./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/count_by_nondet.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-new/count_by_nondet.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3467a31f3cd19e731a18eaf7789079f202f3b29e437ef24ddd0458f09610424d --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 19:24:19,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:24:19,254 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:24:19,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:24:19,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:24:19,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:24:19,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:24:19,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:24:19,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:24:19,293 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:24:19,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:24:19,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:24:19,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:24:19,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:24:19,298 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:24:19,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:24:19,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:24:19,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:24:19,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:24:19,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:24:19,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:24:19,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:24:19,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:24:19,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:24:19,300 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:24:19,301 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:24:19,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:24:19,301 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:24:19,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:24:19,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:24:19,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:24:19,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:24:19,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:24:19,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:24:19,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:24:19,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:24:19,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:24:19,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:24:19,305 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:24:19,305 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:24:19,305 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:24:19,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:24:19,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3467a31f3cd19e731a18eaf7789079f202f3b29e437ef24ddd0458f09610424d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:24:19,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:24:19,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:24:19,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:24:19,599 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:24:19,599 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:24:19,600 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-new/count_by_nondet.i [2024-09-11 19:24:20,957 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:24:21,145 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:24:21,146 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-new/count_by_nondet.i [2024-09-11 19:24:21,152 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/8a2023e7a/96f5304bd320493aad187ef9e707c596/FLAGd6774e9db [2024-09-11 19:24:21,529 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/8a2023e7a/96f5304bd320493aad187ef9e707c596 [2024-09-11 19:24:21,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:24:21,533 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:24:21,534 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:24:21,534 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:24:21,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:24:21,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f356440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21, skipping insertion in model container [2024-09-11 19:24:21,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,562 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:24:21,700 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-new/count_by_nondet.i[891,904] [2024-09-11 19:24:21,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:24:21,719 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:24:21,731 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-new/count_by_nondet.i[891,904] [2024-09-11 19:24:21,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:24:21,748 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:24:21,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21 WrapperNode [2024-09-11 19:24:21,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:24:21,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:24:21,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:24:21,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:24:21,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,778 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2024-09-11 19:24:21,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:24:21,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:24:21,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:24:21,780 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:24:21,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,790 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,800 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 19:24:21,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,812 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:24:21,813 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:24:21,813 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:24:21,813 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:24:21,814 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (1/1) ... [2024-09-11 19:24:21,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:24:21,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:21,845 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 19:24:21,847 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 19:24:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:24:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:24:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:24:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:24:21,940 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:24:21,942 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:24:22,024 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-11 19:24:22,024 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:24:22,043 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:24:22,043 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-11 19:24:22,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:24:22 BoogieIcfgContainer [2024-09-11 19:24:22,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:24:22,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:24:22,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:24:22,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:24:22,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:24:21" (1/3) ... [2024-09-11 19:24:22,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ce374e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:24:22, skipping insertion in model container [2024-09-11 19:24:22,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:24:21" (2/3) ... [2024-09-11 19:24:22,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ce374e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:24:22, skipping insertion in model container [2024-09-11 19:24:22,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:24:22" (3/3) ... [2024-09-11 19:24:22,051 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i [2024-09-11 19:24:22,064 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:24:22,064 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:24:22,113 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:24:22,119 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4d7b5ce1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:24:22,120 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:24:22,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-11 19:24:22,129 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:22,129 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-11 19:24:22,130 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:22,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash 61508582, now seen corresponding path program 1 times [2024-09-11 19:24:22,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:22,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963698945] [2024-09-11 19:24:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:22,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:22,321 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 19:24:22,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:22,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963698945] [2024-09-11 19:24:22,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963698945] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:24:22,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:24:22,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:24:22,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239154227] [2024-09-11 19:24:22,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:24:22,330 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:24:22,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:22,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:24:22,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:24:22,355 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 19:24:22,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:22,375 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2024-09-11 19:24:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:24:22,377 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 19:24:22,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:22,384 INFO L225 Difference]: With dead ends: 17 [2024-09-11 19:24:22,384 INFO L226 Difference]: Without dead ends: 7 [2024-09-11 19:24:22,386 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:24:22,391 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:22,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:24:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2024-09-11 19:24:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2024-09-11 19:24:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2024-09-11 19:24:22,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2024-09-11 19:24:22,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:22,421 INFO L474 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2024-09-11 19:24:22,421 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 19:24:22,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2024-09-11 19:24:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-11 19:24:22,424 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:22,424 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-11 19:24:22,424 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:24:22,424 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:22,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:22,425 INFO L85 PathProgramCache]: Analyzing trace with hash 61240463, now seen corresponding path program 1 times [2024-09-11 19:24:22,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:22,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715897888] [2024-09-11 19:24:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:22,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:22,496 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 19:24:22,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715897888] [2024-09-11 19:24:22,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715897888] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:24:22,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:24:22,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:24:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995198007] [2024-09-11 19:24:22,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:24:22,498 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:24:22,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:22,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:24:22,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:24:22,501 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 19:24:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:22,521 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2024-09-11 19:24:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:24:22,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 19:24:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:22,524 INFO L225 Difference]: With dead ends: 13 [2024-09-11 19:24:22,528 INFO L226 Difference]: Without dead ends: 9 [2024-09-11 19:24:22,529 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 19:24:22,530 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:22,530 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:24:22,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-09-11 19:24:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2024-09-11 19:24:22,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-09-11 19:24:22,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2024-09-11 19:24:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:22,538 INFO L474 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-09-11 19:24:22,538 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 19:24:22,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-09-11 19:24:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-11 19:24:22,540 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:22,540 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:24:22,540 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:24:22,540 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:22,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:22,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1224314124, now seen corresponding path program 1 times [2024-09-11 19:24:22,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:22,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66906586] [2024-09-11 19:24:22,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:22,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:22,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:22,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66906586] [2024-09-11 19:24:22,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66906586] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:22,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744029327] [2024-09-11 19:24:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:22,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:22,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:22,639 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 19:24:22,640 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 19:24:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:22,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:24:22,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:22,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:22,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744029327] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:22,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:22,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-09-11 19:24:22,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187080884] [2024-09-11 19:24:22,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:22,791 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:24:22,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:22,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:24:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:24:22,792 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:22,818 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2024-09-11 19:24:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:24:22,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 7 [2024-09-11 19:24:22,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:22,819 INFO L225 Difference]: With dead ends: 14 [2024-09-11 19:24:22,819 INFO L226 Difference]: Without dead ends: 10 [2024-09-11 19:24:22,819 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:24:22,820 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:22,821 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:24:22,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-09-11 19:24:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-09-11 19:24:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2024-09-11 19:24:22,825 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2024-09-11 19:24:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:22,826 INFO L474 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-09-11 19:24:22,826 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:22,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2024-09-11 19:24:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-11 19:24:22,827 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:22,827 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-09-11 19:24:22,844 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 19:24:23,028 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:23,028 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:23,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:23,030 INFO L85 PathProgramCache]: Analyzing trace with hash 308309017, now seen corresponding path program 2 times [2024-09-11 19:24:23,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:23,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823834606] [2024-09-11 19:24:23,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:23,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:23,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:23,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823834606] [2024-09-11 19:24:23,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823834606] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267736333] [2024-09-11 19:24:23,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:24:23,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:23,204 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 19:24:23,205 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 19:24:23,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:24:23,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:23,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 19:24:23,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:23,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:23,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267736333] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:23,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:23,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-11 19:24:23,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268200335] [2024-09-11 19:24:23,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:23,354 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:24:23,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:23,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:24:23,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:24:23,355 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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 19:24:23,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:23,390 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-09-11 19:24:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 19:24:23,391 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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) Word has length 9 [2024-09-11 19:24:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:23,391 INFO L225 Difference]: With dead ends: 26 [2024-09-11 19:24:23,391 INFO L226 Difference]: Without dead ends: 19 [2024-09-11 19:24:23,392 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:24:23,393 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:23,393 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:24:23,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-11 19:24:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2024-09-11 19:24:23,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 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 19:24:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-09-11 19:24:23,404 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2024-09-11 19:24:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:23,404 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-09-11 19:24:23,404 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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 19:24:23,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-09-11 19:24:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-11 19:24:23,405 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:23,405 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1] [2024-09-11 19:24:23,417 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:23,607 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:23,607 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:23,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:23,608 INFO L85 PathProgramCache]: Analyzing trace with hash -157918163, now seen corresponding path program 3 times [2024-09-11 19:24:23,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:23,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578037987] [2024-09-11 19:24:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:23,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:23,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:23,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578037987] [2024-09-11 19:24:23,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578037987] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:23,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731970952] [2024-09-11 19:24:23,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:24:23,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:23,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:23,889 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 19:24:23,891 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 19:24:23,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-11 19:24:23,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:23,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-11 19:24:23,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:24,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:24,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731970952] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:24,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:24,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-09-11 19:24:24,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469684895] [2024-09-11 19:24:24,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:24,186 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 19:24:24,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:24,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 19:24:24,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:24:24,188 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 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 19:24:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:24,238 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2024-09-11 19:24:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:24:24,238 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 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) Word has length 17 [2024-09-11 19:24:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:24,240 INFO L225 Difference]: With dead ends: 46 [2024-09-11 19:24:24,240 INFO L226 Difference]: Without dead ends: 35 [2024-09-11 19:24:24,241 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:24:24,242 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:24,244 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 37 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:24:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-11 19:24:24,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-09-11 19:24:24,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 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 19:24:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2024-09-11 19:24:24,253 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 17 [2024-09-11 19:24:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:24,253 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2024-09-11 19:24:24,253 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 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 19:24:24,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2024-09-11 19:24:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-11 19:24:24,255 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:24,255 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1] [2024-09-11 19:24:24,270 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 19:24:24,459 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:24,460 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:24,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash -87015339, now seen corresponding path program 4 times [2024-09-11 19:24:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110003282] [2024-09-11 19:24:24,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:24,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:24,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:24,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110003282] [2024-09-11 19:24:24,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110003282] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948647089] [2024-09-11 19:24:24,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:24:24,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:24,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:24,826 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 19:24:24,827 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 19:24:24,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:24:24,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:24,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:24:24,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:24,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:25,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948647089] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:25,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:25,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-09-11 19:24:25,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599780777] [2024-09-11 19:24:25,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:25,438 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-11 19:24:25,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:25,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-11 19:24:25,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=657, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 19:24:25,440 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 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 19:24:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:25,516 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2024-09-11 19:24:25,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 19:24:25,517 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 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 33 [2024-09-11 19:24:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:25,519 INFO L225 Difference]: With dead ends: 86 [2024-09-11 19:24:25,519 INFO L226 Difference]: Without dead ends: 67 [2024-09-11 19:24:25,520 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=533, Invalid=657, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 19:24:25,521 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 40 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:25,521 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 63 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:24:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-11 19:24:25,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-09-11 19:24:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 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 19:24:25,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2024-09-11 19:24:25,533 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 33 [2024-09-11 19:24:25,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:25,533 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2024-09-11 19:24:25,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 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 19:24:25,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2024-09-11 19:24:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-11 19:24:25,535 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:25,535 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1] [2024-09-11 19:24:25,552 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 19:24:25,739 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:25,740 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:25,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:25,740 INFO L85 PathProgramCache]: Analyzing trace with hash -22275931, now seen corresponding path program 5 times [2024-09-11 19:24:25,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:25,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722362434] [2024-09-11 19:24:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:26,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722362434] [2024-09-11 19:24:26,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722362434] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244339741] [2024-09-11 19:24:26,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:24:26,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:26,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:26,719 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 19:24:26,721 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 19:24:26,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-11 19:24:26,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:26,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 19:24:26,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:26,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:28,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244339741] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:28,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:28,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2024-09-11 19:24:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619053585] [2024-09-11 19:24:28,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:28,249 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-11 19:24:28,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:28,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-11 19:24:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2085, Invalid=2337, Unknown=0, NotChecked=0, Total=4422 [2024-09-11 19:24:28,253 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 67 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 66 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:28,388 INFO L93 Difference]: Finished difference Result 166 states and 197 transitions. [2024-09-11 19:24:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-11 19:24:28,389 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 66 states have internal predecessors, (133), 0 states have call successors, (0), 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 65 [2024-09-11 19:24:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:28,390 INFO L225 Difference]: With dead ends: 166 [2024-09-11 19:24:28,391 INFO L226 Difference]: Without dead ends: 131 [2024-09-11 19:24:28,392 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2085, Invalid=2337, Unknown=0, NotChecked=0, Total=4422 [2024-09-11 19:24:28,393 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 109 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:28,393 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 119 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:24:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-11 19:24:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2024-09-11 19:24:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0077519379844961) internal successors, (130), 129 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2024-09-11 19:24:28,417 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 65 [2024-09-11 19:24:28,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:28,418 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2024-09-11 19:24:28,418 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 66 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:28,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2024-09-11 19:24:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-09-11 19:24:28,422 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:28,422 INFO L216 NwaCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1] [2024-09-11 19:24:28,438 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 19:24:28,626 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-11 19:24:28,627 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:28,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:28,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1249638075, now seen corresponding path program 6 times [2024-09-11 19:24:28,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:28,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529060259] [2024-09-11 19:24:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:28,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:31,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:31,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529060259] [2024-09-11 19:24:31,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529060259] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:31,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417971719] [2024-09-11 19:24:31,472 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:24:31,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:31,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:31,474 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 19:24:31,476 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 19:24:31,647 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2024-09-11 19:24:31,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:31,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-11 19:24:31,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:31,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:35,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417971719] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:35,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:35,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2024-09-11 19:24:35,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721993775] [2024-09-11 19:24:35,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:35,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-11 19:24:35,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-11 19:24:35,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8261, Invalid=8769, Unknown=0, NotChecked=0, Total=17030 [2024-09-11 19:24:35,992 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand has 131 states, 131 states have (on average 1.9923664122137406) internal successors, (261), 130 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:36,336 INFO L93 Difference]: Finished difference Result 326 states and 389 transitions. [2024-09-11 19:24:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2024-09-11 19:24:36,337 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.9923664122137406) internal successors, (261), 130 states have internal predecessors, (261), 0 states have call successors, (0), 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 129 [2024-09-11 19:24:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:36,339 INFO L225 Difference]: With dead ends: 326 [2024-09-11 19:24:36,339 INFO L226 Difference]: Without dead ends: 259 [2024-09-11 19:24:36,343 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8261, Invalid=8769, Unknown=0, NotChecked=0, Total=17030 [2024-09-11 19:24:36,343 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 200 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:36,344 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 219 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:24:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-11 19:24:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2024-09-11 19:24:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.0038910505836576) internal successors, (258), 257 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2024-09-11 19:24:36,371 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 129 [2024-09-11 19:24:36,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:36,372 INFO L474 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2024-09-11 19:24:36,372 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.9923664122137406) internal successors, (261), 130 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:24:36,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:36,372 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2024-09-11 19:24:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-09-11 19:24:36,377 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:36,377 INFO L216 NwaCegarLoop]: trace histogram [126, 126, 1, 1, 1, 1, 1] [2024-09-11 19:24:36,394 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 19:24:36,578 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:36,578 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:36,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:36,579 INFO L85 PathProgramCache]: Analyzing trace with hash -340465019, now seen corresponding path program 7 times [2024-09-11 19:24:36,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:36,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318658330] [2024-09-11 19:24:36,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:36,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 15876 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:45,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:45,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318658330] [2024-09-11 19:24:45,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318658330] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:45,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648277122] [2024-09-11 19:24:45,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:24:45,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:45,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:45,303 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 19:24:45,304 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 19:24:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:45,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-09-11 19:24:45,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 15876 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:45,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 15876 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:01,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648277122] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:01,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:01,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 258 [2024-09-11 19:25:01,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400052648] [2024-09-11 19:25:01,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:01,597 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 259 states [2024-09-11 19:25:01,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:01,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 259 interpolants. [2024-09-11 19:25:01,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32901, Invalid=33921, Unknown=0, NotChecked=0, Total=66822 [2024-09-11 19:25:01,612 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand has 259 states, 259 states have (on average 1.9961389961389961) internal successors, (517), 258 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 19:25:03,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:03,214 INFO L93 Difference]: Finished difference Result 646 states and 773 transitions. [2024-09-11 19:25:03,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2024-09-11 19:25:03,214 INFO L78 Accepts]: Start accepts. Automaton has has 259 states, 259 states have (on average 1.9961389961389961) internal successors, (517), 258 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) Word has length 257 [2024-09-11 19:25:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:03,217 INFO L225 Difference]: With dead ends: 646 [2024-09-11 19:25:03,217 INFO L226 Difference]: Without dead ends: 515 [2024-09-11 19:25:03,221 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=32901, Invalid=33921, Unknown=0, NotChecked=0, Total=66822 [2024-09-11 19:25:03,222 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 585 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:03,222 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 405 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:25:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-09-11 19:25:03,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 514. [2024-09-11 19:25:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 1.0019493177387915) internal successors, (514), 513 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:25:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 514 transitions. [2024-09-11 19:25:03,262 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 514 transitions. Word has length 257 [2024-09-11 19:25:03,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:03,263 INFO L474 AbstractCegarLoop]: Abstraction has 514 states and 514 transitions. [2024-09-11 19:25:03,263 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 259 states, 259 states have (on average 1.9961389961389961) internal successors, (517), 258 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 19:25:03,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:03,264 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 514 transitions. [2024-09-11 19:25:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-09-11 19:25:03,272 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:03,272 INFO L216 NwaCegarLoop]: trace histogram [254, 254, 1, 1, 1, 1, 1] [2024-09-11 19:25:03,291 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 19:25:03,473 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:03,473 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:03,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash -635785979, now seen corresponding path program 8 times [2024-09-11 19:25:03,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:03,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103412279] [2024-09-11 19:25:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:03,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 64516 backedges. 0 proven. 64516 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:36,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:36,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103412279] [2024-09-11 19:25:36,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103412279] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:36,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111136836] [2024-09-11 19:25:36,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:25:36,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:36,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:36,539 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 19:25:36,540 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 19:25:36,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:25:36,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:36,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 2315 conjuncts, 258 conjuncts are in the unsatisfiable core [2024-09-11 19:25:36,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 64516 backedges. 0 proven. 64516 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:37,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:26:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 64516 backedges. 0 proven. 64516 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:40,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111136836] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:26:40,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:26:40,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [257, 257, 257] total 514 [2024-09-11 19:26:40,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575034763] [2024-09-11 19:26:40,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:26:40,244 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 515 states [2024-09-11 19:26:40,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:26:40,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 515 interpolants. [2024-09-11 19:26:40,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131333, Invalid=133377, Unknown=0, NotChecked=0, Total=264710 [2024-09-11 19:26:40,288 INFO L87 Difference]: Start difference. First operand 514 states and 514 transitions. Second operand has 515 states, 515 states have (on average 1.9980582524271844) internal successors, (1029), 514 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:26:56,753 INFO L93 Difference]: Finished difference Result 1286 states and 1541 transitions. [2024-09-11 19:26:56,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 513 states. [2024-09-11 19:26:56,754 INFO L78 Accepts]: Start accepts. Automaton has has 515 states, 515 states have (on average 1.9980582524271844) internal successors, (1029), 514 states have internal predecessors, (1029), 0 states have call successors, (0), 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 513 [2024-09-11 19:26:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:26:56,758 INFO L225 Difference]: With dead ends: 1286 [2024-09-11 19:26:56,758 INFO L226 Difference]: Without dead ends: 1027 [2024-09-11 19:26:56,767 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1281 GetRequests, 767 SyntacticMatches, 1 SemanticMatches, 513 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 82.5s TimeCoverageRelationStatistics Valid=131333, Invalid=133377, Unknown=0, NotChecked=0, Total=264710 [2024-09-11 19:26:56,768 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 1075 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:26:56,768 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 795 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:26:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2024-09-11 19:26:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1026. [2024-09-11 19:26:56,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1025 states have (on average 1.0009756097560976) internal successors, (1026), 1025 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1026 transitions. [2024-09-11 19:26:56,826 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1026 transitions. Word has length 513 [2024-09-11 19:26:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:26:56,827 INFO L474 AbstractCegarLoop]: Abstraction has 1026 states and 1026 transitions. [2024-09-11 19:26:56,829 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 515 states, 515 states have (on average 1.9980582524271844) internal successors, (1029), 514 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:26:56,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:56,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1026 transitions. [2024-09-11 19:26:56,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2024-09-11 19:26:56,858 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:56,858 INFO L216 NwaCegarLoop]: trace histogram [510, 510, 1, 1, 1, 1, 1] [2024-09-11 19:26:56,880 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-11 19:26:57,059 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:57,059 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:57,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1091161595, now seen corresponding path program 9 times [2024-09-11 19:26:57,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:57,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129747358] [2024-09-11 19:26:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:57,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat