./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pipeline.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pipeline.cil-2.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 c42f0f019aa30bac52b753d657fd0a7a27ad0fcef5ea61d179259276789b8861 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 03:12:53,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 03:12:53,157 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 03:12:53,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 03:12:53,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 03:12:53,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 03:12:53,192 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 03:12:53,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 03:12:53,194 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 03:12:53,196 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 03:12:53,196 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 03:12:53,196 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 03:12:53,197 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 03:12:53,198 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 03:12:53,198 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 03:12:53,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 03:12:53,199 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 03:12:53,199 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 03:12:53,199 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 03:12:53,200 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 03:12:53,200 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 03:12:53,200 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 03:12:53,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 03:12:53,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 03:12:53,201 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 03:12:53,202 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 03:12:53,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 03:12:53,202 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 03:12:53,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 03:12:53,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 03:12:53,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 03:12:53,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 03:12:53,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:12:53,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 03:12:53,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 03:12:53,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 03:12:53,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 03:12:53,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 03:12:53,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 03:12:53,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 03:12:53,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 03:12:53,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 03:12:53,205 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c42f0f019aa30bac52b753d657fd0a7a27ad0fcef5ea61d179259276789b8861 [2024-10-11 03:12:53,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 03:12:53,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 03:12:53,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 03:12:53,528 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 03:12:53,528 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 03:12:53,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pipeline.cil-2.c [2024-10-11 03:12:54,947 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 03:12:55,188 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 03:12:55,190 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pipeline.cil-2.c [2024-10-11 03:12:55,201 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3d0687db6/d5222e3110d3497aa70ef192c7525069/FLAG10e03b69c [2024-10-11 03:12:55,215 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3d0687db6/d5222e3110d3497aa70ef192c7525069 [2024-10-11 03:12:55,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 03:12:55,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 03:12:55,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 03:12:55,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 03:12:55,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 03:12:55,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35275e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55, skipping insertion in model container [2024-10-11 03:12:55,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 03:12:55,442 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pipeline.cil-2.c[640,653] [2024-10-11 03:12:55,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:12:55,566 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 03:12:55,580 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pipeline.cil-2.c[640,653] [2024-10-11 03:12:55,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:12:55,633 INFO L204 MainTranslator]: Completed translation [2024-10-11 03:12:55,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55 WrapperNode [2024-10-11 03:12:55,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 03:12:55,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 03:12:55,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 03:12:55,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 03:12:55,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,698 INFO L138 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 426 [2024-10-11 03:12:55,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 03:12:55,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 03:12:55,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 03:12:55,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 03:12:55,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,721 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,749 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 03:12:55,749 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,749 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 03:12:55,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 03:12:55,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 03:12:55,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 03:12:55,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (1/1) ... [2024-10-11 03:12:55,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:12:55,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:12:55,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 03:12:55,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 03:12:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 03:12:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 03:12:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2024-10-11 03:12:55,879 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2024-10-11 03:12:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 03:12:55,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 03:12:55,994 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 03:12:55,997 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 03:12:56,580 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-10-11 03:12:56,581 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 03:12:56,637 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 03:12:56,638 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 03:12:56,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:12:56 BoogieIcfgContainer [2024-10-11 03:12:56,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 03:12:56,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 03:12:56,640 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 03:12:56,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 03:12:56,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:12:55" (1/3) ... [2024-10-11 03:12:56,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750ff5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:12:56, skipping insertion in model container [2024-10-11 03:12:56,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:12:55" (2/3) ... [2024-10-11 03:12:56,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750ff5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:12:56, skipping insertion in model container [2024-10-11 03:12:56,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:12:56" (3/3) ... [2024-10-11 03:12:56,647 INFO L112 eAbstractionObserver]: Analyzing ICFG pipeline.cil-2.c [2024-10-11 03:12:56,664 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 03:12:56,665 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 03:12:56,730 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 03:12:56,737 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;@1de74ddd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 03:12:56,737 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 03:12:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 140 states have (on average 1.8428571428571427) internal successors, (258), 142 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 03:12:56,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-11 03:12:56,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:12:56,757 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:12:56,758 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:12:56,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:12:56,764 INFO L85 PathProgramCache]: Analyzing trace with hash -289912864, now seen corresponding path program 1 times [2024-10-11 03:12:56,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:12:56,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172191239] [2024-10-11 03:12:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:12:56,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:12:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:12:57,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:12:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:12:57,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-11 03:12:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:12:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 03:12:57,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:12:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172191239] [2024-10-11 03:12:57,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172191239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:12:57,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:12:57,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 03:12:57,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875164156] [2024-10-11 03:12:57,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:12:57,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 03:12:57,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:12:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 03:12:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:12:57,700 INFO L87 Difference]: Start difference. First operand has 146 states, 140 states have (on average 1.8428571428571427) internal successors, (258), 142 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:12:58,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:12:58,717 INFO L93 Difference]: Finished difference Result 474 states and 864 transitions. [2024-10-11 03:12:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 03:12:58,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 92 [2024-10-11 03:12:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:12:58,731 INFO L225 Difference]: With dead ends: 474 [2024-10-11 03:12:58,732 INFO L226 Difference]: Without dead ends: 330 [2024-10-11 03:12:58,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:12:58,740 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 329 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 03:12:58,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 494 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 03:12:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-10-11 03:12:58,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 144. [2024-10-11 03:12:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.7985611510791366) internal successors, (250), 140 states have internal predecessors, (250), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 03:12:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 256 transitions. [2024-10-11 03:12:58,796 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 256 transitions. Word has length 92 [2024-10-11 03:12:58,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:12:58,797 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 256 transitions. [2024-10-11 03:12:58,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:12:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 256 transitions. [2024-10-11 03:12:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:12:58,810 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:12:58,810 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:12:58,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 03:12:58,811 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:12:58,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:12:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash 682988412, now seen corresponding path program 1 times [2024-10-11 03:12:58,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:12:58,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951543041] [2024-10-11 03:12:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:12:58,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:12:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:12:59,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:12:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:12:59,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:12:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:12:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-11 03:12:59,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:12:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951543041] [2024-10-11 03:12:59,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951543041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:12:59,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:12:59,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 03:12:59,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261169019] [2024-10-11 03:12:59,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:12:59,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 03:12:59,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:12:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 03:12:59,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:12:59,335 INFO L87 Difference]: Start difference. First operand 144 states and 256 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:00,122 INFO L93 Difference]: Finished difference Result 532 states and 962 transitions. [2024-10-11 03:13:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 03:13:00,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:00,129 INFO L225 Difference]: With dead ends: 532 [2024-10-11 03:13:00,129 INFO L226 Difference]: Without dead ends: 390 [2024-10-11 03:13:00,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:13:00,131 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 471 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:00,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 711 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 03:13:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-10-11 03:13:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 174. [2024-10-11 03:13:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.8224852071005917) internal successors, (308), 170 states have internal predecessors, (308), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 03:13:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 314 transitions. [2024-10-11 03:13:00,161 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 314 transitions. Word has length 184 [2024-10-11 03:13:00,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:00,163 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 314 transitions. [2024-10-11 03:13:00,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 314 transitions. [2024-10-11 03:13:00,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:00,167 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:00,167 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:00,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 03:13:00,168 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:00,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1890617728, now seen corresponding path program 1 times [2024-10-11 03:13:00,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:00,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577854091] [2024-10-11 03:13:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:00,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:00,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:00,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-11 03:13:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:00,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577854091] [2024-10-11 03:13:00,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577854091] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:00,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:13:00,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 03:13:00,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404791637] [2024-10-11 03:13:00,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:00,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 03:13:00,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:00,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 03:13:00,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:00,576 INFO L87 Difference]: Start difference. First operand 174 states and 314 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:01,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:01,360 INFO L93 Difference]: Finished difference Result 650 states and 1188 transitions. [2024-10-11 03:13:01,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 03:13:01,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:01,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:01,364 INFO L225 Difference]: With dead ends: 650 [2024-10-11 03:13:01,365 INFO L226 Difference]: Without dead ends: 478 [2024-10-11 03:13:01,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:13:01,367 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 471 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:01,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 708 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 03:13:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-10-11 03:13:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 218. [2024-10-11 03:13:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.84037558685446) internal successors, (392), 214 states have internal predecessors, (392), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 03:13:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 398 transitions. [2024-10-11 03:13:01,394 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 398 transitions. Word has length 184 [2024-10-11 03:13:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:01,394 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 398 transitions. [2024-10-11 03:13:01,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 398 transitions. [2024-10-11 03:13:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:01,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:01,397 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:01,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 03:13:01,397 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:01,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:01,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1190043012, now seen corresponding path program 1 times [2024-10-11 03:13:01,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:01,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891915480] [2024-10-11 03:13:01,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:01,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:01,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:01,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-11 03:13:01,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:01,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891915480] [2024-10-11 03:13:01,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891915480] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:01,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:13:01,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 03:13:01,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605940616] [2024-10-11 03:13:01,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:01,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 03:13:01,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:01,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 03:13:01,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:01,721 INFO L87 Difference]: Start difference. First operand 218 states and 398 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:02,726 INFO L93 Difference]: Finished difference Result 1004 states and 1848 transitions. [2024-10-11 03:13:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 03:13:02,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:02,731 INFO L225 Difference]: With dead ends: 1004 [2024-10-11 03:13:02,731 INFO L226 Difference]: Without dead ends: 788 [2024-10-11 03:13:02,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-11 03:13:02,734 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 794 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:02,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 716 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 03:13:02,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2024-10-11 03:13:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 337. [2024-10-11 03:13:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 332 states have (on average 1.8644578313253013) internal successors, (619), 333 states have internal predecessors, (619), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 03:13:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 625 transitions. [2024-10-11 03:13:02,758 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 625 transitions. Word has length 184 [2024-10-11 03:13:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:02,758 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 625 transitions. [2024-10-11 03:13:02,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 625 transitions. [2024-10-11 03:13:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:02,761 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:02,762 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:02,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 03:13:02,762 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:02,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1530401024, now seen corresponding path program 1 times [2024-10-11 03:13:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:02,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961236928] [2024-10-11 03:13:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:02,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:03,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:03,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:03,063 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-11 03:13:03,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:03,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961236928] [2024-10-11 03:13:03,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961236928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:03,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:13:03,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 03:13:03,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562282625] [2024-10-11 03:13:03,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:03,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 03:13:03,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:03,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 03:13:03,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:03,066 INFO L87 Difference]: Start difference. First operand 337 states and 625 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:03,999 INFO L93 Difference]: Finished difference Result 1231 states and 2301 transitions. [2024-10-11 03:13:03,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 03:13:04,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:04,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:04,005 INFO L225 Difference]: With dead ends: 1231 [2024-10-11 03:13:04,005 INFO L226 Difference]: Without dead ends: 896 [2024-10-11 03:13:04,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-11 03:13:04,008 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 805 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:04,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 522 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 03:13:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2024-10-11 03:13:04,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 427. [2024-10-11 03:13:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 422 states have (on average 1.6943127962085307) internal successors, (715), 423 states have internal predecessors, (715), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 03:13:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 721 transitions. [2024-10-11 03:13:04,034 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 721 transitions. Word has length 184 [2024-10-11 03:13:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:04,035 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 721 transitions. [2024-10-11 03:13:04,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 721 transitions. [2024-10-11 03:13:04,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:04,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:04,038 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:04,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 03:13:04,038 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:04,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash -69895292, now seen corresponding path program 1 times [2024-10-11 03:13:04,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:04,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870584888] [2024-10-11 03:13:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:04,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:04,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:04,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-11 03:13:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:04,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870584888] [2024-10-11 03:13:04,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870584888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:04,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:13:04,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 03:13:04,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055905329] [2024-10-11 03:13:04,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:04,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 03:13:04,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:04,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 03:13:04,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:04,373 INFO L87 Difference]: Start difference. First operand 427 states and 721 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:05,379 INFO L93 Difference]: Finished difference Result 1802 states and 3035 transitions. [2024-10-11 03:13:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 03:13:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:05,388 INFO L225 Difference]: With dead ends: 1802 [2024-10-11 03:13:05,388 INFO L226 Difference]: Without dead ends: 1377 [2024-10-11 03:13:05,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-11 03:13:05,392 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 706 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:05,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 775 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 03:13:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2024-10-11 03:13:05,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 630. [2024-10-11 03:13:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 625 states have (on average 1.6768) internal successors, (1048), 626 states have internal predecessors, (1048), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 03:13:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1054 transitions. [2024-10-11 03:13:05,429 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1054 transitions. Word has length 184 [2024-10-11 03:13:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:05,429 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 1054 transitions. [2024-10-11 03:13:05,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:05,431 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1054 transitions. [2024-10-11 03:13:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:05,434 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:05,434 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:05,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 03:13:05,435 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:05,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:05,435 INFO L85 PathProgramCache]: Analyzing trace with hash 128402048, now seen corresponding path program 1 times [2024-10-11 03:13:05,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:05,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264964931] [2024-10-11 03:13:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:05,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:05,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:05,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 03:13:05,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:05,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264964931] [2024-10-11 03:13:05,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264964931] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:13:05,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414959555] [2024-10-11 03:13:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:05,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:13:05,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:13:05,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 03:13:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:05,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 03:13:05,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:13:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-11 03:13:05,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 03:13:05,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414959555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:05,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 03:13:05,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-11 03:13:05,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009914124] [2024-10-11 03:13:05,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:05,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:13:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:13:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:13:05,931 INFO L87 Difference]: Start difference. First operand 630 states and 1054 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:05,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:05,957 INFO L93 Difference]: Finished difference Result 1258 states and 2108 transitions. [2024-10-11 03:13:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:13:05,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:05,979 INFO L225 Difference]: With dead ends: 1258 [2024-10-11 03:13:05,980 INFO L226 Difference]: Without dead ends: 630 [2024-10-11 03:13:05,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:13:05,983 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:05,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 246 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:13:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2024-10-11 03:13:05,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2024-10-11 03:13:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 625 states have (on average 1.6704) internal successors, (1044), 626 states have internal predecessors, (1044), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 03:13:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1050 transitions. [2024-10-11 03:13:06,003 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1050 transitions. Word has length 184 [2024-10-11 03:13:06,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:06,004 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 1050 transitions. [2024-10-11 03:13:06,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:06,004 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1050 transitions. [2024-10-11 03:13:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:06,007 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:06,007 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:06,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 03:13:06,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:06,209 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:06,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:06,209 INFO L85 PathProgramCache]: Analyzing trace with hash -280843260, now seen corresponding path program 1 times [2024-10-11 03:13:06,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:06,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551180254] [2024-10-11 03:13:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:06,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:06,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:06,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-11 03:13:06,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:06,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551180254] [2024-10-11 03:13:06,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551180254] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:13:06,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413670780] [2024-10-11 03:13:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:06,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:06,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:13:06,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:13:06,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 03:13:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:06,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 03:13:06,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:13:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-11 03:13:06,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 03:13:06,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413670780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:06,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 03:13:06,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-11 03:13:06,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970475977] [2024-10-11 03:13:06,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:06,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:13:06,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:06,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:13:06,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:13:06,704 INFO L87 Difference]: Start difference. First operand 630 states and 1050 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:06,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:06,748 INFO L93 Difference]: Finished difference Result 1258 states and 2100 transitions. [2024-10-11 03:13:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:13:06,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:06,751 INFO L225 Difference]: With dead ends: 1258 [2024-10-11 03:13:06,751 INFO L226 Difference]: Without dead ends: 630 [2024-10-11 03:13:06,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:13:06,756 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 240 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:06,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 245 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:13:06,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2024-10-11 03:13:06,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2024-10-11 03:13:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 625 states have (on average 1.664) internal successors, (1040), 626 states have internal predecessors, (1040), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 03:13:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1046 transitions. [2024-10-11 03:13:06,778 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1046 transitions. Word has length 184 [2024-10-11 03:13:06,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:06,778 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 1046 transitions. [2024-10-11 03:13:06,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1046 transitions. [2024-10-11 03:13:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:06,782 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:06,782 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:06,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 03:13:06,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:06,984 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:06,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1368523264, now seen corresponding path program 1 times [2024-10-11 03:13:06,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:06,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308176425] [2024-10-11 03:13:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:06,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:07,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:07,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 03:13:07,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308176425] [2024-10-11 03:13:07,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308176425] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:13:07,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395098831] [2024-10-11 03:13:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:07,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:07,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:13:07,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:13:07,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 03:13:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:07,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 03:13:07,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:13:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-11 03:13:07,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 03:13:07,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395098831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:07,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 03:13:07,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-11 03:13:07,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828046135] [2024-10-11 03:13:07,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:07,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:13:07,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:07,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:13:07,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:13:07,472 INFO L87 Difference]: Start difference. First operand 630 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:07,495 INFO L93 Difference]: Finished difference Result 1258 states and 2092 transitions. [2024-10-11 03:13:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:13:07,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:07,499 INFO L225 Difference]: With dead ends: 1258 [2024-10-11 03:13:07,500 INFO L226 Difference]: Without dead ends: 630 [2024-10-11 03:13:07,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:13:07,503 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 238 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:07,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 244 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:13:07,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2024-10-11 03:13:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2024-10-11 03:13:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 625 states have (on average 1.6576) internal successors, (1036), 626 states have internal predecessors, (1036), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 03:13:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1042 transitions. [2024-10-11 03:13:07,521 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1042 transitions. Word has length 184 [2024-10-11 03:13:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:07,522 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 1042 transitions. [2024-10-11 03:13:07,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1042 transitions. [2024-10-11 03:13:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:07,526 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:07,526 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:07,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 03:13:07,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:07,728 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:07,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1698823300, now seen corresponding path program 1 times [2024-10-11 03:13:07,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:07,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563709426] [2024-10-11 03:13:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:07,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:07,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:08,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 03:13:08,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563709426] [2024-10-11 03:13:08,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563709426] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:13:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693037366] [2024-10-11 03:13:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:08,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:08,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:13:08,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:13:08,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 03:13:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:08,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 03:13:08,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:13:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-11 03:13:08,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 03:13:08,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693037366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:08,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 03:13:08,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-10-11 03:13:08,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345211812] [2024-10-11 03:13:08,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:08,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:13:08,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:08,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:13:08,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:08,250 INFO L87 Difference]: Start difference. First operand 630 states and 1042 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:08,311 INFO L93 Difference]: Finished difference Result 1886 states and 3130 transitions. [2024-10-11 03:13:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:13:08,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:08,319 INFO L225 Difference]: With dead ends: 1886 [2024-10-11 03:13:08,320 INFO L226 Difference]: Without dead ends: 1258 [2024-10-11 03:13:08,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:08,325 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 221 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:08,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 480 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:13:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2024-10-11 03:13:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1256. [2024-10-11 03:13:08,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1248 states have (on average 1.6258012820512822) internal successors, (2029), 1249 states have internal predecessors, (2029), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-11 03:13:08,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 2044 transitions. [2024-10-11 03:13:08,369 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 2044 transitions. Word has length 184 [2024-10-11 03:13:08,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:08,370 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 2044 transitions. [2024-10-11 03:13:08,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:08,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 2044 transitions. [2024-10-11 03:13:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:08,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:08,378 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:08,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 03:13:08,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 03:13:08,579 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:08,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2122516104, now seen corresponding path program 1 times [2024-10-11 03:13:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:08,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366558765] [2024-10-11 03:13:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:08,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:08,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:08,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-11 03:13:08,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:08,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366558765] [2024-10-11 03:13:08,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366558765] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:13:08,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424374261] [2024-10-11 03:13:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:08,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:08,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:13:08,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:13:08,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 03:13:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:09,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 03:13:09,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:13:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 03:13:09,128 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 03:13:09,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424374261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:09,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 03:13:09,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-10-11 03:13:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101590930] [2024-10-11 03:13:09,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:09,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:13:09,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:13:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:09,132 INFO L87 Difference]: Start difference. First operand 1256 states and 2044 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:09,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:09,220 INFO L93 Difference]: Finished difference Result 3426 states and 5658 transitions. [2024-10-11 03:13:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:13:09,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:09,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:09,239 INFO L225 Difference]: With dead ends: 3426 [2024-10-11 03:13:09,239 INFO L226 Difference]: Without dead ends: 2172 [2024-10-11 03:13:09,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:09,257 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 221 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:09,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 479 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:13:09,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2024-10-11 03:13:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 2170. [2024-10-11 03:13:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 2156 states have (on average 1.62708719851577) internal successors, (3508), 2157 states have internal predecessors, (3508), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (36), 8 states have call predecessors, (36), 9 states have call successors, (36) [2024-10-11 03:13:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 3553 transitions. [2024-10-11 03:13:09,367 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 3553 transitions. Word has length 184 [2024-10-11 03:13:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:09,367 INFO L471 AbstractCegarLoop]: Abstraction has 2170 states and 3553 transitions. [2024-10-11 03:13:09,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 3553 transitions. [2024-10-11 03:13:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:09,385 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:09,385 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:09,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 03:13:09,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 03:13:09,587 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:09,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:09,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1184139384, now seen corresponding path program 1 times [2024-10-11 03:13:09,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:09,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003490751] [2024-10-11 03:13:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:09,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:09,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:09,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 03:13:09,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:09,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003490751] [2024-10-11 03:13:09,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003490751] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:13:09,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155537588] [2024-10-11 03:13:09,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:09,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:09,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:13:09,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:13:09,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 03:13:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:10,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 03:13:10,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:13:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-11 03:13:10,134 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 03:13:10,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155537588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:10,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 03:13:10,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-10-11 03:13:10,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675089720] [2024-10-11 03:13:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:10,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:13:10,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:10,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:13:10,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:10,138 INFO L87 Difference]: Start difference. First operand 2170 states and 3553 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:10,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:10,313 INFO L93 Difference]: Finished difference Result 6506 states and 10783 transitions. [2024-10-11 03:13:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:13:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:10,364 INFO L225 Difference]: With dead ends: 6506 [2024-10-11 03:13:10,365 INFO L226 Difference]: Without dead ends: 4338 [2024-10-11 03:13:10,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:10,412 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 220 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:10,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 481 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:13:10,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4338 states. [2024-10-11 03:13:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4338 to 4336. [2024-10-11 03:13:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 4310 states have (on average 1.6037122969837587) internal successors, (6912), 4311 states have internal predecessors, (6912), 17 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (136), 16 states have call predecessors, (136), 17 states have call successors, (136) [2024-10-11 03:13:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 7065 transitions. [2024-10-11 03:13:10,609 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 7065 transitions. Word has length 184 [2024-10-11 03:13:10,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:10,609 INFO L471 AbstractCegarLoop]: Abstraction has 4336 states and 7065 transitions. [2024-10-11 03:13:10,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:10,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 7065 transitions. [2024-10-11 03:13:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:10,708 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:10,708 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:10,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 03:13:10,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 03:13:10,909 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:10,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash 925951624, now seen corresponding path program 1 times [2024-10-11 03:13:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:10,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433326130] [2024-10-11 03:13:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:10,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:11,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:11,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-11 03:13:11,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:11,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433326130] [2024-10-11 03:13:11,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433326130] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:13:11,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563578329] [2024-10-11 03:13:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:11,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:11,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:13:11,202 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:13:11,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 03:13:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:11,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 03:13:11,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:13:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-11 03:13:11,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 03:13:11,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563578329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:11,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 03:13:11,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-11 03:13:11,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505847750] [2024-10-11 03:13:11,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:11,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:13:11,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:11,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:13:11,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:13:11,413 INFO L87 Difference]: Start difference. First operand 4336 states and 7065 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:11,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:11,771 INFO L93 Difference]: Finished difference Result 13004 states and 21703 transitions. [2024-10-11 03:13:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:13:11,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:11,909 INFO L225 Difference]: With dead ends: 13004 [2024-10-11 03:13:11,910 INFO L226 Difference]: Without dead ends: 8670 [2024-10-11 03:13:12,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:13:12,033 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 206 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:12,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 480 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:13:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8670 states. [2024-10-11 03:13:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8670 to 8668. [2024-10-11 03:13:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8668 states, 8618 states have (on average 1.5801810164771408) internal successors, (13618), 8619 states have internal predecessors, (13618), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (528), 32 states have call predecessors, (528), 33 states have call successors, (528) [2024-10-11 03:13:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8668 states to 8668 states and 14179 transitions. [2024-10-11 03:13:12,512 INFO L78 Accepts]: Start accepts. Automaton has 8668 states and 14179 transitions. Word has length 184 [2024-10-11 03:13:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:12,512 INFO L471 AbstractCegarLoop]: Abstraction has 8668 states and 14179 transitions. [2024-10-11 03:13:12,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:12,512 INFO L276 IsEmpty]: Start isEmpty. Operand 8668 states and 14179 transitions. [2024-10-11 03:13:12,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:12,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:12,617 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:12,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 03:13:12,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:12,819 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:12,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash 343119364, now seen corresponding path program 1 times [2024-10-11 03:13:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:12,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586480103] [2024-10-11 03:13:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:12,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:13,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:13,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-11 03:13:13,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:13,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586480103] [2024-10-11 03:13:13,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586480103] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:13:13,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382388172] [2024-10-11 03:13:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:13,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:13,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:13:13,141 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:13:13,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 03:13:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:13,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 03:13:13,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:13:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 03:13:13,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 03:13:13,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382388172] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:13,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 03:13:13,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-10-11 03:13:13,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065704006] [2024-10-11 03:13:13,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:13,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:13:13,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:13:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:13,350 INFO L87 Difference]: Start difference. First operand 8668 states and 14179 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:14,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:14,317 INFO L93 Difference]: Finished difference Result 26000 states and 44581 transitions. [2024-10-11 03:13:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:13:14,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:14,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:14,633 INFO L225 Difference]: With dead ends: 26000 [2024-10-11 03:13:14,634 INFO L226 Difference]: Without dead ends: 17334 [2024-10-11 03:13:14,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:14,850 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 220 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:14,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 481 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:13:14,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17334 states. [2024-10-11 03:13:15,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17334 to 17332. [2024-10-11 03:13:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17332 states, 17234 states have (on average 1.5565742137634908) internal successors, (26826), 17235 states have internal predecessors, (26826), 65 states have call successors, (65), 32 states have call predecessors, (65), 32 states have return successors, (2080), 64 states have call predecessors, (2080), 65 states have call successors, (2080) [2024-10-11 03:13:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17332 states to 17332 states and 28971 transitions. [2024-10-11 03:13:16,226 INFO L78 Accepts]: Start accepts. Automaton has 17332 states and 28971 transitions. Word has length 184 [2024-10-11 03:13:16,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:16,226 INFO L471 AbstractCegarLoop]: Abstraction has 17332 states and 28971 transitions. [2024-10-11 03:13:16,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:16,227 INFO L276 IsEmpty]: Start isEmpty. Operand 17332 states and 28971 transitions. [2024-10-11 03:13:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:16,615 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:16,615 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:16,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 03:13:16,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 03:13:16,816 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:16,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1323353216, now seen corresponding path program 1 times [2024-10-11 03:13:16,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:16,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288050592] [2024-10-11 03:13:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:16,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:17,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:17,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-11 03:13:17,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:17,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288050592] [2024-10-11 03:13:17,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288050592] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:13:17,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128197046] [2024-10-11 03:13:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:17,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:17,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:13:17,073 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:13:17,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 03:13:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:17,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 03:13:17,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:13:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 03:13:17,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 03:13:17,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128197046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:17,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 03:13:17,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-10-11 03:13:17,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606455126] [2024-10-11 03:13:17,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:17,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:13:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:17,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:13:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:17,372 INFO L87 Difference]: Start difference. First operand 17332 states and 28971 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:20,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:20,894 INFO L93 Difference]: Finished difference Result 51992 states and 95101 transitions. [2024-10-11 03:13:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:13:20,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:22,016 INFO L225 Difference]: With dead ends: 51992 [2024-10-11 03:13:22,017 INFO L226 Difference]: Without dead ends: 34662 [2024-10-11 03:13:22,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:22,687 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 220 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:22,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 481 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:13:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34662 states. [2024-10-11 03:13:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34662 to 34660. [2024-10-11 03:13:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34660 states, 34466 states have (on average 1.5329310044681714) internal successors, (52834), 34467 states have internal predecessors, (52834), 129 states have call successors, (129), 64 states have call predecessors, (129), 64 states have return successors, (8256), 128 states have call predecessors, (8256), 129 states have call successors, (8256) [2024-10-11 03:13:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34660 states to 34660 states and 61219 transitions. [2024-10-11 03:13:26,346 INFO L78 Accepts]: Start accepts. Automaton has 34660 states and 61219 transitions. Word has length 184 [2024-10-11 03:13:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:26,346 INFO L471 AbstractCegarLoop]: Abstraction has 34660 states and 61219 transitions. [2024-10-11 03:13:26,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 34660 states and 61219 transitions. [2024-10-11 03:13:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 03:13:27,791 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:13:27,791 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:13:27,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 03:13:27,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:27,992 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:13:27,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:13:27,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1273506944, now seen corresponding path program 1 times [2024-10-11 03:13:27,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:13:27,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143693627] [2024-10-11 03:13:27,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:27,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:13:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:28,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:13:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:28,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 03:13:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 03:13:28,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:13:28,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143693627] [2024-10-11 03:13:28,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143693627] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:13:28,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214728284] [2024-10-11 03:13:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:13:28,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:13:28,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:13:28,674 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:13:28,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 03:13:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:13:28,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 03:13:28,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:13:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-11 03:13:28,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 03:13:28,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214728284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:13:28,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 03:13:28,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-10-11 03:13:28,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138176414] [2024-10-11 03:13:28,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:13:28,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:13:28,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:13:28,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:13:28,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:28,863 INFO L87 Difference]: Start difference. First operand 34660 states and 61219 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:39,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:13:39,431 INFO L93 Difference]: Finished difference Result 103976 states and 216421 transitions. [2024-10-11 03:13:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:13:39,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2024-10-11 03:13:39,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:13:43,163 INFO L225 Difference]: With dead ends: 103976 [2024-10-11 03:13:43,163 INFO L226 Difference]: Without dead ends: 69318 [2024-10-11 03:13:45,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:13:45,693 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 221 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:13:45,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 479 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:13:45,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69318 states. [2024-10-11 03:13:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69318 to 69316. [2024-10-11 03:13:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69316 states, 68930 states have (on average 1.5092702741912085) internal successors, (104034), 68931 states have internal predecessors, (104034), 257 states have call successors, (257), 128 states have call predecessors, (257), 128 states have return successors, (32896), 256 states have call predecessors, (32896), 257 states have call successors, (32896) [2024-10-11 03:13:56,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69316 states to 69316 states and 137187 transitions. [2024-10-11 03:13:56,505 INFO L78 Accepts]: Start accepts. Automaton has 69316 states and 137187 transitions. Word has length 184 [2024-10-11 03:13:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:13:56,506 INFO L471 AbstractCegarLoop]: Abstraction has 69316 states and 137187 transitions. [2024-10-11 03:13:56,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:13:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 69316 states and 137187 transitions.