecessors, (1421), 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 19:38:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1421 transitions. [2024-09-11 19:38:29,533 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1421 transitions. Word has length 47 [2024-09-11 19:38:29,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:29,533 INFO L474 AbstractCegarLoop]: Abstraction has 1301 states and 1421 transitions. [2024-09-11 19:38:29,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 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 19:38:29,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:29,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1421 transitions. [2024-09-11 19:38:29,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:38:29,535 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:29,535 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:29,547 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2024-09-11 19:38:29,735 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:29,735 INFO L399 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:29,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:29,736 INFO L85 PathProgramCache]: Analyzing trace with hash 670379102, now seen corresponding path program 122 times [2024-09-11 19:38:29,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:29,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295697053] [2024-09-11 19:38:29,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:29,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-09-11 19:38:30,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:30,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295697053] [2024-09-11 19:38:30,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295697053] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:30,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669989460] [2024-09-11 19:38:30,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:38:30,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:30,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:30,023 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:30,024 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2024-09-11 19:38:30,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:38:30,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:38:30,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-11 19:38:30,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-11 19:38:30,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-11 19:38:30,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669989460] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:30,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:30,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 46 [2024-09-11 19:38:30,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775331690] [2024-09-11 19:38:30,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:30,899 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-11 19:38:30,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:30,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-11 19:38:30,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1920, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:38:30,899 INFO L87 Difference]: Start difference. First operand 1301 states and 1421 transitions. Second operand has 46 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 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 19:38:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:32,264 INFO L93 Difference]: Finished difference Result 1344 states and 1464 transitions. [2024-09-11 19:38:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-11 19:38:32,264 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 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) Word has length 47 [2024-09-11 19:38:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:32,267 INFO L225 Difference]: With dead ends: 1344 [2024-09-11 19:38:32,267 INFO L226 Difference]: Without dead ends: 1301 [2024-09-11 19:38:32,268 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 61 SyntacticMatches, 8 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=264, Invalid=3158, Unknown=0, NotChecked=0, Total=3422 [2024-09-11 19:38:32,268 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:32,268 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 462 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:38:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2024-09-11 19:38:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1301. [2024-09-11 19:38:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.0823076923076924) internal successors, (1407), 1300 states have internal predecessors, (1407), 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 19:38:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1407 transitions. [2024-09-11 19:38:32,951 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1407 transitions. Word has length 47 [2024-09-11 19:38:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:32,951 INFO L474 AbstractCegarLoop]: Abstraction has 1301 states and 1407 transitions. [2024-09-11 19:38:32,951 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 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 19:38:32,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1407 transitions. [2024-09-11 19:38:32,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-11 19:38:32,952 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:32,952 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:32,965 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2024-09-11 19:38:33,152 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:33,153 INFO L399 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:33,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:33,153 INFO L85 PathProgramCache]: Analyzing trace with hash 795995245, now seen corresponding path program 123 times [2024-09-11 19:38:33,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:33,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122337415] [2024-09-11 19:38:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:33,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:38:33,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:33,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122337415] [2024-09-11 19:38:33,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122337415] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:33,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194768443] [2024-09-11 19:38:33,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:38:33,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:33,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:33,735 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:33,736 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2024-09-11 19:38:33,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-11 19:38:33,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:38:33,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-11 19:38:33,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:38:35,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:38:36,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194768443] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:36,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:36,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 79 [2024-09-11 19:38:36,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137122156] [2024-09-11 19:38:36,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:36,246 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-11 19:38:36,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:36,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-11 19:38:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=5943, Unknown=0, NotChecked=0, Total=6162 [2024-09-11 19:38:36,248 INFO L87 Difference]: Start difference. First operand 1301 states and 1407 transitions. Second operand has 79 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 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 19:38:39,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:39,687 INFO L93 Difference]: Finished difference Result 1948 states and 2078 transitions. [2024-09-11 19:38:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 19:38:39,688 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 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 48 [2024-09-11 19:38:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:39,691 INFO L225 Difference]: With dead ends: 1948 [2024-09-11 19:38:39,691 INFO L226 Difference]: Without dead ends: 1890 [2024-09-11 19:38:39,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 36 SyntacticMatches, 14 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1052, Invalid=10290, Unknown=0, NotChecked=0, Total=11342 [2024-09-11 19:38:39,692 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 60 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:39,692 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 659 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:38:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2024-09-11 19:38:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1405. [2024-09-11 19:38:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 1.081908831908832) internal successors, (1519), 1404 states have internal predecessors, (1519), 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 19:38:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 1519 transitions. [2024-09-11 19:38:40,464 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 1519 transitions. Word has length 48 [2024-09-11 19:38:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:40,464 INFO L474 AbstractCegarLoop]: Abstraction has 1405 states and 1519 transitions. [2024-09-11 19:38:40,464 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 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 19:38:40,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 1519 transitions. [2024-09-11 19:38:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-11 19:38:40,465 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:40,465 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:40,477 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2024-09-11 19:38:40,665 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,126 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:40,666 INFO L399 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:40,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:40,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1041278438, now seen corresponding path program 124 times [2024-09-11 19:38:40,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:40,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761104332] [2024-09-11 19:38:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:40,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:38:41,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:41,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761104332] [2024-09-11 19:38:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761104332] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564623542] [2024-09-11 19:38:41,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:38:41,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:41,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:41,264 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:41,265 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2024-09-11 19:38:41,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:38:41,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:38:41,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-11 19:38:41,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:38:42,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 19:38:43,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564623542] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:43,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:43,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 80 [2024-09-11 19:38:43,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419987405] [2024-09-11 19:38:43,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:43,746 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-11 19:38:43,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:43,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-11 19:38:43,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=6083, Unknown=0, NotChecked=0, Total=6320 [2024-09-11 19:38:43,747 INFO L87 Difference]: Start difference. First operand 1405 states and 1519 transitions. Second operand has 80 states, 80 states have (on average 1.3375) internal successors, (107), 80 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 19:38:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:47,002 INFO L93 Difference]: Finished difference Result 1442 states and 1564 transitions. [2024-09-11 19:38:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-11 19:38:47,002 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.3375) internal successors, (107), 80 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) Word has length 48 [2024-09-11 19:38:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:47,005 INFO L225 Difference]: With dead ends: 1442 [2024-09-11 19:38:47,005 INFO L226 Difference]: Without dead ends: 1413 [2024-09-11 19:38:47,005 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 35 SyntacticMatches, 15 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=568, Invalid=10774, Unknown=0, NotChecked=0, Total=11342 [2024-09-11 19:38:47,005 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:47,006 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 776 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-11 19:38:47,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2024-09-11 19:38:47,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1413. [2024-09-11 19:38:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1412 states have (on average 1.0814447592067988) internal successors, (1527), 1412 states have internal predecessors, (1527), 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 19:38:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1527 transitions. [2024-09-11 19:38:47,778 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1527 transitions. Word has length 48 [2024-09-11 19:38:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:38:47,778 INFO L474 AbstractCegarLoop]: Abstraction has 1413 states and 1527 transitions. [2024-09-11 19:38:47,778 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.3375) internal successors, (107), 80 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 19:38:47,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1527 transitions. [2024-09-11 19:38:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-11 19:38:47,779 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:38:47,779 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:38:47,792 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2024-09-11 19:38:47,980 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,127 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:47,980 INFO L399 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:38:47,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:38:47,980 INFO L85 PathProgramCache]: Analyzing trace with hash 193950094, now seen corresponding path program 125 times [2024-09-11 19:38:47,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:38:47,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319394396] [2024-09-11 19:38:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:38:47,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:38:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:38:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-09-11 19:38:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:38:48,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319394396] [2024-09-11 19:38:48,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319394396] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:38:48,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892755688] [2024-09-11 19:38:48,131 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:38:48,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:38:48,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:38:48,132 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:38:48,134 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2024-09-11 19:38:48,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-11 19:38:48,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:38:48,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:38:48,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:38:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-09-11 19:38:48,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:38:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-09-11 19:38:48,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892755688] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:38:48,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:38:48,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-09-11 19:38:48,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859597786] [2024-09-11 19:38:48,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:38:48,463 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-11 19:38:48,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:38:48,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-11 19:38:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=531, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:38:48,463 INFO L87 Difference]: Start difference. First operand 1413 states and 1527 transitions. Second operand has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 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 19:38:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:38:49,585 INFO L93 Difference]: Finished difference Result 1601 states and 1742 transitions. [2024-09-11 19:38:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-11 19:38:49,585 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 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) Word has length 48 [2024-09-11 19:38:49,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:38:49,588 INFO L225 Difference]: With dead ends: 1601 [2024-09-11 19:38:49,588 INFO L226 Difference]: Without dead ends: 1401 [2024-09-11 19:38:49,589 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 16 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1093, Invalid=2099, Unknown=0, NotChecked=0, Total=3192 [2024-09-11 19:38:49,589 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 76 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:38:49,589 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 233 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:38:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states.