./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_copy1_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_copy1_ground-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 5b1ea2b89c0210def4460c68ce885cb310645908c528d57c04841cf488f85c6b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 08:50:52,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 08:50:53,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 08:50:53,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 08:50:53,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 08:50:53,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 08:50:53,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 08:50:53,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 08:50:53,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 08:50:53,091 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 08:50:53,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 08:50:53,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 08:50:53,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 08:50:53,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 08:50:53,094 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 08:50:53,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 08:50:53,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 08:50:53,095 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 08:50:53,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 08:50:53,096 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 08:50:53,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 08:50:53,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 08:50:53,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 08:50:53,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 08:50:53,101 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 08:50:53,101 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 08:50:53,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 08:50:53,102 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 08:50:53,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 08:50:53,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 08:50:53,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 08:50:53,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 08:50:53,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:50:53,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 08:50:53,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 08:50:53,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 08:50:53,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 08:50:53,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 08:50:53,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 08:50:53,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 08:50:53,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 08:50:53,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 08:50:53,109 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b1ea2b89c0210def4460c68ce885cb310645908c528d57c04841cf488f85c6b [2024-11-18 08:50:53,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 08:50:53,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 08:50:53,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 08:50:53,378 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 08:50:53,379 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 08:50:53,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copy1_ground-1.i [2024-11-18 08:50:54,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 08:50:54,996 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 08:50:54,997 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i [2024-11-18 08:50:55,003 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ccc3a06a/5087744227d44f3ea7e601a8b3e0fbf3/FLAG7e20b59bc [2024-11-18 08:50:55,016 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ccc3a06a/5087744227d44f3ea7e601a8b3e0fbf3 [2024-11-18 08:50:55,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 08:50:55,020 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 08:50:55,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 08:50:55,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 08:50:55,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 08:50:55,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59988571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55, skipping insertion in model container [2024-11-18 08:50:55,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,050 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 08:50:55,226 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i[816,829] [2024-11-18 08:50:55,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:50:55,249 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 08:50:55,258 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i[816,829] [2024-11-18 08:50:55,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:50:55,277 INFO L204 MainTranslator]: Completed translation [2024-11-18 08:50:55,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55 WrapperNode [2024-11-18 08:50:55,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 08:50:55,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 08:50:55,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 08:50:55,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 08:50:55,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,309 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-18 08:50:55,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 08:50:55,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 08:50:55,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 08:50:55,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 08:50:55,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,357 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-18 08:50:55,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 08:50:55,385 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 08:50:55,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 08:50:55,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 08:50:55,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (1/1) ... [2024-11-18 08:50:55,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:50:55,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:50:55,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 08:50:55,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 08:50:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 08:50:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 08:50:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 08:50:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 08:50:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 08:50:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 08:50:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 08:50:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 08:50:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 08:50:55,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 08:50:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 08:50:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 08:50:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 08:50:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 08:50:55,553 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 08:50:55,554 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 08:50:55,667 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-18 08:50:55,667 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 08:50:55,678 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 08:50:55,679 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 08:50:55,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:50:55 BoogieIcfgContainer [2024-11-18 08:50:55,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 08:50:55,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 08:50:55,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 08:50:55,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 08:50:55,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:50:55" (1/3) ... [2024-11-18 08:50:55,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703f00ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:50:55, skipping insertion in model container [2024-11-18 08:50:55,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:55" (2/3) ... [2024-11-18 08:50:55,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703f00ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:50:55, skipping insertion in model container [2024-11-18 08:50:55,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:50:55" (3/3) ... [2024-11-18 08:50:55,689 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy1_ground-1.i [2024-11-18 08:50:55,703 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 08:50:55,703 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 08:50:55,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 08:50:55,765 INFO L333 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=LoopHeads, 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;@9b79ac4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 08:50:55,765 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 08:50:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 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) [2024-11-18 08:50:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-18 08:50:55,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:50:55,775 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:50:55,775 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:50:55,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:50:55,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2016449835, now seen corresponding path program 1 times [2024-11-18 08:50:55,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:50:55,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557665546] [2024-11-18 08:50:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:50:55,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:50:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:50:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:50:56,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:50:56,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557665546] [2024-11-18 08:50:56,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557665546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:50:56,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:50:56,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:50:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291342063] [2024-11-18 08:50:56,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:50:56,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:50:56,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:50:56,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:50:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:50:56,095 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:56,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:50:56,129 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-11-18 08:50:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:50:56,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-18 08:50:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:50:56,143 INFO L225 Difference]: With dead ends: 34 [2024-11-18 08:50:56,144 INFO L226 Difference]: Without dead ends: 16 [2024-11-18 08:50:56,147 INFO L431 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 [2024-11-18 08:50:56,152 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:50:56,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:50:56,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-18 08:50:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-18 08:50:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-18 08:50:56,183 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2024-11-18 08:50:56,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:50:56,184 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-18 08:50:56,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-18 08:50:56,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 08:50:56,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:50:56,186 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:50:56,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 08:50:56,187 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:50:56,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:50:56,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1564645395, now seen corresponding path program 1 times [2024-11-18 08:50:56,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:50:56,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540104613] [2024-11-18 08:50:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:50:56,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:50:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:50:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:50:56,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:50:56,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540104613] [2024-11-18 08:50:56,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540104613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:50:56,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436840681] [2024-11-18 08:50:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:50:56,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:56,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:50:56,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:50:56,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 08:50:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:50:56,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 08:50:56,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:50:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:50:56,421 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 08:50:56,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436840681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:50:56,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 08:50:56,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 08:50:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557864321] [2024-11-18 08:50:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:50:56,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:50:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:50:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:50:56,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 08:50:56,427 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:56,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:50:56,450 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-18 08:50:56,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:50:56,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 08:50:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:50:56,452 INFO L225 Difference]: With dead ends: 24 [2024-11-18 08:50:56,452 INFO L226 Difference]: Without dead ends: 17 [2024-11-18 08:50:56,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 08:50:56,453 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:50:56,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:50:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-18 08:50:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-11-18 08:50:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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) [2024-11-18 08:50:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-18 08:50:56,461 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2024-11-18 08:50:56,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:50:56,461 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-18 08:50:56,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:56,462 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-18 08:50:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 08:50:56,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:50:56,463 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:50:56,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 08:50:56,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:56,667 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:50:56,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:50:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2031054225, now seen corresponding path program 1 times [2024-11-18 08:50:56,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:50:56,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957587198] [2024-11-18 08:50:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:50:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:50:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:50:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:50:56,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:50:56,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957587198] [2024-11-18 08:50:56,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957587198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:50:56,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594078418] [2024-11-18 08:50:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:50:56,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:56,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:50:56,747 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:50:56,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 08:50:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:50:56,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:50:56,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:50:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:50:56,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:50:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:50:56,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594078418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:50:56,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:50:56,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 08:50:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047768974] [2024-11-18 08:50:56,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:50:56,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 08:50:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:50:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 08:50:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:50:56,903 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:56,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:50:56,933 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-18 08:50:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:50:56,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-18 08:50:56,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:50:56,935 INFO L225 Difference]: With dead ends: 33 [2024-11-18 08:50:56,935 INFO L226 Difference]: Without dead ends: 22 [2024-11-18 08:50:56,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:50:56,937 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:50:56,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 50 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:50:56,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-18 08:50:56,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-18 08:50:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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) [2024-11-18 08:50:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-18 08:50:56,943 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2024-11-18 08:50:56,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:50:56,944 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-18 08:50:56,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:56,944 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-18 08:50:56,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 08:50:56,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:50:56,945 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:50:56,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 08:50:57,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-18 08:50:57,150 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:50:57,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:50:57,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2021040587, now seen corresponding path program 2 times [2024-11-18 08:50:57,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:50:57,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597336737] [2024-11-18 08:50:57,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:50:57,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:50:57,196 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:50:57,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 08:50:57,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:50:57,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597336737] [2024-11-18 08:50:57,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597336737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:50:57,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895363266] [2024-11-18 08:50:57,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:50:57,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:57,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:50:57,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:50:57,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 08:50:57,389 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:50:57,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:57,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 08:50:57,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:50:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:50:57,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:50:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:50:57,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895363266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:50:57,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:50:57,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 08:50:57,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098672952] [2024-11-18 08:50:57,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:50:57,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 08:50:57,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:50:57,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 08:50:57,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 08:50:57,552 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:57,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:50:57,616 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2024-11-18 08:50:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 08:50:57,617 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-18 08:50:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:50:57,618 INFO L225 Difference]: With dead ends: 48 [2024-11-18 08:50:57,618 INFO L226 Difference]: Without dead ends: 37 [2024-11-18 08:50:57,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 08:50:57,620 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:50:57,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:50:57,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-18 08:50:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-18 08:50:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-18 08:50:57,630 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 19 [2024-11-18 08:50:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:50:57,631 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-18 08:50:57,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:57,631 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-18 08:50:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 08:50:57,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:50:57,633 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:50:57,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 08:50:57,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:57,834 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:50:57,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:50:57,835 INFO L85 PathProgramCache]: Analyzing trace with hash 709790269, now seen corresponding path program 3 times [2024-11-18 08:50:57,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:50:57,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538572394] [2024-11-18 08:50:57,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:50:57,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:50:57,878 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:50:57,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 08:50:57,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:50:57,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538572394] [2024-11-18 08:50:57,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538572394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:50:57,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817906721] [2024-11-18 08:50:57,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:50:57,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:57,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:50:57,950 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:50:57,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 08:50:58,027 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:50:58,028 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:58,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 08:50:58,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:50:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 08:50:58,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:50:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 08:50:58,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817906721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:50:58,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:50:58,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-18 08:50:58,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352864572] [2024-11-18 08:50:58,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:50:58,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 08:50:58,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:50:58,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 08:50:58,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-18 08:50:58,100 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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) [2024-11-18 08:50:58,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:50:58,137 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-18 08:50:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 08:50:58,139 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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 33 [2024-11-18 08:50:58,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:50:58,141 INFO L225 Difference]: With dead ends: 51 [2024-11-18 08:50:58,141 INFO L226 Difference]: Without dead ends: 44 [2024-11-18 08:50:58,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-18 08:50:58,143 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:50:58,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:50:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-18 08:50:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-18 08:50:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:58,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2024-11-18 08:50:58,149 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 33 [2024-11-18 08:50:58,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:50:58,149 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2024-11-18 08:50:58,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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) [2024-11-18 08:50:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2024-11-18 08:50:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 08:50:58,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:50:58,150 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:50:58,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 08:50:58,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:58,354 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:50:58,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:50:58,355 INFO L85 PathProgramCache]: Analyzing trace with hash 753215797, now seen corresponding path program 4 times [2024-11-18 08:50:58,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:50:58,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968846900] [2024-11-18 08:50:58,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:50:58,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:50:58,389 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:50:58,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 08:50:58,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:50:58,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968846900] [2024-11-18 08:50:58,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968846900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:50:58,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679956912] [2024-11-18 08:50:58,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:50:58,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:50:58,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:50:58,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 08:50:58,676 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:50:58,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:58,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 08:50:58,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:50:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 08:50:58,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:50:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 08:50:58,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679956912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:50:58,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:50:58,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-18 08:50:58,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876295625] [2024-11-18 08:50:58,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:50:58,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 08:50:58,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:50:58,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 08:50:58,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 08:50:58,853 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:50:58,916 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2024-11-18 08:50:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 08:50:58,916 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-18 08:50:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:50:58,917 INFO L225 Difference]: With dead ends: 67 [2024-11-18 08:50:58,917 INFO L226 Difference]: Without dead ends: 60 [2024-11-18 08:50:58,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 08:50:58,919 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:50:58,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 69 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:50:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-18 08:50:58,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-18 08:50:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-18 08:50:58,942 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 41 [2024-11-18 08:50:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:50:58,942 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-18 08:50:58,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-18 08:50:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 08:50:58,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:50:58,944 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:50:58,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 08:50:59,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:59,145 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:50:59,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:50:59,145 INFO L85 PathProgramCache]: Analyzing trace with hash 712179493, now seen corresponding path program 5 times [2024-11-18 08:50:59,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:50:59,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563423891] [2024-11-18 08:50:59,146 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:50:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:50:59,227 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-18 08:50:59,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 08:50:59,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:50:59,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563423891] [2024-11-18 08:50:59,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563423891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:50:59,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016968379] [2024-11-18 08:50:59,585 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:50:59,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:59,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:50:59,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:50:59,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 08:51:02,930 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-18 08:51:02,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:02,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:51:02,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-18 08:51:03,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:51:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-18 08:51:03,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016968379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:51:03,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:51:03,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 39 [2024-11-18 08:51:03,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76574531] [2024-11-18 08:51:03,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:51:03,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 08:51:03,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:03,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 08:51:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=1071, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 08:51:03,462 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:03,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:03,593 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2024-11-18 08:51:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-18 08:51:03,594 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-18 08:51:03,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:03,595 INFO L225 Difference]: With dead ends: 124 [2024-11-18 08:51:03,595 INFO L226 Difference]: Without dead ends: 87 [2024-11-18 08:51:03,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=411, Invalid=1071, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 08:51:03,597 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:03,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 136 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:51:03,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-18 08:51:03,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-11-18 08:51:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2024-11-18 08:51:03,607 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 57 [2024-11-18 08:51:03,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:03,610 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2024-11-18 08:51:03,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2024-11-18 08:51:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-18 08:51:03,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:03,615 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:03,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 08:51:03,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:03,816 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:03,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1110679051, now seen corresponding path program 6 times [2024-11-18 08:51:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770650289] [2024-11-18 08:51:03,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 08:51:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:04,018 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-18 08:51:04,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-18 08:51:04,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770650289] [2024-11-18 08:51:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770650289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846005783] [2024-11-18 08:51:04,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 08:51:04,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:04,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:04,681 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:04,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 08:51:06,788 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-18 08:51:06,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:06,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 08:51:06,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-18 08:51:06,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:51:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-18 08:51:07,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846005783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:51:07,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:51:07,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-18 08:51:07,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034615871] [2024-11-18 08:51:07,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:51:07,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 08:51:07,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:07,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 08:51:07,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:51:07,668 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 49 states, 49 states have (on average 2.122448979591837) internal successors, (104), 49 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:07,814 INFO L93 Difference]: Finished difference Result 173 states and 200 transitions. [2024-11-18 08:51:07,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 08:51:07,816 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.122448979591837) internal successors, (104), 49 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-18 08:51:07,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:07,817 INFO L225 Difference]: With dead ends: 173 [2024-11-18 08:51:07,821 INFO L226 Difference]: Without dead ends: 134 [2024-11-18 08:51:07,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:51:07,823 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:07,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 50 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:51:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-18 08:51:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-18 08:51:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0225563909774436) internal successors, (136), 133 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2024-11-18 08:51:07,841 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 83 [2024-11-18 08:51:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:07,841 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2024-11-18 08:51:07,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.122448979591837) internal successors, (104), 49 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:07,842 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2024-11-18 08:51:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 08:51:07,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:07,845 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:07,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 08:51:08,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:08,046 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:08,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:08,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1043168805, now seen corresponding path program 7 times [2024-11-18 08:51:08,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:08,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78818023] [2024-11-18 08:51:08,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 08:51:08,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:51:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-18 08:51:10,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78818023] [2024-11-18 08:51:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78818023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450437035] [2024-11-18 08:51:10,239 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 08:51:10,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:10,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:10,241 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:10,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 08:51:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:51:10,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 08:51:10,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-18 08:51:10,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:51:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-18 08:51:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450437035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:51:13,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:51:13,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-18 08:51:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176316800] [2024-11-18 08:51:13,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:51:13,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-18 08:51:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-18 08:51:13,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 08:51:13,042 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand has 97 states, 97 states have (on average 2.0618556701030926) internal successors, (200), 97 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:13,297 INFO L93 Difference]: Finished difference Result 269 states and 320 transitions. [2024-11-18 08:51:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-18 08:51:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0618556701030926) internal successors, (200), 97 states have internal predecessors, (200), 0 states have call successors, (0), 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 131 [2024-11-18 08:51:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:13,301 INFO L225 Difference]: With dead ends: 269 [2024-11-18 08:51:13,301 INFO L226 Difference]: Without dead ends: 230 [2024-11-18 08:51:13,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 08:51:13,304 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:13,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 62 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 08:51:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-18 08:51:13,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2024-11-18 08:51:13,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.0131004366812226) internal successors, (232), 229 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 232 transitions. [2024-11-18 08:51:13,318 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 232 transitions. Word has length 131 [2024-11-18 08:51:13,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:13,319 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 232 transitions. [2024-11-18 08:51:13,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0618556701030926) internal successors, (200), 97 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 232 transitions. [2024-11-18 08:51:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 08:51:13,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:13,322 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:13,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 08:51:13,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-18 08:51:13,523 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:13,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1067341445, now seen corresponding path program 8 times [2024-11-18 08:51:13,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:13,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337043697] [2024-11-18 08:51:13,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:51:13,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:13,627 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:51:13,627 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9061 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-18 08:51:19,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:19,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337043697] [2024-11-18 08:51:19,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337043697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:19,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158659651] [2024-11-18 08:51:19,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:51:19,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:19,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:19,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:19,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 08:51:19,587 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:51:19,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:19,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-18 08:51:19,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9061 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-18 08:51:19,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:51:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9061 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-18 08:51:28,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158659651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:51:28,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:51:28,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-18 08:51:28,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648260302] [2024-11-18 08:51:28,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:51:28,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-18 08:51:28,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:28,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-18 08:51:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-18 08:51:28,567 INFO L87 Difference]: Start difference. First operand 230 states and 232 transitions. Second operand has 193 states, 193 states have (on average 2.0310880829015545) internal successors, (392), 193 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:29,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:29,227 INFO L93 Difference]: Finished difference Result 461 states and 560 transitions. [2024-11-18 08:51:29,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-18 08:51:29,228 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.0310880829015545) internal successors, (392), 193 states have internal predecessors, (392), 0 states have call successors, (0), 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 227 [2024-11-18 08:51:29,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:29,230 INFO L225 Difference]: With dead ends: 461 [2024-11-18 08:51:29,230 INFO L226 Difference]: Without dead ends: 422 [2024-11-18 08:51:29,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-18 08:51:29,232 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:29,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 122 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 08:51:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-18 08:51:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2024-11-18 08:51:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.007125890736342) internal successors, (424), 421 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 424 transitions. [2024-11-18 08:51:29,256 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 424 transitions. Word has length 227 [2024-11-18 08:51:29,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:29,256 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 424 transitions. [2024-11-18 08:51:29,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.0310880829015545) internal successors, (392), 193 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:29,257 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 424 transitions. [2024-11-18 08:51:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-11-18 08:51:29,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:29,262 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:29,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 08:51:29,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 08:51:29,463 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:29,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1648002885, now seen corresponding path program 9 times [2024-11-18 08:51:29,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:29,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720476442] [2024-11-18 08:51:29,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:51:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:29,613 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-18 08:51:29,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 36325 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-18 08:51:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720476442] [2024-11-18 08:51:29,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720476442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866618311] [2024-11-18 08:51:29,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:51:29,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:29,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:29,873 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:29,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 08:51:30,627 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-18 08:51:30,627 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:30,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 08:51:30,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 36325 backedges. 379 proven. 225 refuted. 0 times theorem prover too weak. 35721 trivial. 0 not checked. [2024-11-18 08:51:30,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:51:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 36325 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-18 08:51:31,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866618311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:51:31,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:51:31,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 18] total 37 [2024-11-18 08:51:31,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968180738] [2024-11-18 08:51:31,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:51:31,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 08:51:31,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 08:51:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=732, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 08:51:31,036 INFO L87 Difference]: Start difference. First operand 422 states and 424 transitions. Second operand has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 37 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:31,133 INFO L93 Difference]: Finished difference Result 463 states and 482 transitions. [2024-11-18 08:51:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-18 08:51:31,135 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 37 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 419 [2024-11-18 08:51:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:31,137 INFO L225 Difference]: With dead ends: 463 [2024-11-18 08:51:31,137 INFO L226 Difference]: Without dead ends: 456 [2024-11-18 08:51:31,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=600, Invalid=732, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 08:51:31,140 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:31,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 61 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:51:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-18 08:51:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2024-11-18 08:51:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 1.0065934065934066) internal successors, (458), 455 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 458 transitions. [2024-11-18 08:51:31,156 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 458 transitions. Word has length 419 [2024-11-18 08:51:31,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:31,157 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 458 transitions. [2024-11-18 08:51:31,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 37 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 458 transitions. [2024-11-18 08:51:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-18 08:51:31,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:31,164 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:31,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 08:51:31,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 08:51:31,365 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:31,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash -727613415, now seen corresponding path program 10 times [2024-11-18 08:51:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:31,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476321960] [2024-11-18 08:51:31,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:51:31,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:31,603 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:51:31,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 37124 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2024-11-18 08:51:57,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:57,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476321960] [2024-11-18 08:51:57,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476321960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:57,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096871255] [2024-11-18 08:51:57,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:51:57,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:57,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:57,900 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:57,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 08:51:58,414 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:51:58,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:58,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-18 08:51:58,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 37124 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2024-11-18 08:51:58,866 INFO L311 TraceCheckSpWp]: Computing backward predicates...