./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_1.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/mono-crafted_1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 00e8f12f1d0e3d2fc679744754ceeef2daa37b874cd8db07b5ab8c35684165c0 --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 19:28:52,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:28:52,218 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:28:52,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:28:52,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:28:52,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:28:52,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:28:52,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:28:52,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:28:52,258 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:28:52,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:28:52,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:28:52,260 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:28:52,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:28:52,262 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:28:52,262 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:28:52,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:28:52,266 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:28:52,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:28:52,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:28:52,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:28:52,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:28:52,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:28:52,268 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:28:52,268 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:28:52,268 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:28:52,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:28:52,269 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:28:52,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:28:52,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:28:52,269 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:28:52,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:28:52,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:28:52,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:28:52,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:28:52,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:28:52,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:28:52,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:28:52,273 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:28:52,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:28:52,274 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:28:52,274 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:28:52,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00e8f12f1d0e3d2fc679744754ceeef2daa37b874cd8db07b5ab8c35684165c0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:28:52,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:28:52,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:28:52,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:28:52,551 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:28:52,552 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:28:52,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/mono-crafted_1.c [2024-09-11 19:28:53,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:28:54,109 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:28:54,109 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/mono-crafted_1.c [2024-09-11 19:28:54,115 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/af5772053/30673e5055f44c77b98994778451c955/FLAGa3ebe1b82 [2024-09-11 19:28:54,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/af5772053/30673e5055f44c77b98994778451c955 [2024-09-11 19:28:54,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:28:54,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:28:54,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:28:54,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:28:54,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:28:54,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ddb41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54, skipping insertion in model container [2024-09-11 19:28:54,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,544 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:28:54,679 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/mono-crafted_1.c[318,331] [2024-09-11 19:28:54,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:28:54,699 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:28:54,710 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/mono-crafted_1.c[318,331] [2024-09-11 19:28:54,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:28:54,730 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:28:54,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54 WrapperNode [2024-09-11 19:28:54,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:28:54,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:28:54,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:28:54,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:28:54,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,766 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2024-09-11 19:28:54,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:28:54,767 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:28:54,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:28:54,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:28:54,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,780 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,790 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 19:28:54,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:28:54,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:28:54,806 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:28:54,806 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:28:54,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (1/1) ... [2024-09-11 19:28:54,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:28:54,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:54,845 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 19:28:54,879 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 19:28:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:28:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:28:54,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:28:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:28:55,004 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:28:55,005 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:28:55,096 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-11 19:28:55,097 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:28:55,115 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:28:55,115 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-11 19:28:55,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:28:55 BoogieIcfgContainer [2024-09-11 19:28:55,116 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:28:55,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:28:55,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:28:55,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:28:55,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:28:54" (1/3) ... [2024-09-11 19:28:55,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ef2bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:28:55, skipping insertion in model container [2024-09-11 19:28:55,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:28:54" (2/3) ... [2024-09-11 19:28:55,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ef2bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:28:55, skipping insertion in model container [2024-09-11 19:28:55,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:28:55" (3/3) ... [2024-09-11 19:28:55,122 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_1.c [2024-09-11 19:28:55,135 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:28:55,135 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:28:55,181 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:28:55,187 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;@cac837f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:28:55,187 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:28:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-11 19:28:55,196 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:55,197 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-11 19:28:55,197 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:55,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:55,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2043540179, now seen corresponding path program 1 times [2024-09-11 19:28:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:55,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136413559] [2024-09-11 19:28:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:55,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:55,330 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 19:28:55,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:55,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136413559] [2024-09-11 19:28:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136413559] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:28:55,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:28:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:28:55,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722436377] [2024-09-11 19:28:55,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:28:55,338 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:28:55,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:28:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:28:55,358 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:55,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:55,373 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2024-09-11 19:28:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:28:55,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-09-11 19:28:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:55,380 INFO L225 Difference]: With dead ends: 17 [2024-09-11 19:28:55,380 INFO L226 Difference]: Without dead ends: 8 [2024-09-11 19:28:55,382 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 19:28:55,385 INFO L434 NwaCegarLoop]: 10 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, 10 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 19:28:55,386 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:28:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-09-11 19:28:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-09-11 19:28:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 19:28:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2024-09-11 19:28:55,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2024-09-11 19:28:55,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:55,408 INFO L474 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2024-09-11 19:28:55,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:55,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:55,409 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2024-09-11 19:28:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-11 19:28:55,410 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:55,410 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-11 19:28:55,410 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:28:55,410 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:55,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2052775389, now seen corresponding path program 1 times [2024-09-11 19:28:55,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:55,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850780720] [2024-09-11 19:28:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:55,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:55,488 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 19:28:55,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:55,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850780720] [2024-09-11 19:28:55,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850780720] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:28:55,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:28:55,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:28:55,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108840081] [2024-09-11 19:28:55,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:28:55,490 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:28:55,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:28:55,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:28:55,494 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:55,519 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2024-09-11 19:28:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:28:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-09-11 19:28:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:55,521 INFO L225 Difference]: With dead ends: 17 [2024-09-11 19:28:55,522 INFO L226 Difference]: Without dead ends: 10 [2024-09-11 19:28:55,523 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:28:55,524 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:55,525 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:28:55,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-09-11 19:28:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-09-11 19:28:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2024-09-11 19:28:55,529 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2024-09-11 19:28:55,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:55,529 INFO L474 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-09-11 19:28:55,530 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:55,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:55,530 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2024-09-11 19:28:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-11 19:28:55,531 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:55,531 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:55,535 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:28:55,535 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:55,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash 82784800, now seen corresponding path program 1 times [2024-09-11 19:28:55,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:55,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371595626] [2024-09-11 19:28:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:55,650 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 19:28:55,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:55,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371595626] [2024-09-11 19:28:55,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371595626] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:55,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511041994] [2024-09-11 19:28:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:55,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:55,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:55,654 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 19:28:55,655 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 19:28:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:55,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:28:55,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:55,751 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 19:28:55,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:55,781 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 19:28:55,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511041994] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:55,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:55,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-11 19:28:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092334593] [2024-09-11 19:28:55,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:55,782 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-11 19:28:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-11 19:28:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:28:55,784 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:55,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:55,828 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2024-09-11 19:28:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:28:55,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-11 19:28:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:55,829 INFO L225 Difference]: With dead ends: 22 [2024-09-11 19:28:55,829 INFO L226 Difference]: Without dead ends: 15 [2024-09-11 19:28:55,829 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:28:55,833 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:55,833 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:28:55,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-09-11 19:28:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-09-11 19:28:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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 19:28:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-09-11 19:28:55,838 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2024-09-11 19:28:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:55,838 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-09-11 19:28:55,838 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:55,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-09-11 19:28:55,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-11 19:28:55,840 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:55,840 INFO L216 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:55,857 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 19:28:56,044 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 19:28:56,045 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:56,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:56,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2105829779, now seen corresponding path program 1 times [2024-09-11 19:28:56,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:56,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690754079] [2024-09-11 19:28:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:56,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:28:56,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:56,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690754079] [2024-09-11 19:28:56,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690754079] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:56,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229280962] [2024-09-11 19:28:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:56,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:56,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:56,191 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 19:28:56,193 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 19:28:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:56,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 19:28:56,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:28:56,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:28:56,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229280962] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:56,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:56,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-09-11 19:28:56,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908815347] [2024-09-11 19:28:56,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:56,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:28:56,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:56,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:28:56,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:28:56,335 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:56,382 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-09-11 19:28:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:28:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-09-11 19:28:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:56,385 INFO L225 Difference]: With dead ends: 33 [2024-09-11 19:28:56,385 INFO L226 Difference]: Without dead ends: 23 [2024-09-11 19:28:56,386 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:28:56,387 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 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 19:28:56,387 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:28:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-11 19:28:56,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-11 19:28:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:56,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-11 19:28:56,397 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2024-09-11 19:28:56,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:56,397 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-11 19:28:56,397 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:56,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-11 19:28:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-11 19:28:56,398 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:56,398 INFO L216 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:56,411 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 19:28:56,599 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 19:28:56,599 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:56,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:56,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2017325575, now seen corresponding path program 2 times [2024-09-11 19:28:56,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:56,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532022892] [2024-09-11 19:28:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:56,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:28:56,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:56,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532022892] [2024-09-11 19:28:56,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532022892] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:56,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286071567] [2024-09-11 19:28:56,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:28:56,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:56,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:56,842 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 19:28:56,844 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 19:28:56,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:28:56,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:56,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:28:56,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:28:56,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:28:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286071567] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:57,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:57,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-09-11 19:28:57,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116232133] [2024-09-11 19:28:57,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:57,099 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-11 19:28:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:57,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-11 19:28:57,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:28:57,101 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:57,168 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-09-11 19:28:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-11 19:28:57,170 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-09-11 19:28:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:57,171 INFO L225 Difference]: With dead ends: 49 [2024-09-11 19:28:57,171 INFO L226 Difference]: Without dead ends: 39 [2024-09-11 19:28:57,171 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:28:57,172 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:57,172 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:28:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-11 19:28:57,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-11 19:28:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:57,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-09-11 19:28:57,182 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 22 [2024-09-11 19:28:57,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:57,183 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-09-11 19:28:57,183 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:57,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:57,183 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-09-11 19:28:57,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-11 19:28:57,184 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:57,184 INFO L216 NwaCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:57,197 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 19:28:57,385 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 19:28:57,385 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:57,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1737746159, now seen corresponding path program 3 times [2024-09-11 19:28:57,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:57,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988335185] [2024-09-11 19:28:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:57,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:28:57,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:57,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988335185] [2024-09-11 19:28:57,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988335185] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:57,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383262388] [2024-09-11 19:28:57,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:28:57,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:57,796 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 19:28:57,797 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 19:28:57,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:28:57,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:57,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-11 19:28:57,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-09-11 19:28:58,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:28:58,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383262388] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:28:58,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 19:28:58,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 19 [2024-09-11 19:28:58,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797537483] [2024-09-11 19:28:58,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:28:58,037 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:28:58,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:58,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:28:58,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:28:58,038 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:58,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:58,071 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-09-11 19:28:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:28:58,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-09-11 19:28:58,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:58,072 INFO L225 Difference]: With dead ends: 52 [2024-09-11 19:28:58,073 INFO L226 Difference]: Without dead ends: 48 [2024-09-11 19:28:58,074 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:28:58,075 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:58,075 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 17 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:28:58,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-11 19:28:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2024-09-11 19:28:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2024-09-11 19:28:58,090 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 38 [2024-09-11 19:28:58,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:58,091 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2024-09-11 19:28:58,091 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:58,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2024-09-11 19:28:58,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-11 19:28:58,094 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:58,094 INFO L216 NwaCegarLoop]: trace histogram [16, 14, 3, 2, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:58,108 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 19:28:58,294 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 19:28:58,295 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:58,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:58,295 INFO L85 PathProgramCache]: Analyzing trace with hash -686232931, now seen corresponding path program 1 times [2024-09-11 19:28:58,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:58,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091264846] [2024-09-11 19:28:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:58,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:28:58,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:58,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091264846] [2024-09-11 19:28:58,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091264846] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:58,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172566826] [2024-09-11 19:28:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:58,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:58,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:58,628 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 19:28:58,631 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 19:28:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:58,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 19:28:58,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:28:58,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:28:59,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172566826] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:59,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:59,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2024-09-11 19:28:59,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3110781] [2024-09-11 19:28:59,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:59,184 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-11 19:28:59,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-11 19:28:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:28:59,186 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:59,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:59,303 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2024-09-11 19:28:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-11 19:28:59,303 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-09-11 19:28:59,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:59,304 INFO L225 Difference]: With dead ends: 87 [2024-09-11 19:28:59,305 INFO L226 Difference]: Without dead ends: 74 [2024-09-11 19:28:59,306 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:28:59,307 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:59,308 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:28:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-11 19:28:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-09-11 19:28:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-09-11 19:28:59,323 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 41 [2024-09-11 19:28:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:59,323 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-09-11 19:28:59,323 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:28:59,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-09-11 19:28:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-11 19:28:59,325 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:59,326 INFO L216 NwaCegarLoop]: trace histogram [32, 30, 3, 2, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:59,342 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 19:28:59,529 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 19:28:59,530 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:59,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash -466526515, now seen corresponding path program 2 times [2024-09-11 19:28:59,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:59,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718752235] [2024-09-11 19:28:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:59,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:29:00,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:00,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718752235] [2024-09-11 19:29:00,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718752235] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:00,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725656888] [2024-09-11 19:29:00,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:29:00,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:00,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:00,830 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 19:29:00,831 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 19:29:00,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:29:00,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:00,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-11 19:29:00,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:29:01,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:29:02,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725656888] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:02,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:02,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 64 [2024-09-11 19:29:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650964929] [2024-09-11 19:29:02,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:02,391 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-11 19:29:02,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-11 19:29:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-09-11 19:29:02,395 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 64 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:02,627 INFO L93 Difference]: Finished difference Result 151 states and 189 transitions. [2024-09-11 19:29:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-11 19:29:02,628 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 64 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-09-11 19:29:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:02,629 INFO L225 Difference]: With dead ends: 151 [2024-09-11 19:29:02,629 INFO L226 Difference]: Without dead ends: 138 [2024-09-11 19:29:02,631 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-09-11 19:29:02,635 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:02,635 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:29:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-09-11 19:29:02,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-09-11 19:29:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 137 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2024-09-11 19:29:02,670 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 73 [2024-09-11 19:29:02,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:02,671 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions. [2024-09-11 19:29:02,672 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 64 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:02,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:02,673 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions. [2024-09-11 19:29:02,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-11 19:29:02,675 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:02,675 INFO L216 NwaCegarLoop]: trace histogram [64, 62, 3, 2, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:02,692 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-11 19:29:02,879 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 19:29:02,880 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:02,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1907620051, now seen corresponding path program 3 times [2024-09-11 19:29:02,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:02,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090324672] [2024-09-11 19:29:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:02,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4102 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:29:06,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:06,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090324672] [2024-09-11 19:29:06,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090324672] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:06,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771628583] [2024-09-11 19:29:06,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:29:06,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:06,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:06,249 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 19:29:06,251 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 19:29:06,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:29:06,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:06,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:29:06,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4102 backedges. 190 proven. 6 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2024-09-11 19:29:06,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4102 backedges. 190 proven. 6 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2024-09-11 19:29:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771628583] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:07,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:07,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 5, 5] total 72 [2024-09-11 19:29:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303713567] [2024-09-11 19:29:07,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:07,158 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-11 19:29:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:07,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-11 19:29:07,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2124, Invalid=3132, Unknown=0, NotChecked=0, Total=5256 [2024-09-11 19:29:07,161 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 72 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:09,068 INFO L93 Difference]: Finished difference Result 164 states and 179 transitions. [2024-09-11 19:29:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-11 19:29:09,068 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 72 states have internal predecessors, (157), 0 states have call successors, (0), 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 137 [2024-09-11 19:29:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:09,070 INFO L225 Difference]: With dead ends: 164 [2024-09-11 19:29:09,070 INFO L226 Difference]: Without dead ends: 151 [2024-09-11 19:29:09,074 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2532 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6597, Invalid=11763, Unknown=0, NotChecked=0, Total=18360 [2024-09-11 19:29:09,075 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:09,075 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:29:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-09-11 19:29:09,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2024-09-11 19:29:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0277777777777777) internal successors, (148), 144 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2024-09-11 19:29:09,097 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 137 [2024-09-11 19:29:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:09,098 INFO L474 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2024-09-11 19:29:09,098 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 72 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:09,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2024-09-11 19:29:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-11 19:29:09,100 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:09,100 INFO L216 NwaCegarLoop]: trace histogram [65, 63, 8, 2, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:09,116 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 19:29:09,304 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 19:29:09,304 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:09,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:09,305 INFO L85 PathProgramCache]: Analyzing trace with hash -304206244, now seen corresponding path program 4 times [2024-09-11 19:29:09,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:09,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531724420] [2024-09-11 19:29:09,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:09,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 192 proven. 4032 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 19:29:12,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:12,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531724420] [2024-09-11 19:29:12,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531724420] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:12,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404151226] [2024-09-11 19:29:12,028 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:29:12,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:12,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:12,030 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 19:29:12,032 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 19:29:12,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:29:12,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:12,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-11 19:29:12,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 192 proven. 4032 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 19:29:12,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 192 proven. 4032 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 19:29:16,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404151226] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:16,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:16,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2024-09-11 19:29:16,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894063415] [2024-09-11 19:29:16,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:16,566 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-11 19:29:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:16,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-11 19:29:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2024-09-11 19:29:16,573 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand has 131 states, 131 states have (on average 2.053435114503817) internal successors, (269), 130 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:16,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:16,945 INFO L93 Difference]: Finished difference Result 293 states and 364 transitions. [2024-09-11 19:29:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-09-11 19:29:16,946 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.053435114503817) internal successors, (269), 130 states have internal predecessors, (269), 0 states have call successors, (0), 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 144 [2024-09-11 19:29:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:16,948 INFO L225 Difference]: With dead ends: 293 [2024-09-11 19:29:16,948 INFO L226 Difference]: Without dead ends: 275 [2024-09-11 19:29:16,951 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2024-09-11 19:29:16,952 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:16,952 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:29:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-11 19:29:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2024-09-11 19:29:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.0145985401459854) internal successors, (278), 274 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 278 transitions. [2024-09-11 19:29:16,990 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 278 transitions. Word has length 144 [2024-09-11 19:29:16,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:16,991 INFO L474 AbstractCegarLoop]: Abstraction has 275 states and 278 transitions. [2024-09-11 19:29:16,991 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.053435114503817) internal successors, (269), 130 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:16,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 278 transitions. [2024-09-11 19:29:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-09-11 19:29:16,996 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:16,996 INFO L216 NwaCegarLoop]: trace histogram [130, 128, 8, 2, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:17,014 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 19:29:17,197 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 19:29:17,198 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:17,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1396712103, now seen corresponding path program 5 times [2024-09-11 19:29:17,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:17,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043543559] [2024-09-11 19:29:17,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16936 backedges. 387 proven. 16512 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 19:29:28,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043543559] [2024-09-11 19:29:28,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043543559] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442240821] [2024-09-11 19:29:28,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:29:28,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:28,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:28,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:28,053 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 19:29:28,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 131 check-sat command(s) [2024-09-11 19:29:28,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:28,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 258 conjuncts are in the unsatisfiable core [2024-09-11 19:29:28,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16936 backedges. 387 proven. 16512 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 19:29:28,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16936 backedges. 387 proven. 16512 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 19:29:44,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442240821] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:44,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:44,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130, 130] total 260 [2024-09-11 19:29:44,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224871765] [2024-09-11 19:29:44,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:44,665 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 261 states [2024-09-11 19:29:44,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 261 interpolants. [2024-09-11 19:29:44,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33930, Invalid=33930, Unknown=0, NotChecked=0, Total=67860 [2024-09-11 19:29:44,680 INFO L87 Difference]: Start difference. First operand 275 states and 278 transitions. Second operand has 261 states, 261 states have (on average 2.0268199233716473) internal successors, (529), 260 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:45,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:45,743 INFO L93 Difference]: Finished difference Result 553 states and 689 transitions. [2024-09-11 19:29:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2024-09-11 19:29:45,744 INFO L78 Accepts]: Start accepts. Automaton has has 261 states, 261 states have (on average 2.0268199233716473) internal successors, (529), 260 states have internal predecessors, (529), 0 states have call successors, (0), 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 274 [2024-09-11 19:29:45,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:45,746 INFO L225 Difference]: With dead ends: 553 [2024-09-11 19:29:45,746 INFO L226 Difference]: Without dead ends: 535 [2024-09-11 19:29:45,750 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=33930, Invalid=33930, Unknown=0, NotChecked=0, Total=67860 [2024-09-11 19:29:45,751 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:45,751 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:29:45,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-09-11 19:29:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-09-11 19:29:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 1.0074906367041199) internal successors, (538), 534 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 538 transitions. [2024-09-11 19:29:45,804 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 538 transitions. Word has length 274 [2024-09-11 19:29:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:45,805 INFO L474 AbstractCegarLoop]: Abstraction has 535 states and 538 transitions. [2024-09-11 19:29:45,805 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 261 states, 261 states have (on average 2.0268199233716473) internal successors, (529), 260 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:29:45,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 538 transitions. [2024-09-11 19:29:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-09-11 19:29:45,814 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:45,815 INFO L216 NwaCegarLoop]: trace histogram [260, 258, 8, 2, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:45,833 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-11 19:29:46,015 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-11 19:29:46,016 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:46,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1568094611, now seen corresponding path program 6 times [2024-09-11 19:29:46,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:46,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120984912] [2024-09-11 19:29:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:46,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 67636 backedges. 777 proven. 66822 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 19:30:36,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:30:36,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120984912] [2024-09-11 19:30:36,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120984912] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:30:36,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517549049] [2024-09-11 19:30:36,033 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:30:36,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:36,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:30:36,035 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:30:36,037 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-11 19:30:36,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-09-11 19:30:36,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:30:36,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:30:36,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:30:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 67636 backedges. 778 proven. 36 refuted. 0 times theorem prover too weak. 66822 trivial. 0 not checked. [2024-09-11 19:30:38,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:30:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 67636 backedges. 778 proven. 36 refuted. 0 times theorem prover too weak. 66822 trivial. 0 not checked. [2024-09-11 19:30:39,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517549049] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:30:39,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:30:39,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [260, 10, 10] total 278 [2024-09-11 19:30:39,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972411736] [2024-09-11 19:30:39,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:30:39,454 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 279 states [2024-09-11 19:30:39,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:30:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 279 interpolants. [2024-09-11 19:30:39,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34119, Invalid=43443, Unknown=0, NotChecked=0, Total=77562 [2024-09-11 19:30:39,462 INFO L87 Difference]: Start difference. First operand 535 states and 538 transitions. Second operand has 279 states, 279 states have (on average 2.003584229390681) internal successors, (559), 278 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:31:05,878 INFO L93 Difference]: Finished difference Result 571 states and 591 transitions. [2024-09-11 19:31:05,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2024-09-11 19:31:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 279 states, 279 states have (on average 2.003584229390681) internal successors, (559), 278 states have internal predecessors, (559), 0 states have call successors, (0), 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 534 [2024-09-11 19:31:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:31:05,882 INFO L225 Difference]: With dead ends: 571 [2024-09-11 19:31:05,882 INFO L226 Difference]: Without dead ends: 553 [2024-09-11 19:31:05,895 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1585 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 536 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38374 ImplicationChecksByTransitivity, 46.5s TimeCoverageRelationStatistics Valid=105862, Invalid=183044, Unknown=0, NotChecked=0, Total=288906 [2024-09-11 19:31:05,896 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:31:05,896 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 40 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:31:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-09-11 19:31:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 547. [2024-09-11 19:31:05,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.0073260073260073) internal successors, (550), 546 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 550 transitions. [2024-09-11 19:31:05,939 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 550 transitions. Word has length 534 [2024-09-11 19:31:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:05,940 INFO L474 AbstractCegarLoop]: Abstraction has 547 states and 550 transitions. [2024-09-11 19:31:05,940 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 279 states, 279 states have (on average 2.003584229390681) internal successors, (559), 278 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:31:05,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:05,941 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 550 transitions. [2024-09-11 19:31:05,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-09-11 19:31:05,943 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:05,943 INFO L216 NwaCegarLoop]: trace histogram [261, 259, 18, 2, 1, 1, 1, 1, 1, 1] [2024-09-11 19:31:05,957 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-11 19:31:06,144 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-11 19:31:06,144 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:06,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash 215113488, now seen corresponding path program 7 times [2024-09-11 19:31:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727201325] [2024-09-11 19:31:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 68292 backedges. 780 proven. 67340 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-11 19:31:57,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727201325] [2024-09-11 19:31:57,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727201325] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408165826] [2024-09-11 19:31:57,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:31:57,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:57,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:57,297 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:57,298 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-11 19:31:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:57,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 520 conjuncts are in the unsatisfiable core [2024-09-11 19:31:57,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 68292 backedges. 780 proven. 67340 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-11 19:31:58,220 INFO L327 TraceCheckSpWp]: Computing backward predicates...