./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/bist_cell.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/bist_cell.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de455e90ef2ae1a82fb7a87bbcdb07831c7ef68e47976e1b2868a3e9de47a0a2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:32:40,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:32:40,602 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:32:40,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:32:40,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:32:40,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:32:40,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:32:40,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:32:40,631 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:32:40,631 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:32:40,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:32:40,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:32:40,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:32:40,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:32:40,637 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:32:40,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:32:40,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:32:40,638 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:32:40,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:32:40,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:32:40,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:32:40,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:32:40,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:32:40,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:32:40,644 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:32:40,645 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:32:40,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:32:40,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:32:40,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:32:40,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:32:40,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:32:40,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:32:40,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:32:40,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:32:40,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:32:40,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:32:40,648 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:32:40,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:32:40,649 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:32:40,649 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:32:40,649 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:32:40,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:32:40,650 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de455e90ef2ae1a82fb7a87bbcdb07831c7ef68e47976e1b2868a3e9de47a0a2 [2024-11-18 14:32:40,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:32:40,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:32:40,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:32:40,926 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:32:40,926 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:32:40,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/bist_cell.cil.c [2024-11-18 14:32:42,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:32:42,544 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:32:42,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/bist_cell.cil.c [2024-11-18 14:32:42,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/843c4cb8b/939cd94b17bc45238c31eb26a8f920bd/FLAGb43010ba2 [2024-11-18 14:32:42,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/843c4cb8b/939cd94b17bc45238c31eb26a8f920bd [2024-11-18 14:32:42,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:32:42,571 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:32:42,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:32:42,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:32:42,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:32:42,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:42,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa10bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42, skipping insertion in model container [2024-11-18 14:32:42,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:42,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:32:42,780 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/bist_cell.cil.c[639,652] [2024-11-18 14:32:42,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:32:42,866 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:32:42,878 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/bist_cell.cil.c[639,652] [2024-11-18 14:32:42,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:32:42,930 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:32:42,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42 WrapperNode [2024-11-18 14:32:42,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:32:42,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:32:42,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:32:42,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:32:42,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:42,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:42,973 INFO L138 Inliner]: procedures = 30, calls = 30, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 229 [2024-11-18 14:32:42,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:32:42,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:32:42,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:32:42,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:32:42,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:42,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:42,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:42,998 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]. [2024-11-18 14:32:42,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:42,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:43,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:43,014 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:43,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:43,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:43,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:32:43,026 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:32:43,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:32:43,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:32:43,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (1/1) ... [2024-11-18 14:32:43,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:32:43,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:43,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:32:43,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:32:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:32:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 14:32:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 14:32:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 14:32:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 14:32:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 14:32:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 14:32:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 14:32:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 14:32:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:32:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 14:32:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 14:32:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:32:43,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:32:43,188 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:32:43,192 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:32:43,510 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-18 14:32:43,510 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:32:43,524 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:32:43,524 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 14:32:43,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:32:43 BoogieIcfgContainer [2024-11-18 14:32:43,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:32:43,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:32:43,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:32:43,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:32:43,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:32:42" (1/3) ... [2024-11-18 14:32:43,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400c2f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:32:43, skipping insertion in model container [2024-11-18 14:32:43,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:42" (2/3) ... [2024-11-18 14:32:43,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400c2f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:32:43, skipping insertion in model container [2024-11-18 14:32:43,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:32:43" (3/3) ... [2024-11-18 14:32:43,533 INFO L112 eAbstractionObserver]: Analyzing ICFG bist_cell.cil.c [2024-11-18 14:32:43,545 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:32:43,545 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:32:43,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:32:43,613 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;@7bc2fac9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:32:43,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:32:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 86 states have (on average 1.558139534883721) internal successors, (134), 88 states have internal predecessors, (134), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-18 14:32:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 14:32:43,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:43,626 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:43,627 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:43,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:43,631 INFO L85 PathProgramCache]: Analyzing trace with hash 129401130, now seen corresponding path program 1 times [2024-11-18 14:32:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020753758] [2024-11-18 14:32:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:43,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:44,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:44,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020753758] [2024-11-18 14:32:44,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020753758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:44,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:44,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:32:44,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679715245] [2024-11-18 14:32:44,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:44,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:44,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:44,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:32:44,046 INFO L87 Difference]: Start difference. First operand has 103 states, 86 states have (on average 1.558139534883721) internal successors, (134), 88 states have internal predecessors, (134), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 14:32:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:44,304 INFO L93 Difference]: Finished difference Result 220 states and 331 transitions. [2024-11-18 14:32:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:32:44,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2024-11-18 14:32:44,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:44,314 INFO L225 Difference]: With dead ends: 220 [2024-11-18 14:32:44,314 INFO L226 Difference]: Without dead ends: 117 [2024-11-18 14:32:44,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:32:44,321 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 95 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:44,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 412 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:44,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-18 14:32:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-18 14:32:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 100 states have (on average 1.5) internal successors, (150), 101 states have internal predecessors, (150), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-18 14:32:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 171 transitions. [2024-11-18 14:32:44,362 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 171 transitions. Word has length 42 [2024-11-18 14:32:44,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:44,363 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 171 transitions. [2024-11-18 14:32:44,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 14:32:44,363 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 171 transitions. [2024-11-18 14:32:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:32:44,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:44,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:44,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:32:44,368 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:44,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:44,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1179475252, now seen corresponding path program 1 times [2024-11-18 14:32:44,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:44,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094168781] [2024-11-18 14:32:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:44,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:44,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:44,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094168781] [2024-11-18 14:32:44,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094168781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:44,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092669369] [2024-11-18 14:32:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:44,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:44,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:44,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:44,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:32:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:44,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:32:44,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:44,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:44,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092669369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:44,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:44,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:32:44,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619413909] [2024-11-18 14:32:44,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:44,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:32:44,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:44,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:32:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:32:44,821 INFO L87 Difference]: Start difference. First operand 117 states and 171 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:44,839 INFO L93 Difference]: Finished difference Result 227 states and 333 transitions. [2024-11-18 14:32:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:32:44,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2024-11-18 14:32:44,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:44,843 INFO L225 Difference]: With dead ends: 227 [2024-11-18 14:32:44,844 INFO L226 Difference]: Without dead ends: 117 [2024-11-18 14:32:44,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:32:44,860 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 128 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:44,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 142 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:32:44,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-18 14:32:44,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-18 14:32:44,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 100 states have (on average 1.49) internal successors, (149), 101 states have internal predecessors, (149), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-18 14:32:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 170 transitions. [2024-11-18 14:32:44,886 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 170 transitions. Word has length 101 [2024-11-18 14:32:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:44,890 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 170 transitions. [2024-11-18 14:32:44,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 170 transitions. [2024-11-18 14:32:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:32:44,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:44,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:44,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:32:45,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:45,098 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:45,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:45,098 INFO L85 PathProgramCache]: Analyzing trace with hash -779099534, now seen corresponding path program 1 times [2024-11-18 14:32:45,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:45,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549088526] [2024-11-18 14:32:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:45,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:45,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:45,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549088526] [2024-11-18 14:32:45,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549088526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:45,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722753410] [2024-11-18 14:32:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:45,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:45,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:45,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:45,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:32:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:45,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:32:45,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:32:45,472 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:45,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722753410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:45,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:45,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:32:45,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558274395] [2024-11-18 14:32:45,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:45,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:45,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:45,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:45,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:32:45,478 INFO L87 Difference]: Start difference. First operand 117 states and 170 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:45,696 INFO L93 Difference]: Finished difference Result 356 states and 529 transitions. [2024-11-18 14:32:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:32:45,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2024-11-18 14:32:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:45,700 INFO L225 Difference]: With dead ends: 356 [2024-11-18 14:32:45,703 INFO L226 Difference]: Without dead ends: 248 [2024-11-18 14:32:45,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:32:45,708 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 240 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:45,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 395 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:45,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-18 14:32:45,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 233. [2024-11-18 14:32:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 200 states have (on average 1.485) internal successors, (297), 203 states have internal predecessors, (297), 19 states have call successors, (19), 11 states have call predecessors, (19), 13 states have return successors, (27), 20 states have call predecessors, (27), 19 states have call successors, (27) [2024-11-18 14:32:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 343 transitions. [2024-11-18 14:32:45,740 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 343 transitions. Word has length 101 [2024-11-18 14:32:45,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:45,740 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 343 transitions. [2024-11-18 14:32:45,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 343 transitions. [2024-11-18 14:32:45,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:32:45,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:45,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:45,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 14:32:45,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-18 14:32:45,946 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:45,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:45,947 INFO L85 PathProgramCache]: Analyzing trace with hash -213976846, now seen corresponding path program 1 times [2024-11-18 14:32:45,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:45,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188084452] [2024-11-18 14:32:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:45,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:46,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:46,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188084452] [2024-11-18 14:32:46,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188084452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:46,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663074029] [2024-11-18 14:32:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:46,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:46,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:46,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:46,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:32:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:46,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:32:46,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:32:46,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:46,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663074029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:46,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:46,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:32:46,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429104424] [2024-11-18 14:32:46,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:46,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:46,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:46,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:46,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:32:46,237 INFO L87 Difference]: Start difference. First operand 233 states and 343 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:46,446 INFO L93 Difference]: Finished difference Result 705 states and 1058 transitions. [2024-11-18 14:32:46,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:32:46,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2024-11-18 14:32:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:46,454 INFO L225 Difference]: With dead ends: 705 [2024-11-18 14:32:46,454 INFO L226 Difference]: Without dead ends: 485 [2024-11-18 14:32:46,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:32:46,456 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 237 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:46,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 381 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-11-18 14:32:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 469. [2024-11-18 14:32:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 402 states have (on average 1.472636815920398) internal successors, (592), 411 states have internal predecessors, (592), 37 states have call successors, (37), 21 states have call predecessors, (37), 29 states have return successors, (71), 40 states have call predecessors, (71), 37 states have call successors, (71) [2024-11-18 14:32:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 700 transitions. [2024-11-18 14:32:46,515 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 700 transitions. Word has length 101 [2024-11-18 14:32:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:46,516 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 700 transitions. [2024-11-18 14:32:46,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 700 transitions. [2024-11-18 14:32:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:32:46,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:46,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:46,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:32:46,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:46,725 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:46,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:46,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2077246898, now seen corresponding path program 1 times [2024-11-18 14:32:46,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:46,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106957954] [2024-11-18 14:32:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:46,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:46,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:46,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106957954] [2024-11-18 14:32:46,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106957954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:46,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979830108] [2024-11-18 14:32:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:46,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:46,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:46,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:46,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:32:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:46,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:32:46,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:32:47,053 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:47,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979830108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:47,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:47,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:32:47,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909846296] [2024-11-18 14:32:47,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:47,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:47,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:47,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:47,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:32:47,058 INFO L87 Difference]: Start difference. First operand 469 states and 700 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:47,302 INFO L93 Difference]: Finished difference Result 1557 states and 2395 transitions. [2024-11-18 14:32:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:32:47,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2024-11-18 14:32:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:47,311 INFO L225 Difference]: With dead ends: 1557 [2024-11-18 14:32:47,313 INFO L226 Difference]: Without dead ends: 1109 [2024-11-18 14:32:47,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:32:47,317 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 250 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:47,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 425 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2024-11-18 14:32:47,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1021. [2024-11-18 14:32:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 880 states have (on average 1.45) internal successors, (1276), 907 states have internal predecessors, (1276), 73 states have call successors, (73), 41 states have call predecessors, (73), 67 states have return successors, (201), 80 states have call predecessors, (201), 73 states have call successors, (201) [2024-11-18 14:32:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1550 transitions. [2024-11-18 14:32:47,404 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1550 transitions. Word has length 101 [2024-11-18 14:32:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:47,404 INFO L471 AbstractCegarLoop]: Abstraction has 1021 states and 1550 transitions. [2024-11-18 14:32:47,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:47,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1550 transitions. [2024-11-18 14:32:47,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:32:47,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:47,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:47,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:32:47,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:47,613 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:47,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash -300696526, now seen corresponding path program 1 times [2024-11-18 14:32:47,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:47,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140973368] [2024-11-18 14:32:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:47,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:47,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140973368] [2024-11-18 14:32:47,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140973368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:47,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995051453] [2024-11-18 14:32:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:47,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:47,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:47,685 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:47,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:32:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:47,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:32:47,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:32:47,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:47,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995051453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:47,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:47,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:32:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317469722] [2024-11-18 14:32:47,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:47,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:47,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:32:47,851 INFO L87 Difference]: Start difference. First operand 1021 states and 1550 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:48,125 INFO L93 Difference]: Finished difference Result 3377 states and 5343 transitions. [2024-11-18 14:32:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:32:48,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2024-11-18 14:32:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:48,141 INFO L225 Difference]: With dead ends: 3377 [2024-11-18 14:32:48,141 INFO L226 Difference]: Without dead ends: 2393 [2024-11-18 14:32:48,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:32:48,146 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 245 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:48,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 409 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:32:48,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2024-11-18 14:32:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2261. [2024-11-18 14:32:48,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1954 states have (on average 1.4237461617195497) internal successors, (2782), 2035 states have internal predecessors, (2782), 145 states have call successors, (145), 81 states have call predecessors, (145), 161 states have return successors, (611), 160 states have call predecessors, (611), 145 states have call successors, (611) [2024-11-18 14:32:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3538 transitions. [2024-11-18 14:32:48,285 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3538 transitions. Word has length 101 [2024-11-18 14:32:48,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:48,285 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 3538 transitions. [2024-11-18 14:32:48,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3538 transitions. [2024-11-18 14:32:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:32:48,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:48,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:48,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:32:48,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:48,498 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:48,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash 38237618, now seen corresponding path program 1 times [2024-11-18 14:32:48,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:48,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441347396] [2024-11-18 14:32:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:48,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:48,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441347396] [2024-11-18 14:32:48,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441347396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:48,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550063442] [2024-11-18 14:32:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:48,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:48,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:48,559 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:48,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:32:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:48,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:32:48,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:48,733 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:48,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550063442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:48,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:48,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-18 14:32:48,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242553881] [2024-11-18 14:32:48,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:48,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:32:48,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:48,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:32:48,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:32:48,736 INFO L87 Difference]: Start difference. First operand 2261 states and 3538 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:48,868 INFO L93 Difference]: Finished difference Result 4501 states and 6958 transitions. [2024-11-18 14:32:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:32:48,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2024-11-18 14:32:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:48,882 INFO L225 Difference]: With dead ends: 4501 [2024-11-18 14:32:48,883 INFO L226 Difference]: Without dead ends: 2341 [2024-11-18 14:32:48,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:32:48,891 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:48,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 692 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:32:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2024-11-18 14:32:48,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 2341. [2024-11-18 14:32:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 2018 states have (on average 1.4103072348860257) internal successors, (2846), 2099 states have internal predecessors, (2846), 145 states have call successors, (145), 81 states have call predecessors, (145), 177 states have return successors, (643), 176 states have call predecessors, (643), 145 states have call successors, (643) [2024-11-18 14:32:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 3634 transitions. [2024-11-18 14:32:49,013 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 3634 transitions. Word has length 101 [2024-11-18 14:32:49,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:49,013 INFO L471 AbstractCegarLoop]: Abstraction has 2341 states and 3634 transitions. [2024-11-18 14:32:49,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 3634 transitions. [2024-11-18 14:32:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:32:49,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:49,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:49,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:32:49,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:49,226 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:49,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1425023028, now seen corresponding path program 1 times [2024-11-18 14:32:49,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:49,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756874344] [2024-11-18 14:32:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:49,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:49,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756874344] [2024-11-18 14:32:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756874344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198875620] [2024-11-18 14:32:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:49,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:49,305 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:49,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:32:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:49,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:32:49,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:32:49,437 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:49,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198875620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:49,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:49,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:32:49,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000983933] [2024-11-18 14:32:49,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:49,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:32:49,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:49,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:32:49,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:32:49,440 INFO L87 Difference]: Start difference. First operand 2341 states and 3634 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:32:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:49,571 INFO L93 Difference]: Finished difference Result 5110 states and 7919 transitions. [2024-11-18 14:32:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:32:49,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2024-11-18 14:32:49,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:49,591 INFO L225 Difference]: With dead ends: 5110 [2024-11-18 14:32:49,591 INFO L226 Difference]: Without dead ends: 2870 [2024-11-18 14:32:49,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:32:49,601 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 65 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:49,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 270 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:32:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2024-11-18 14:32:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2578. [2024-11-18 14:32:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2578 states, 2159 states have (on average 1.3756368689207967) internal successors, (2970), 2240 states have internal predecessors, (2970), 209 states have call successors, (209), 113 states have call predecessors, (209), 209 states have return successors, (788), 256 states have call predecessors, (788), 209 states have call successors, (788) [2024-11-18 14:32:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3967 transitions. [2024-11-18 14:32:49,748 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3967 transitions. Word has length 101 [2024-11-18 14:32:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:49,749 INFO L471 AbstractCegarLoop]: Abstraction has 2578 states and 3967 transitions. [2024-11-18 14:32:49,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:32:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3967 transitions. [2024-11-18 14:32:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:32:49,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:49,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:49,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 14:32:49,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:49,962 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:49,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:49,963 INFO L85 PathProgramCache]: Analyzing trace with hash 457672374, now seen corresponding path program 1 times [2024-11-18 14:32:49,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:49,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645728874] [2024-11-18 14:32:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:49,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645728874] [2024-11-18 14:32:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645728874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049600608] [2024-11-18 14:32:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:50,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:50,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:50,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:50,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:32:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:50,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:32:50,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 14:32:50,163 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:50,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049600608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:50,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:50,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:32:50,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895261091] [2024-11-18 14:32:50,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:50,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:50,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:50,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:50,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:32:50,167 INFO L87 Difference]: Start difference. First operand 2578 states and 3967 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:50,305 INFO L93 Difference]: Finished difference Result 4978 states and 7644 transitions. [2024-11-18 14:32:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:32:50,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2024-11-18 14:32:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:50,323 INFO L225 Difference]: With dead ends: 4978 [2024-11-18 14:32:50,323 INFO L226 Difference]: Without dead ends: 2626 [2024-11-18 14:32:50,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:32:50,333 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:50,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 551 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:32:50,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2024-11-18 14:32:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2626. [2024-11-18 14:32:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2207 states have (on average 1.3674671499773448) internal successors, (3018), 2288 states have internal predecessors, (3018), 209 states have call successors, (209), 113 states have call predecessors, (209), 209 states have return successors, (788), 256 states have call predecessors, (788), 209 states have call successors, (788) [2024-11-18 14:32:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 4015 transitions. [2024-11-18 14:32:50,467 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 4015 transitions. Word has length 101 [2024-11-18 14:32:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:50,468 INFO L471 AbstractCegarLoop]: Abstraction has 2626 states and 4015 transitions. [2024-11-18 14:32:50,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:50,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 4015 transitions. [2024-11-18 14:32:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:32:50,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:50,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:50,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:32:50,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-18 14:32:50,687 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:50,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:50,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2122057235, now seen corresponding path program 1 times [2024-11-18 14:32:50,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:50,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079078965] [2024-11-18 14:32:50,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:50,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:50,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:50,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079078965] [2024-11-18 14:32:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079078965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:50,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345437376] [2024-11-18 14:32:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:50,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:50,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:50,784 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:50,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:32:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:50,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:32:50,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:32:50,919 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:50,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345437376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:50,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:50,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:32:50,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922805320] [2024-11-18 14:32:50,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:50,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:32:50,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:50,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:32:50,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:32:50,923 INFO L87 Difference]: Start difference. First operand 2626 states and 4015 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:32:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:51,059 INFO L93 Difference]: Finished difference Result 5324 states and 8539 transitions. [2024-11-18 14:32:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:32:51,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2024-11-18 14:32:51,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:51,083 INFO L225 Difference]: With dead ends: 5324 [2024-11-18 14:32:51,084 INFO L226 Difference]: Without dead ends: 2908 [2024-11-18 14:32:51,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:32:51,095 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 16 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:51,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 276 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:32:51,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2024-11-18 14:32:51,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2908. [2024-11-18 14:32:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2393 states have (on average 1.3522774759715839) internal successors, (3236), 2474 states have internal predecessors, (3236), 273 states have call successors, (273), 145 states have call predecessors, (273), 241 states have return successors, (1046), 320 states have call predecessors, (1046), 273 states have call successors, (1046) [2024-11-18 14:32:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 4555 transitions. [2024-11-18 14:32:51,271 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 4555 transitions. Word has length 104 [2024-11-18 14:32:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:51,272 INFO L471 AbstractCegarLoop]: Abstraction has 2908 states and 4555 transitions. [2024-11-18 14:32:51,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:32:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 4555 transitions. [2024-11-18 14:32:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:32:51,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:51,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:51,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:32:51,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 14:32:51,485 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:51,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 163482449, now seen corresponding path program 1 times [2024-11-18 14:32:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:51,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402891002] [2024-11-18 14:32:51,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:51,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:51,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:51,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402891002] [2024-11-18 14:32:51,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402891002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:51,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717764401] [2024-11-18 14:32:51,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:51,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:51,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:51,563 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:51,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:32:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:51,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:32:51,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:32:51,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:51,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717764401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:51,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:51,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:32:51,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320083231] [2024-11-18 14:32:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:51,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:51,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:51,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:51,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:32:51,761 INFO L87 Difference]: Start difference. First operand 2908 states and 4555 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:32:52,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:52,153 INFO L93 Difference]: Finished difference Result 9208 states and 15036 transitions. [2024-11-18 14:32:52,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:32:52,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2024-11-18 14:32:52,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:52,201 INFO L225 Difference]: With dead ends: 9208 [2024-11-18 14:32:52,202 INFO L226 Difference]: Without dead ends: 6558 [2024-11-18 14:32:52,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:32:52,218 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 209 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:52,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 727 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2024-11-18 14:32:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 6458. [2024-11-18 14:32:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6458 states, 5429 states have (on average 1.3494197826487382) internal successors, (7326), 5688 states have internal predecessors, (7326), 481 states have call successors, (481), 257 states have call predecessors, (481), 547 states have return successors, (2540), 576 states have call predecessors, (2540), 481 states have call successors, (2540) [2024-11-18 14:32:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6458 states to 6458 states and 10347 transitions. [2024-11-18 14:32:52,718 INFO L78 Accepts]: Start accepts. Automaton has 6458 states and 10347 transitions. Word has length 104 [2024-11-18 14:32:52,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:52,719 INFO L471 AbstractCegarLoop]: Abstraction has 6458 states and 10347 transitions. [2024-11-18 14:32:52,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:32:52,719 INFO L276 IsEmpty]: Start isEmpty. Operand 6458 states and 10347 transitions. [2024-11-18 14:32:52,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:32:52,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:52,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:52,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 14:32:52,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 14:32:52,960 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:52,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:52,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1052671277, now seen corresponding path program 1 times [2024-11-18 14:32:52,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:52,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746926172] [2024-11-18 14:32:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:52,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:53,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746926172] [2024-11-18 14:32:53,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746926172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:53,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725808052] [2024-11-18 14:32:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:53,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:53,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:53,049 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:53,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:32:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:53,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 14:32:53,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:53,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:53,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725808052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:53,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:53,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-18 14:32:53,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254355388] [2024-11-18 14:32:53,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:53,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:53,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:53,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:32:53,211 INFO L87 Difference]: Start difference. First operand 6458 states and 10347 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:53,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:53,697 INFO L93 Difference]: Finished difference Result 14114 states and 22261 transitions. [2024-11-18 14:32:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:32:53,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2024-11-18 14:32:53,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:53,753 INFO L225 Difference]: With dead ends: 14114 [2024-11-18 14:32:53,754 INFO L226 Difference]: Without dead ends: 7922 [2024-11-18 14:32:53,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:32:53,781 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 87 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:53,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 300 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:32:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7922 states. [2024-11-18 14:32:54,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7922 to 6458. [2024-11-18 14:32:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6458 states, 5429 states have (on average 1.3490513906796833) internal successors, (7324), 5688 states have internal predecessors, (7324), 481 states have call successors, (481), 257 states have call predecessors, (481), 547 states have return successors, (2540), 576 states have call predecessors, (2540), 481 states have call successors, (2540) [2024-11-18 14:32:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6458 states to 6458 states and 10345 transitions. [2024-11-18 14:32:54,363 INFO L78 Accepts]: Start accepts. Automaton has 6458 states and 10345 transitions. Word has length 104 [2024-11-18 14:32:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:54,365 INFO L471 AbstractCegarLoop]: Abstraction has 6458 states and 10345 transitions. [2024-11-18 14:32:54,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:32:54,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6458 states and 10345 transitions. [2024-11-18 14:32:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-18 14:32:54,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:54,407 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:54,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 14:32:54,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 14:32:54,612 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:54,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash -611500932, now seen corresponding path program 1 times [2024-11-18 14:32:54,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:54,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435638036] [2024-11-18 14:32:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:54,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:54,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:54,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435638036] [2024-11-18 14:32:54,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435638036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126795387] [2024-11-18 14:32:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:54,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:54,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:54,732 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:54,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:32:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:54,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:32:54,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:32:54,883 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:54,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126795387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:54,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:54,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:32:54,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024913339] [2024-11-18 14:32:54,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:54,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:32:54,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:54,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:32:54,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:32:54,887 INFO L87 Difference]: Start difference. First operand 6458 states and 10345 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:32:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:55,223 INFO L93 Difference]: Finished difference Result 12874 states and 20913 transitions. [2024-11-18 14:32:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:32:55,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2024-11-18 14:32:55,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:55,297 INFO L225 Difference]: With dead ends: 12874 [2024-11-18 14:32:55,298 INFO L226 Difference]: Without dead ends: 6894 [2024-11-18 14:32:55,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:32:55,328 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 19 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:55,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 281 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:32:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6894 states. [2024-11-18 14:32:55,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6894 to 6894. [2024-11-18 14:32:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6894 states, 5721 states have (on average 1.340325117986366) internal successors, (7668), 5980 states have internal predecessors, (7668), 577 states have call successors, (577), 305 states have call predecessors, (577), 595 states have return successors, (2916), 672 states have call predecessors, (2916), 577 states have call successors, (2916) [2024-11-18 14:32:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6894 states to 6894 states and 11161 transitions. [2024-11-18 14:32:55,852 INFO L78 Accepts]: Start accepts. Automaton has 6894 states and 11161 transitions. Word has length 107 [2024-11-18 14:32:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:55,853 INFO L471 AbstractCegarLoop]: Abstraction has 6894 states and 11161 transitions. [2024-11-18 14:32:55,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:32:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6894 states and 11161 transitions. [2024-11-18 14:32:55,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-18 14:32:55,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:55,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:55,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:32:56,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 14:32:56,095 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:56,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:56,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1264981886, now seen corresponding path program 1 times [2024-11-18 14:32:56,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:56,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065191022] [2024-11-18 14:32:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:56,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:56,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:56,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065191022] [2024-11-18 14:32:56,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065191022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:56,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555033324] [2024-11-18 14:32:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:56,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:56,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:56,172 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:56,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:32:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:56,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:32:56,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:32:56,362 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:56,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555033324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:56,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:56,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:32:56,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596946189] [2024-11-18 14:32:56,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:56,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:56,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:56,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:56,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:32:56,365 INFO L87 Difference]: Start difference. First operand 6894 states and 11161 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:32:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:57,048 INFO L93 Difference]: Finished difference Result 13370 states and 21103 transitions. [2024-11-18 14:32:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:32:57,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2024-11-18 14:32:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:57,097 INFO L225 Difference]: With dead ends: 13370 [2024-11-18 14:32:57,098 INFO L226 Difference]: Without dead ends: 7018 [2024-11-18 14:32:57,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:32:57,118 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 197 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:57,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 695 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7018 states. [2024-11-18 14:32:57,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7018 to 7014. [2024-11-18 14:32:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7014 states, 5817 states have (on average 1.3312704143029053) internal successors, (7744), 6100 states have internal predecessors, (7744), 577 states have call successors, (577), 305 states have call predecessors, (577), 619 states have return successors, (2560), 672 states have call predecessors, (2560), 577 states have call successors, (2560) [2024-11-18 14:32:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7014 states to 7014 states and 10881 transitions. [2024-11-18 14:32:57,634 INFO L78 Accepts]: Start accepts. Automaton has 7014 states and 10881 transitions. Word has length 107 [2024-11-18 14:32:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:57,634 INFO L471 AbstractCegarLoop]: Abstraction has 7014 states and 10881 transitions. [2024-11-18 14:32:57,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:32:57,635 INFO L276 IsEmpty]: Start isEmpty. Operand 7014 states and 10881 transitions. [2024-11-18 14:32:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-18 14:32:57,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:57,659 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:57,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 14:32:57,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 14:32:57,860 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:57,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:57,860 INFO L85 PathProgramCache]: Analyzing trace with hash -549218888, now seen corresponding path program 2 times [2024-11-18 14:32:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565856256] [2024-11-18 14:32:57,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:32:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:57,874 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:32:57,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:32:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 14:32:57,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:57,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565856256] [2024-11-18 14:32:57,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565856256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:57,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:57,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:32:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847786612] [2024-11-18 14:32:57,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:57,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:57,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:57,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:32:57,931 INFO L87 Difference]: Start difference. First operand 7014 states and 10881 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:32:58,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:58,285 INFO L93 Difference]: Finished difference Result 7210 states and 11140 transitions. [2024-11-18 14:32:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:32:58,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 107 [2024-11-18 14:32:58,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:58,327 INFO L225 Difference]: With dead ends: 7210 [2024-11-18 14:32:58,328 INFO L226 Difference]: Without dead ends: 7206 [2024-11-18 14:32:58,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:32:58,337 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:58,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 553 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:32:58,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7206 states. [2024-11-18 14:32:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7206 to 7206. [2024-11-18 14:32:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7206 states, 6009 states have (on average 1.3206856382093526) internal successors, (7936), 6292 states have internal predecessors, (7936), 577 states have call successors, (577), 305 states have call predecessors, (577), 619 states have return successors, (2560), 672 states have call predecessors, (2560), 577 states have call successors, (2560) [2024-11-18 14:32:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7206 states to 7206 states and 11073 transitions. [2024-11-18 14:32:58,916 INFO L78 Accepts]: Start accepts. Automaton has 7206 states and 11073 transitions. Word has length 107 [2024-11-18 14:32:58,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:58,916 INFO L471 AbstractCegarLoop]: Abstraction has 7206 states and 11073 transitions. [2024-11-18 14:32:58,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:32:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7206 states and 11073 transitions. [2024-11-18 14:32:58,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-18 14:32:58,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:58,940 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:58,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:32:58,940 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:58,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:58,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1225788474, now seen corresponding path program 1 times [2024-11-18 14:32:58,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:58,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195248775] [2024-11-18 14:32:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:58,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:59,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:59,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195248775] [2024-11-18 14:32:59,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195248775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:59,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760018323] [2024-11-18 14:32:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:59,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:59,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:59,008 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:59,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:32:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:59,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:32:59,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:32:59,160 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:59,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760018323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:59,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:59,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-18 14:32:59,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523285085] [2024-11-18 14:32:59,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:59,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:32:59,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:59,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:32:59,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:32:59,162 INFO L87 Difference]: Start difference. First operand 7206 states and 11073 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:32:59,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:59,417 INFO L93 Difference]: Finished difference Result 13758 states and 20745 transitions. [2024-11-18 14:32:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:32:59,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 107 [2024-11-18 14:32:59,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:59,447 INFO L225 Difference]: With dead ends: 13758 [2024-11-18 14:32:59,447 INFO L226 Difference]: Without dead ends: 7110 [2024-11-18 14:32:59,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:32:59,462 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:59,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 692 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:32:59,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7110 states. [2024-11-18 14:32:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7110 to 7110. [2024-11-18 14:32:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7110 states, 5913 states have (on average 1.3150684931506849) internal successors, (7776), 6196 states have internal predecessors, (7776), 577 states have call successors, (577), 305 states have call predecessors, (577), 619 states have return successors, (2560), 672 states have call predecessors, (2560), 577 states have call successors, (2560) [2024-11-18 14:32:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7110 states to 7110 states and 10913 transitions. [2024-11-18 14:32:59,870 INFO L78 Accepts]: Start accepts. Automaton has 7110 states and 10913 transitions. Word has length 107 [2024-11-18 14:32:59,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:59,871 INFO L471 AbstractCegarLoop]: Abstraction has 7110 states and 10913 transitions. [2024-11-18 14:32:59,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:32:59,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7110 states and 10913 transitions. [2024-11-18 14:32:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-18 14:32:59,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:59,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:59,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 14:33:00,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:00,100 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:00,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:00,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1916204999, now seen corresponding path program 1 times [2024-11-18 14:33:00,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:00,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131528443] [2024-11-18 14:33:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:00,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:33:00,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:00,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131528443] [2024-11-18 14:33:00,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131528443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:00,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437066839] [2024-11-18 14:33:00,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:00,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:00,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:00,166 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:00,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:33:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:00,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 14:33:00,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:33:00,302 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:00,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437066839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:00,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:00,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-18 14:33:00,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539466851] [2024-11-18 14:33:00,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:00,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:33:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:00,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:33:00,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:33:00,305 INFO L87 Difference]: Start difference. First operand 7110 states and 10913 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:33:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:00,884 INFO L93 Difference]: Finished difference Result 15142 states and 23023 transitions. [2024-11-18 14:33:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:33:00,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2024-11-18 14:33:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:00,933 INFO L225 Difference]: With dead ends: 15142 [2024-11-18 14:33:00,933 INFO L226 Difference]: Without dead ends: 8334 [2024-11-18 14:33:00,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:33:00,955 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 75 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:00,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 352 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:33:00,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8334 states. [2024-11-18 14:33:01,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8334 to 7110. [2024-11-18 14:33:01,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7110 states, 5913 states have (on average 1.3143920175883645) internal successors, (7772), 6196 states have internal predecessors, (7772), 577 states have call successors, (577), 305 states have call predecessors, (577), 619 states have return successors, (2560), 672 states have call predecessors, (2560), 577 states have call successors, (2560) [2024-11-18 14:33:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7110 states to 7110 states and 10909 transitions. [2024-11-18 14:33:01,625 INFO L78 Accepts]: Start accepts. Automaton has 7110 states and 10909 transitions. Word has length 110 [2024-11-18 14:33:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:01,626 INFO L471 AbstractCegarLoop]: Abstraction has 7110 states and 10909 transitions. [2024-11-18 14:33:01,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:33:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 7110 states and 10909 transitions. [2024-11-18 14:33:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 14:33:01,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:01,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:01,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 14:33:01,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 14:33:01,856 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:01,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash -406385611, now seen corresponding path program 1 times [2024-11-18 14:33:01,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:01,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630490676] [2024-11-18 14:33:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:01,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:33:01,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:01,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630490676] [2024-11-18 14:33:01,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630490676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:01,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231164220] [2024-11-18 14:33:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:01,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:01,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:01,929 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:01,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:33:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:02,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:33:02,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 14:33:02,063 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:02,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231164220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:02,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:02,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:33:02,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369827961] [2024-11-18 14:33:02,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:02,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:33:02,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:02,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:33:02,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:33:02,066 INFO L87 Difference]: Start difference. First operand 7110 states and 10909 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:33:02,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:02,531 INFO L93 Difference]: Finished difference Result 14358 states and 22185 transitions. [2024-11-18 14:33:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:33:02,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 113 [2024-11-18 14:33:02,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:02,586 INFO L225 Difference]: With dead ends: 14358 [2024-11-18 14:33:02,586 INFO L226 Difference]: Without dead ends: 7774 [2024-11-18 14:33:02,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:33:02,611 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 21 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:02,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 283 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:33:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7774 states. [2024-11-18 14:33:03,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7774 to 7774. [2024-11-18 14:33:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7774 states, 6361 states have (on average 1.301682125451973) internal successors, (8280), 6644 states have internal predecessors, (8280), 721 states have call successors, (721), 377 states have call predecessors, (721), 691 states have return successors, (3000), 816 states have call predecessors, (3000), 721 states have call successors, (3000) [2024-11-18 14:33:03,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7774 states to 7774 states and 12001 transitions. [2024-11-18 14:33:03,325 INFO L78 Accepts]: Start accepts. Automaton has 7774 states and 12001 transitions. Word has length 113 [2024-11-18 14:33:03,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:03,326 INFO L471 AbstractCegarLoop]: Abstraction has 7774 states and 12001 transitions. [2024-11-18 14:33:03,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:33:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 7774 states and 12001 transitions. [2024-11-18 14:33:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 14:33:03,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:03,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:03,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 14:33:03,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 14:33:03,564 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:03,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash -992661833, now seen corresponding path program 1 times [2024-11-18 14:33:03,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:03,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907822396] [2024-11-18 14:33:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:03,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:33:03,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:03,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907822396] [2024-11-18 14:33:03,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907822396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:03,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672368387] [2024-11-18 14:33:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:03,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:03,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:03,648 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:03,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 14:33:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:03,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:33:03,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:33:03,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:03,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672368387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:03,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:03,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:33:03,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063803514] [2024-11-18 14:33:03,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:03,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:33:03,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:03,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:33:03,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:33:03,846 INFO L87 Difference]: Start difference. First operand 7774 states and 12001 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:33:04,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:04,530 INFO L93 Difference]: Finished difference Result 15082 states and 22658 transitions. [2024-11-18 14:33:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:33:04,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 113 [2024-11-18 14:33:04,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:04,585 INFO L225 Difference]: With dead ends: 15082 [2024-11-18 14:33:04,585 INFO L226 Difference]: Without dead ends: 7922 [2024-11-18 14:33:04,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:33:04,611 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 194 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:04,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 650 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:33:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7922 states. [2024-11-18 14:33:05,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7922 to 7918. [2024-11-18 14:33:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7918 states, 6469 states have (on average 1.2916988715411966) internal successors, (8356), 6788 states have internal predecessors, (8356), 721 states have call successors, (721), 377 states have call predecessors, (721), 727 states have return successors, (2680), 816 states have call predecessors, (2680), 721 states have call successors, (2680) [2024-11-18 14:33:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7918 states to 7918 states and 11757 transitions. [2024-11-18 14:33:05,299 INFO L78 Accepts]: Start accepts. Automaton has 7918 states and 11757 transitions. Word has length 113 [2024-11-18 14:33:05,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:05,300 INFO L471 AbstractCegarLoop]: Abstraction has 7918 states and 11757 transitions. [2024-11-18 14:33:05,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:33:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7918 states and 11757 transitions. [2024-11-18 14:33:05,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 14:33:05,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:05,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:05,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-18 14:33:05,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:05,537 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:05,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:05,537 INFO L85 PathProgramCache]: Analyzing trace with hash -38721675, now seen corresponding path program 1 times [2024-11-18 14:33:05,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:05,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260265404] [2024-11-18 14:33:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:05,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:33:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260265404] [2024-11-18 14:33:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260265404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084701434] [2024-11-18 14:33:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:05,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:05,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:05,617 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:05,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 14:33:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:05,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 14:33:05,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:33:05,772 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:05,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084701434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:05,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:05,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-18 14:33:05,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160429197] [2024-11-18 14:33:05,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:05,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:33:05,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:05,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:33:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:33:05,775 INFO L87 Difference]: Start difference. First operand 7918 states and 11757 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:33:06,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:06,417 INFO L93 Difference]: Finished difference Result 16338 states and 24119 transitions. [2024-11-18 14:33:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:33:06,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 113 [2024-11-18 14:33:06,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:06,469 INFO L225 Difference]: With dead ends: 16338 [2024-11-18 14:33:06,469 INFO L226 Difference]: Without dead ends: 8782 [2024-11-18 14:33:06,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:33:06,494 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 78 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:06,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 334 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:33:06,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8782 states. [2024-11-18 14:33:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8782 to 7918. [2024-11-18 14:33:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7918 states, 6469 states have (on average 1.2904622043592517) internal successors, (8348), 6788 states have internal predecessors, (8348), 721 states have call successors, (721), 377 states have call predecessors, (721), 727 states have return successors, (2680), 816 states have call predecessors, (2680), 721 states have call successors, (2680) [2024-11-18 14:33:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7918 states to 7918 states and 11749 transitions. [2024-11-18 14:33:07,024 INFO L78 Accepts]: Start accepts. Automaton has 7918 states and 11749 transitions. Word has length 113 [2024-11-18 14:33:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:07,024 INFO L471 AbstractCegarLoop]: Abstraction has 7918 states and 11749 transitions. [2024-11-18 14:33:07,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:33:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 7918 states and 11749 transitions. [2024-11-18 14:33:07,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 14:33:07,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:07,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:07,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-18 14:33:07,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:07,250 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:07,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:07,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1693209122, now seen corresponding path program 1 times [2024-11-18 14:33:07,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:07,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652090119] [2024-11-18 14:33:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:07,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:33:07,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652090119] [2024-11-18 14:33:07,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652090119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818055800] [2024-11-18 14:33:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:07,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:07,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:07,317 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:07,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 14:33:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:07,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:33:07,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:33:07,450 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:07,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818055800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:07,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:07,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:33:07,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940675236] [2024-11-18 14:33:07,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:07,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:33:07,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:07,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:33:07,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:33:07,452 INFO L87 Difference]: Start difference. First operand 7918 states and 11749 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:33:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:07,933 INFO L93 Difference]: Finished difference Result 16238 states and 24098 transitions. [2024-11-18 14:33:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:33:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2024-11-18 14:33:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:07,987 INFO L225 Difference]: With dead ends: 16238 [2024-11-18 14:33:07,987 INFO L226 Difference]: Without dead ends: 8918 [2024-11-18 14:33:08,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:33:08,015 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 23 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:08,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 281 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:33:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8918 states. [2024-11-18 14:33:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8918 to 8918. [2024-11-18 14:33:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8918 states, 7145 states have (on average 1.2717984604618615) internal successors, (9087), 7464 states have internal predecessors, (9087), 937 states have call successors, (937), 485 states have call predecessors, (937), 835 states have return successors, (3216), 1032 states have call predecessors, (3216), 937 states have call successors, (3216) [2024-11-18 14:33:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8918 states to 8918 states and 13240 transitions. [2024-11-18 14:33:08,867 INFO L78 Accepts]: Start accepts. Automaton has 8918 states and 13240 transitions. Word has length 116 [2024-11-18 14:33:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:08,867 INFO L471 AbstractCegarLoop]: Abstraction has 8918 states and 13240 transitions. [2024-11-18 14:33:08,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:33:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 8918 states and 13240 transitions. [2024-11-18 14:33:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 14:33:08,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:08,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:08,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-18 14:33:09,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:09,102 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:09,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash -265365664, now seen corresponding path program 1 times [2024-11-18 14:33:09,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:09,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115590004] [2024-11-18 14:33:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:09,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:33:09,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:09,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115590004] [2024-11-18 14:33:09,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115590004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:09,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392557796] [2024-11-18 14:33:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:09,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:09,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:09,198 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:09,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 14:33:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:09,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:33:09,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:33:09,389 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:09,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392557796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:09,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:09,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:33:09,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506982121] [2024-11-18 14:33:09,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:09,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:33:09,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:33:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:33:09,391 INFO L87 Difference]: Start difference. First operand 8918 states and 13240 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:33:10,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:10,076 INFO L93 Difference]: Finished difference Result 17280 states and 24901 transitions. [2024-11-18 14:33:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:33:10,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2024-11-18 14:33:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:10,139 INFO L225 Difference]: With dead ends: 17280 [2024-11-18 14:33:10,139 INFO L226 Difference]: Without dead ends: 9084 [2024-11-18 14:33:10,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:33:10,171 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 189 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:10,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 620 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:33:10,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9084 states. [2024-11-18 14:33:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9084 to 9080. [2024-11-18 14:33:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9080 states, 7253 states have (on average 1.2596167103267613) internal successors, (9136), 7626 states have internal predecessors, (9136), 937 states have call successors, (937), 485 states have call predecessors, (937), 889 states have return successors, (2920), 1032 states have call predecessors, (2920), 937 states have call successors, (2920) [2024-11-18 14:33:10,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9080 states to 9080 states and 12993 transitions. [2024-11-18 14:33:10,965 INFO L78 Accepts]: Start accepts. Automaton has 9080 states and 12993 transitions. Word has length 116 [2024-11-18 14:33:10,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:10,965 INFO L471 AbstractCegarLoop]: Abstraction has 9080 states and 12993 transitions. [2024-11-18 14:33:10,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:33:10,966 INFO L276 IsEmpty]: Start isEmpty. Operand 9080 states and 12993 transitions. [2024-11-18 14:33:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 14:33:10,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:11,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:11,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-18 14:33:11,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-18 14:33:11,200 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:11,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1481519390, now seen corresponding path program 1 times [2024-11-18 14:33:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:11,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167988684] [2024-11-18 14:33:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:11,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:33:11,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167988684] [2024-11-18 14:33:11,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167988684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239128476] [2024-11-18 14:33:11,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:11,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:11,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:11,285 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:11,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 14:33:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:11,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 14:33:11,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:33:11,552 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:11,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239128476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:11,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:11,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-18 14:33:11,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552332355] [2024-11-18 14:33:11,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:11,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:33:11,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:11,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:33:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:33:11,556 INFO L87 Difference]: Start difference. First operand 9080 states and 12993 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:33:12,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:12,214 INFO L93 Difference]: Finished difference Result 13091 states and 18408 transitions. [2024-11-18 14:33:12,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:33:12,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 116 [2024-11-18 14:33:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:12,279 INFO L225 Difference]: With dead ends: 13091 [2024-11-18 14:33:12,279 INFO L226 Difference]: Without dead ends: 13087 [2024-11-18 14:33:12,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:33:12,290 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 171 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:12,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 258 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:33:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13087 states. [2024-11-18 14:33:12,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13087 to 13039. [2024-11-18 14:33:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13039 states, 10550 states have (on average 1.2555450236966825) internal successors, (13246), 11053 states have internal predecessors, (13246), 1211 states have call successors, (1211), 727 states have call predecessors, (1211), 1277 states have return successors, (3884), 1354 states have call predecessors, (3884), 1211 states have call successors, (3884) [2024-11-18 14:33:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13039 states to 13039 states and 18341 transitions. [2024-11-18 14:33:12,988 INFO L78 Accepts]: Start accepts. Automaton has 13039 states and 18341 transitions. Word has length 116 [2024-11-18 14:33:12,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:12,988 INFO L471 AbstractCegarLoop]: Abstraction has 13039 states and 18341 transitions. [2024-11-18 14:33:12,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:33:12,989 INFO L276 IsEmpty]: Start isEmpty. Operand 13039 states and 18341 transitions. [2024-11-18 14:33:13,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-18 14:33:13,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:13,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:13,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-18 14:33:13,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-18 14:33:13,232 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:13,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:13,232 INFO L85 PathProgramCache]: Analyzing trace with hash 789408574, now seen corresponding path program 1 times [2024-11-18 14:33:13,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:13,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57144277] [2024-11-18 14:33:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:13,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:33:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57144277] [2024-11-18 14:33:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57144277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230179802] [2024-11-18 14:33:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:13,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:13,315 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:13,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 14:33:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:13,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:33:13,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:33:13,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:33:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:33:13,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230179802] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:13,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:33:13,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-11-18 14:33:13,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014459355] [2024-11-18 14:33:13,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:13,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:33:13,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:13,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:33:13,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:33:13,752 INFO L87 Difference]: Start difference. First operand 13039 states and 18341 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:33:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:14,795 INFO L93 Difference]: Finished difference Result 37300 states and 52927 transitions. [2024-11-18 14:33:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:33:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 119 [2024-11-18 14:33:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:14,914 INFO L225 Difference]: With dead ends: 37300 [2024-11-18 14:33:14,914 INFO L226 Difference]: Without dead ends: 24371 [2024-11-18 14:33:14,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 231 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:33:14,965 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 166 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:14,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 359 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:33:14,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24371 states. [2024-11-18 14:33:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24371 to 23839. [2024-11-18 14:33:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23839 states, 19331 states have (on average 1.224871967306399) internal successors, (23678), 20451 states have internal predecessors, (23678), 1839 states have call successors, (1839), 1453 states have call predecessors, (1839), 2668 states have return successors, (6404), 1966 states have call predecessors, (6404), 1839 states have call successors, (6404) [2024-11-18 14:33:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23839 states to 23839 states and 31921 transitions. [2024-11-18 14:33:16,356 INFO L78 Accepts]: Start accepts. Automaton has 23839 states and 31921 transitions. Word has length 119 [2024-11-18 14:33:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:16,357 INFO L471 AbstractCegarLoop]: Abstraction has 23839 states and 31921 transitions. [2024-11-18 14:33:16,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:33:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 23839 states and 31921 transitions. [2024-11-18 14:33:16,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 14:33:16,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:16,378 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:16,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-18 14:33:16,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:16,578 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:16,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1598356374, now seen corresponding path program 1 times [2024-11-18 14:33:16,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:16,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104140555] [2024-11-18 14:33:16,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:16,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:33:16,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:16,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104140555] [2024-11-18 14:33:16,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104140555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:16,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199653149] [2024-11-18 14:33:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:16,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:16,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:16,681 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:16,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 14:33:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:16,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:33:16,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:33:16,807 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:16,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199653149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:16,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:33:16,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735832798] [2024-11-18 14:33:16,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:16,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:33:16,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:16,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:33:16,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:33:16,809 INFO L87 Difference]: Start difference. First operand 23839 states and 31921 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:33:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:17,888 INFO L93 Difference]: Finished difference Result 47438 states and 63375 transitions. [2024-11-18 14:33:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:33:17,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 134 [2024-11-18 14:33:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:17,985 INFO L225 Difference]: With dead ends: 47438 [2024-11-18 14:33:17,986 INFO L226 Difference]: Without dead ends: 23983 [2024-11-18 14:33:18,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:33:18,017 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:18,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:33:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23983 states. [2024-11-18 14:33:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23983 to 23983. [2024-11-18 14:33:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23983 states, 19475 states have (on average 1.223209242618742) internal successors, (23822), 20595 states have internal predecessors, (23822), 1839 states have call successors, (1839), 1453 states have call predecessors, (1839), 2668 states have return successors, (6404), 1966 states have call predecessors, (6404), 1839 states have call successors, (6404) [2024-11-18 14:33:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23983 states to 23983 states and 32065 transitions. [2024-11-18 14:33:19,785 INFO L78 Accepts]: Start accepts. Automaton has 23983 states and 32065 transitions. Word has length 134 [2024-11-18 14:33:19,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:19,786 INFO L471 AbstractCegarLoop]: Abstraction has 23983 states and 32065 transitions. [2024-11-18 14:33:19,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:33:19,786 INFO L276 IsEmpty]: Start isEmpty. Operand 23983 states and 32065 transitions. [2024-11-18 14:33:19,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 14:33:19,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:19,805 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:19,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-18 14:33:20,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:20,006 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:20,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1387499683, now seen corresponding path program 1 times [2024-11-18 14:33:20,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:20,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427509750] [2024-11-18 14:33:20,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:20,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:33:20,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:20,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427509750] [2024-11-18 14:33:20,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427509750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:20,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6461390] [2024-11-18 14:33:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:20,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:20,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:20,098 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:20,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 14:33:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:20,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:33:20,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:33:20,212 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:20,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6461390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:20,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:20,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:33:20,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922638709] [2024-11-18 14:33:20,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:20,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:33:20,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:33:20,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:33:20,214 INFO L87 Difference]: Start difference. First operand 23983 states and 32065 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:33:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:21,272 INFO L93 Difference]: Finished difference Result 47582 states and 63375 transitions. [2024-11-18 14:33:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:33:21,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 135 [2024-11-18 14:33:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:21,364 INFO L225 Difference]: With dead ends: 47582 [2024-11-18 14:33:21,364 INFO L226 Difference]: Without dead ends: 23983 [2024-11-18 14:33:21,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:33:21,406 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 3 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:21,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 268 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:33:21,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23983 states. [2024-11-18 14:33:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23983 to 23983. [2024-11-18 14:33:22,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23983 states, 19475 states have (on average 1.2158151476251604) internal successors, (23678), 20595 states have internal predecessors, (23678), 1839 states have call successors, (1839), 1453 states have call predecessors, (1839), 2668 states have return successors, (6404), 1966 states have call predecessors, (6404), 1839 states have call successors, (6404) [2024-11-18 14:33:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23983 states to 23983 states and 31921 transitions. [2024-11-18 14:33:22,946 INFO L78 Accepts]: Start accepts. Automaton has 23983 states and 31921 transitions. Word has length 135 [2024-11-18 14:33:22,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:22,946 INFO L471 AbstractCegarLoop]: Abstraction has 23983 states and 31921 transitions. [2024-11-18 14:33:22,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:33:22,947 INFO L276 IsEmpty]: Start isEmpty. Operand 23983 states and 31921 transitions. [2024-11-18 14:33:22,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 14:33:22,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:22,966 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:22,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-18 14:33:23,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 14:33:23,167 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:23,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash 384347052, now seen corresponding path program 1 times [2024-11-18 14:33:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262252626] [2024-11-18 14:33:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:23,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:33:23,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:23,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262252626] [2024-11-18 14:33:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262252626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:23,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392342582] [2024-11-18 14:33:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:23,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:23,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:23,260 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:23,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 14:33:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:23,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:33:23,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:33:23,508 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:23,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392342582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:23,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:23,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-18 14:33:23,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873580610] [2024-11-18 14:33:23,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:23,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:33:23,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:23,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:33:23,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:33:23,510 INFO L87 Difference]: Start difference. First operand 23983 states and 31921 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 14:33:24,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:24,738 INFO L93 Difference]: Finished difference Result 47582 states and 63087 transitions. [2024-11-18 14:33:24,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:33:24,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 135 [2024-11-18 14:33:24,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:24,839 INFO L225 Difference]: With dead ends: 47582 [2024-11-18 14:33:24,840 INFO L226 Difference]: Without dead ends: 23983 [2024-11-18 14:33:24,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:33:24,874 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 120 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:24,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 145 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:33:24,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23983 states. [2024-11-18 14:33:26,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23983 to 23983. [2024-11-18 14:33:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23983 states, 19475 states have (on average 1.2133504492939666) internal successors, (23630), 20595 states have internal predecessors, (23630), 1839 states have call successors, (1839), 1453 states have call predecessors, (1839), 2668 states have return successors, (6404), 1966 states have call predecessors, (6404), 1839 states have call successors, (6404) [2024-11-18 14:33:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23983 states to 23983 states and 31873 transitions. [2024-11-18 14:33:26,613 INFO L78 Accepts]: Start accepts. Automaton has 23983 states and 31873 transitions. Word has length 135 [2024-11-18 14:33:26,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:26,614 INFO L471 AbstractCegarLoop]: Abstraction has 23983 states and 31873 transitions. [2024-11-18 14:33:26,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 14:33:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 23983 states and 31873 transitions. [2024-11-18 14:33:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-18 14:33:26,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:26,641 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:33:26,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-18 14:33:26,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 14:33:26,846 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:26,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1063226239, now seen corresponding path program 1 times [2024-11-18 14:33:26,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:26,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74254908] [2024-11-18 14:33:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:26,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:33:26,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:26,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74254908] [2024-11-18 14:33:26,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74254908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:33:26,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960227047] [2024-11-18 14:33:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:26,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:33:26,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:33:26,991 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:33:26,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 14:33:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:27,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:33:27,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:33:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:33:27,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:33:27,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960227047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:27,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:33:27,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-18 14:33:27,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710810353] [2024-11-18 14:33:27,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:27,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:33:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:27,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:33:27,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:33:27,146 INFO L87 Difference]: Start difference. First operand 23983 states and 31873 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:33:28,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:28,611 INFO L93 Difference]: Finished difference Result 48158 states and 63807 transitions. [2024-11-18 14:33:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:33:28,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 136 [2024-11-18 14:33:28,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:28,733 INFO L225 Difference]: With dead ends: 48158 [2024-11-18 14:33:28,733 INFO L226 Difference]: Without dead ends: 24559 [2024-11-18 14:33:28,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:33:28,787 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 10 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:28,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:33:28,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24559 states.