./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label33.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/eca-rers2012/Problem17_label33.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 f1d6c7224567b6057eecb8e0076a48aebc20a409238cb7be9c0543149a96c59f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:51:17,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:51:17,856 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:51:17,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:51:17,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:51:17,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:51:17,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:51:17,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:51:17,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:51:17,892 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:51:17,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:51:17,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:51:17,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:51:17,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:51:17,893 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:51:17,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:51:17,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:51:17,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:51:17,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:51:17,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:51:17,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:51:17,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:51:17,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:51:17,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:51:17,896 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:51:17,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:51:17,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:51:17,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:51:17,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:51:17,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:51:17,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:51:17,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:51:17,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:51:17,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:51:17,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:51:17,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:51:17,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:51:17,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:51:17,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:51:17,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:51:17,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:51:17,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:51:17,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1d6c7224567b6057eecb8e0076a48aebc20a409238cb7be9c0543149a96c59f [2024-11-18 10:51:18,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:51:18,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:51:18,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:51:18,157 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:51:18,157 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:51:18,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label33.c [2024-11-18 10:51:19,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:51:19,870 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:51:19,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label33.c [2024-11-18 10:51:19,893 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923e89b7c/b9a81a046301482e92121ff6ccb619ef/FLAG202efc394 [2024-11-18 10:51:20,093 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923e89b7c/b9a81a046301482e92121ff6ccb619ef [2024-11-18 10:51:20,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:51:20,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:51:20,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:51:20,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:51:20,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:51:20,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:51:20" (1/1) ... [2024-11-18 10:51:20,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dfbd1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:20, skipping insertion in model container [2024-11-18 10:51:20,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:51:20" (1/1) ... [2024-11-18 10:51:20,185 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:51:20,443 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/eca-rers2012/Problem17_label33.c[2518,2531] [2024-11-18 10:51:20,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:51:20,859 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:51:20,881 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/eca-rers2012/Problem17_label33.c[2518,2531] [2024-11-18 10:51:21,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:51:21,194 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:51:21,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21 WrapperNode [2024-11-18 10:51:21,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:51:21,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:51:21,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:51:21,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:51:21,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,391 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-18 10:51:21,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:51:21,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:51:21,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:51:21,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:51:21,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,516 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,626 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 10:51:21,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:51:21,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:51:21,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:51:21,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:51:21,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (1/1) ... [2024-11-18 10:51:21,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:51:21,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:51:21,798 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 10:51:21,802 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 10:51:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:51:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:51:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:51:21,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:51:21,946 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:51:21,949 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:51:24,385 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-18 10:51:24,386 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:51:24,413 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:51:24,414 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:51:24,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:51:24 BoogieIcfgContainer [2024-11-18 10:51:24,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:51:24,416 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:51:24,416 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:51:24,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:51:24,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:51:20" (1/3) ... [2024-11-18 10:51:24,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9b0277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:51:24, skipping insertion in model container [2024-11-18 10:51:24,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:21" (2/3) ... [2024-11-18 10:51:24,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9b0277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:51:24, skipping insertion in model container [2024-11-18 10:51:24,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:51:24" (3/3) ... [2024-11-18 10:51:24,422 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label33.c [2024-11-18 10:51:24,435 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:51:24,435 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:51:24,507 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:51:24,515 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;@2e5fe9a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:51:24,515 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:51:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:24,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 10:51:24,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:24,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:24,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:24,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1657508526, now seen corresponding path program 1 times [2024-11-18 10:51:24,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:24,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460975168] [2024-11-18 10:51:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:24,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:24,753 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 10:51:24,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460975168] [2024-11-18 10:51:24,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460975168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:24,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:24,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:51:24,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835959522] [2024-11-18 10:51:24,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:24,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:24,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:24,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:24,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:24,783 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:26,851 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2024-11-18 10:51:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:26,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-18 10:51:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:26,866 INFO L225 Difference]: With dead ends: 1667 [2024-11-18 10:51:26,866 INFO L226 Difference]: Without dead ends: 998 [2024-11-18 10:51:26,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:26,872 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 529 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:26,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 10:51:26,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-18 10:51:26,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2024-11-18 10:51:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2024-11-18 10:51:26,949 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 16 [2024-11-18 10:51:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:26,949 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2024-11-18 10:51:26,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2024-11-18 10:51:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-18 10:51:26,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:26,951 INFO L215 NwaCegarLoop]: trace histogram [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 10:51:26,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:51:26,951 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:26,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash 38833391, now seen corresponding path program 1 times [2024-11-18 10:51:26,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:26,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448214336] [2024-11-18 10:51:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:26,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:51:27,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:27,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448214336] [2024-11-18 10:51:27,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448214336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:27,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:27,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:51:27,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732090025] [2024-11-18 10:51:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:27,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:27,136 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:29,024 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2024-11-18 10:51:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:29,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-18 10:51:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:29,031 INFO L225 Difference]: With dead ends: 2841 [2024-11-18 10:51:29,031 INFO L226 Difference]: Without dead ends: 1861 [2024-11-18 10:51:29,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:29,034 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:29,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:51:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-18 10:51:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2024-11-18 10:51:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2024-11-18 10:51:29,063 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 81 [2024-11-18 10:51:29,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:29,063 INFO L471 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2024-11-18 10:51:29,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2024-11-18 10:51:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-18 10:51:29,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:29,066 INFO L215 NwaCegarLoop]: trace histogram [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 10:51:29,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:51:29,066 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:29,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:29,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1101270044, now seen corresponding path program 1 times [2024-11-18 10:51:29,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:29,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675949523] [2024-11-18 10:51:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:29,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:51:29,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:29,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675949523] [2024-11-18 10:51:29,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675949523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:29,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:29,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:51:29,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497164033] [2024-11-18 10:51:29,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:29,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:29,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:29,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:29,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:29,399 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:31,346 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2024-11-18 10:51:31,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:31,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-18 10:51:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:31,359 INFO L225 Difference]: With dead ends: 4591 [2024-11-18 10:51:31,359 INFO L226 Difference]: Without dead ends: 2736 [2024-11-18 10:51:31,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:31,365 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:31,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:51:31,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2024-11-18 10:51:31,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2024-11-18 10:51:31,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2024-11-18 10:51:31,401 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 121 [2024-11-18 10:51:31,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:31,403 INFO L471 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2024-11-18 10:51:31,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:31,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2024-11-18 10:51:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 10:51:31,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:31,410 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-18 10:51:31,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:51:31,411 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:31,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:31,411 INFO L85 PathProgramCache]: Analyzing trace with hash 582217397, now seen corresponding path program 1 times [2024-11-18 10:51:31,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:31,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645653756] [2024-11-18 10:51:31,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:31,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:51:31,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:31,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645653756] [2024-11-18 10:51:31,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645653756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:31,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:31,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:51:31,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600024420] [2024-11-18 10:51:31,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:31,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:31,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:31,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:31,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:31,532 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:32,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:32,980 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2024-11-18 10:51:32,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:32,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-11-18 10:51:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:32,991 INFO L225 Difference]: With dead ends: 6709 [2024-11-18 10:51:32,992 INFO L226 Difference]: Without dead ends: 3995 [2024-11-18 10:51:32,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:32,998 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:32,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:51:33,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2024-11-18 10:51:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2024-11-18 10:51:33,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2024-11-18 10:51:33,040 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 127 [2024-11-18 10:51:33,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:33,042 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2024-11-18 10:51:33,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2024-11-18 10:51:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-18 10:51:33,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:33,046 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:51:33,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:51:33,046 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:33,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1582736769, now seen corresponding path program 1 times [2024-11-18 10:51:33,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:33,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145359523] [2024-11-18 10:51:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:33,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:51:33,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:33,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145359523] [2024-11-18 10:51:33,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145359523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:33,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:33,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 10:51:33,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047023329] [2024-11-18 10:51:33,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:33,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 10:51:33,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 10:51:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:51:33,374 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:35,212 INFO L93 Difference]: Finished difference Result 8005 states and 10508 transitions. [2024-11-18 10:51:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:51:35,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-11-18 10:51:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:35,224 INFO L225 Difference]: With dead ends: 8005 [2024-11-18 10:51:35,224 INFO L226 Difference]: Without dead ends: 4865 [2024-11-18 10:51:35,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:51:35,228 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1089 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:35,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 894 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:51:35,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2024-11-18 10:51:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4852. [2024-11-18 10:51:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2024-11-18 10:51:35,307 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 164 [2024-11-18 10:51:35,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:35,308 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2024-11-18 10:51:35,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:35,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2024-11-18 10:51:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 10:51:35,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:35,309 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:51:35,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:51:35,310 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:35,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash -387388432, now seen corresponding path program 1 times [2024-11-18 10:51:35,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:35,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074035051] [2024-11-18 10:51:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:35,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 10:51:35,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:35,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074035051] [2024-11-18 10:51:35,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074035051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:35,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:35,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:35,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848383732] [2024-11-18 10:51:35,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:35,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:35,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:35,400 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:37,174 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2024-11-18 10:51:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:37,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-18 10:51:37,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:37,195 INFO L225 Difference]: With dead ends: 12249 [2024-11-18 10:51:37,195 INFO L226 Difference]: Without dead ends: 7399 [2024-11-18 10:51:37,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:37,201 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 432 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:37,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 10:51:37,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2024-11-18 10:51:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2024-11-18 10:51:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2024-11-18 10:51:37,268 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 170 [2024-11-18 10:51:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:37,269 INFO L471 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2024-11-18 10:51:37,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2024-11-18 10:51:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-18 10:51:37,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:37,271 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:51:37,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:51:37,271 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:37,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:37,272 INFO L85 PathProgramCache]: Analyzing trace with hash 591527748, now seen corresponding path program 1 times [2024-11-18 10:51:37,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:37,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648550465] [2024-11-18 10:51:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:37,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:51:37,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:37,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648550465] [2024-11-18 10:51:37,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648550465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:37,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:37,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163072778] [2024-11-18 10:51:37,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:37,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:37,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:37,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:37,386 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:38,932 INFO L93 Difference]: Finished difference Result 13481 states and 17131 transitions. [2024-11-18 10:51:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:38,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2024-11-18 10:51:38,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:38,952 INFO L225 Difference]: With dead ends: 13481 [2024-11-18 10:51:38,954 INFO L226 Difference]: Without dead ends: 8657 [2024-11-18 10:51:38,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:38,961 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 468 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:38,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 483 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:51:38,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8657 states. [2024-11-18 10:51:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8657 to 7378. [2024-11-18 10:51:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7378 states, 7377 states have (on average 1.2479327639962043) internal successors, (9206), 7377 states have internal predecessors, (9206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 9206 transitions. [2024-11-18 10:51:39,049 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 9206 transitions. Word has length 183 [2024-11-18 10:51:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:39,049 INFO L471 AbstractCegarLoop]: Abstraction has 7378 states and 9206 transitions. [2024-11-18 10:51:39,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 9206 transitions. [2024-11-18 10:51:39,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-18 10:51:39,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:39,051 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 10:51:39,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:51:39,052 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:39,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:39,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1880356032, now seen corresponding path program 1 times [2024-11-18 10:51:39,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:39,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85163622] [2024-11-18 10:51:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:39,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:51:39,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:39,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85163622] [2024-11-18 10:51:39,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85163622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:39,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:39,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:39,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555971306] [2024-11-18 10:51:39,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:39,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:39,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:39,254 INFO L87 Difference]: Start difference. First operand 7378 states and 9206 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:40,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:40,722 INFO L93 Difference]: Finished difference Result 19035 states and 23868 transitions. [2024-11-18 10:51:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:40,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2024-11-18 10:51:40,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:40,736 INFO L225 Difference]: With dead ends: 19035 [2024-11-18 10:51:40,736 INFO L226 Difference]: Without dead ends: 10807 [2024-11-18 10:51:40,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:40,743 INFO L432 NwaCegarLoop]: 821 mSDtfsCounter, 370 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:40,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 896 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:51:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10807 states. [2024-11-18 10:51:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10807 to 10799. [2024-11-18 10:51:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10799 states, 10798 states have (on average 1.1793850713095018) internal successors, (12735), 10798 states have internal predecessors, (12735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10799 states to 10799 states and 12735 transitions. [2024-11-18 10:51:40,835 INFO L78 Accepts]: Start accepts. Automaton has 10799 states and 12735 transitions. Word has length 232 [2024-11-18 10:51:40,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:40,835 INFO L471 AbstractCegarLoop]: Abstraction has 10799 states and 12735 transitions. [2024-11-18 10:51:40,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:40,836 INFO L276 IsEmpty]: Start isEmpty. Operand 10799 states and 12735 transitions. [2024-11-18 10:51:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-18 10:51:40,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:40,842 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:40,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:51:40,842 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:40,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash -18097380, now seen corresponding path program 1 times [2024-11-18 10:51:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135653748] [2024-11-18 10:51:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:40,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 166 proven. 70 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 10:51:41,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:41,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135653748] [2024-11-18 10:51:41,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135653748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:51:41,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329558505] [2024-11-18 10:51:41,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:41,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:51:41,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:51:41,288 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 10:51:41,289 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 10:51:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:41,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:51:41,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:51:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 166 proven. 70 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 10:51:41,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:51:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 10:51:41,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329558505] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:51:41,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:51:41,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:51:41,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080398249] [2024-11-18 10:51:41,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:41,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:51:41,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:41,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:51:41,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:51:41,901 INFO L87 Difference]: Start difference. First operand 10799 states and 12735 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:44,599 INFO L93 Difference]: Finished difference Result 35677 states and 42172 transitions. [2024-11-18 10:51:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:51:44,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2024-11-18 10:51:44,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:44,628 INFO L225 Difference]: With dead ends: 35677 [2024-11-18 10:51:44,628 INFO L226 Difference]: Without dead ends: 24019 [2024-11-18 10:51:44,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:51:44,639 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 1085 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 1254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 3522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1254 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:44,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 144 Invalid, 3522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1254 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 10:51:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24019 states. [2024-11-18 10:51:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24019 to 22742. [2024-11-18 10:51:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22742 states, 22741 states have (on average 1.1553141902291015) internal successors, (26273), 22741 states have internal predecessors, (26273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22742 states to 22742 states and 26273 transitions. [2024-11-18 10:51:44,847 INFO L78 Accepts]: Start accepts. Automaton has 22742 states and 26273 transitions. Word has length 240 [2024-11-18 10:51:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:44,848 INFO L471 AbstractCegarLoop]: Abstraction has 22742 states and 26273 transitions. [2024-11-18 10:51:44,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 22742 states and 26273 transitions. [2024-11-18 10:51:44,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-18 10:51:44,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:44,850 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:44,866 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 10:51:45,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:51:45,052 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:45,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:45,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1861634320, now seen corresponding path program 1 times [2024-11-18 10:51:45,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:45,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446530728] [2024-11-18 10:51:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:45,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 10:51:45,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:45,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446530728] [2024-11-18 10:51:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446530728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:45,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:45,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:45,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069810568] [2024-11-18 10:51:45,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:45,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:45,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:45,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:45,192 INFO L87 Difference]: Start difference. First operand 22742 states and 26273 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:46,662 INFO L93 Difference]: Finished difference Result 50583 states and 58592 transitions. [2024-11-18 10:51:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:46,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-11-18 10:51:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:46,700 INFO L225 Difference]: With dead ends: 50583 [2024-11-18 10:51:46,700 INFO L226 Difference]: Without dead ends: 27416 [2024-11-18 10:51:46,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:46,724 INFO L432 NwaCegarLoop]: 775 mSDtfsCounter, 378 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:46,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 842 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:51:46,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27416 states. [2024-11-18 10:51:46,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27416 to 27416. [2024-11-18 10:51:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27416 states, 27415 states have (on average 1.1312055444099944) internal successors, (31012), 27415 states have internal predecessors, (31012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27416 states to 27416 states and 31012 transitions. [2024-11-18 10:51:46,999 INFO L78 Accepts]: Start accepts. Automaton has 27416 states and 31012 transitions. Word has length 253 [2024-11-18 10:51:46,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:46,999 INFO L471 AbstractCegarLoop]: Abstraction has 27416 states and 31012 transitions. [2024-11-18 10:51:46,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 27416 states and 31012 transitions. [2024-11-18 10:51:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-18 10:51:47,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:47,007 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:51:47,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:51:47,007 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:47,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:47,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1700470054, now seen corresponding path program 1 times [2024-11-18 10:51:47,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:47,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918482430] [2024-11-18 10:51:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:47,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 188 proven. 78 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 10:51:47,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:47,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918482430] [2024-11-18 10:51:47,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918482430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:51:47,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463493742] [2024-11-18 10:51:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:47,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:51:47,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:51:47,311 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 10:51:47,313 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 10:51:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:47,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:51:47,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:51:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 188 proven. 78 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 10:51:47,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:51:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 10:51:47,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463493742] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:51:47,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:51:47,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:51:47,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271111494] [2024-11-18 10:51:47,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:47,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:51:47,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:47,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:51:47,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:51:47,814 INFO L87 Difference]: Start difference. First operand 27416 states and 31012 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:50,082 INFO L93 Difference]: Finished difference Result 68481 states and 77437 transitions. [2024-11-18 10:51:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:51:50,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2024-11-18 10:51:50,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:50,122 INFO L225 Difference]: With dead ends: 68481 [2024-11-18 10:51:50,122 INFO L226 Difference]: Without dead ends: 40640 [2024-11-18 10:51:50,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:51:50,140 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 874 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:50,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 180 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:51:50,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40640 states. [2024-11-18 10:51:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40640 to 38512. [2024-11-18 10:51:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38512 states, 38511 states have (on average 1.1338578587935915) internal successors, (43666), 38511 states have internal predecessors, (43666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38512 states to 38512 states and 43666 transitions. [2024-11-18 10:51:50,475 INFO L78 Accepts]: Start accepts. Automaton has 38512 states and 43666 transitions. Word has length 311 [2024-11-18 10:51:50,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:50,476 INFO L471 AbstractCegarLoop]: Abstraction has 38512 states and 43666 transitions. [2024-11-18 10:51:50,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:50,476 INFO L276 IsEmpty]: Start isEmpty. Operand 38512 states and 43666 transitions. [2024-11-18 10:51:50,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-18 10:51:50,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:50,482 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:51:50,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 10:51:50,682 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,SelfDestructingSolverStorable10 [2024-11-18 10:51:50,683 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:50,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:50,683 INFO L85 PathProgramCache]: Analyzing trace with hash 873519532, now seen corresponding path program 1 times [2024-11-18 10:51:50,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:50,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780501886] [2024-11-18 10:51:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:50,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-18 10:51:50,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:50,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780501886] [2024-11-18 10:51:50,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780501886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:50,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:50,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:50,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637167438] [2024-11-18 10:51:50,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:50,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:50,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:50,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:50,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:50,930 INFO L87 Difference]: Start difference. First operand 38512 states and 43666 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:52,301 INFO L93 Difference]: Finished difference Result 89785 states and 102267 transitions. [2024-11-18 10:51:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:52,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 411 [2024-11-18 10:51:52,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:52,355 INFO L225 Difference]: With dead ends: 89785 [2024-11-18 10:51:52,355 INFO L226 Difference]: Without dead ends: 49573 [2024-11-18 10:51:52,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:52,383 INFO L432 NwaCegarLoop]: 728 mSDtfsCounter, 338 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:52,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 787 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:51:52,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49573 states. [2024-11-18 10:51:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49573 to 37619. [2024-11-18 10:51:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37619 states, 37618 states have (on average 1.132729012706683) internal successors, (42611), 37618 states have internal predecessors, (42611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37619 states to 37619 states and 42611 transitions. [2024-11-18 10:51:52,868 INFO L78 Accepts]: Start accepts. Automaton has 37619 states and 42611 transitions. Word has length 411 [2024-11-18 10:51:52,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:52,868 INFO L471 AbstractCegarLoop]: Abstraction has 37619 states and 42611 transitions. [2024-11-18 10:51:52,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 37619 states and 42611 transitions. [2024-11-18 10:51:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-18 10:51:52,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:52,874 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-18 10:51:52,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:51:52,875 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:52,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash -826212447, now seen corresponding path program 1 times [2024-11-18 10:51:52,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:52,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322540090] [2024-11-18 10:51:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:52,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-18 10:51:53,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:53,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322540090] [2024-11-18 10:51:53,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322540090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:53,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:53,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:53,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230791531] [2024-11-18 10:51:53,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:53,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:53,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:53,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:53,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:53,126 INFO L87 Difference]: Start difference. First operand 37619 states and 42611 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:54,701 INFO L93 Difference]: Finished difference Result 87614 states and 98821 transitions. [2024-11-18 10:51:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:54,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 412 [2024-11-18 10:51:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:54,751 INFO L225 Difference]: With dead ends: 87614 [2024-11-18 10:51:54,751 INFO L226 Difference]: Without dead ends: 49571 [2024-11-18 10:51:54,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:54,775 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 476 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:54,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 348 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:51:54,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49571 states. [2024-11-18 10:51:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49571 to 38042. [2024-11-18 10:51:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38042 states, 38041 states have (on average 1.1311216844983045) internal successors, (43029), 38041 states have internal predecessors, (43029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38042 states to 38042 states and 43029 transitions. [2024-11-18 10:51:55,329 INFO L78 Accepts]: Start accepts. Automaton has 38042 states and 43029 transitions. Word has length 412 [2024-11-18 10:51:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:55,330 INFO L471 AbstractCegarLoop]: Abstraction has 38042 states and 43029 transitions. [2024-11-18 10:51:55,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:55,330 INFO L276 IsEmpty]: Start isEmpty. Operand 38042 states and 43029 transitions. [2024-11-18 10:51:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-18 10:51:55,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:55,338 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:51:55,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:51:55,339 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:55,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1921236114, now seen corresponding path program 1 times [2024-11-18 10:51:55,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:55,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519223948] [2024-11-18 10:51:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:55,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-18 10:51:55,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:55,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519223948] [2024-11-18 10:51:55,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519223948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:55,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:55,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:55,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108573076] [2024-11-18 10:51:55,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:55,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:55,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:55,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:55,614 INFO L87 Difference]: Start difference. First operand 38042 states and 43029 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:57,186 INFO L93 Difference]: Finished difference Result 90134 states and 101693 transitions. [2024-11-18 10:51:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:57,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 439 [2024-11-18 10:51:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:57,249 INFO L225 Difference]: With dead ends: 90134 [2024-11-18 10:51:57,249 INFO L226 Difference]: Without dead ends: 51668 [2024-11-18 10:51:57,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:57,279 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 489 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:57,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 299 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:51:57,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51668 states. [2024-11-18 10:51:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51668 to 38441. [2024-11-18 10:51:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38441 states, 38440 states have (on average 1.1205515088449531) internal successors, (43074), 38440 states have internal predecessors, (43074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:57,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38441 states to 38441 states and 43074 transitions. [2024-11-18 10:51:57,886 INFO L78 Accepts]: Start accepts. Automaton has 38441 states and 43074 transitions. Word has length 439 [2024-11-18 10:51:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:57,887 INFO L471 AbstractCegarLoop]: Abstraction has 38441 states and 43074 transitions. [2024-11-18 10:51:57,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:57,887 INFO L276 IsEmpty]: Start isEmpty. Operand 38441 states and 43074 transitions. [2024-11-18 10:51:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-18 10:51:57,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:57,895 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:57,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:51:57,896 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:57,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:57,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1085398361, now seen corresponding path program 1 times [2024-11-18 10:51:57,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:57,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013618795] [2024-11-18 10:51:57,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:57,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 296 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:51:58,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:58,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013618795] [2024-11-18 10:51:58,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013618795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:51:58,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499048022] [2024-11-18 10:51:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:58,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:51:58,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:51:58,636 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 10:51:58,637 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 10:51:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:58,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:51:58,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:51:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 214 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 10:51:59,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:51:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 214 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 10:51:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499048022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:51:59,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:51:59,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-18 10:51:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855164530] [2024-11-18 10:51:59,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:51:59,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 10:51:59,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:59,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 10:51:59,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:51:59,774 INFO L87 Difference]: Start difference. First operand 38441 states and 43074 transitions. Second operand has 9 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:09,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:09,220 INFO L93 Difference]: Finished difference Result 135679 states and 151025 transitions. [2024-11-18 10:52:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 10:52:09,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2024-11-18 10:52:09,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:09,312 INFO L225 Difference]: With dead ends: 135679 [2024-11-18 10:52:09,312 INFO L226 Difference]: Without dead ends: 95537 [2024-11-18 10:52:09,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-18 10:52:09,336 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 7122 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12553 mSolverCounterSat, 2151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7122 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 14704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2151 IncrementalHoareTripleChecker+Valid, 12553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:09,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7122 Valid, 477 Invalid, 14704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2151 Valid, 12553 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2024-11-18 10:52:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95537 states. [2024-11-18 10:52:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95537 to 87867. [2024-11-18 10:52:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87867 states, 87866 states have (on average 1.0985136457787996) internal successors, (96522), 87866 states have internal predecessors, (96522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87867 states to 87867 states and 96522 transitions. [2024-11-18 10:52:10,249 INFO L78 Accepts]: Start accepts. Automaton has 87867 states and 96522 transitions. Word has length 451 [2024-11-18 10:52:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:10,249 INFO L471 AbstractCegarLoop]: Abstraction has 87867 states and 96522 transitions. [2024-11-18 10:52:10,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 87867 states and 96522 transitions. [2024-11-18 10:52:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-18 10:52:10,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:10,254 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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 10:52:10,267 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 10:52:10,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:52:10,455 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:10,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:10,456 INFO L85 PathProgramCache]: Analyzing trace with hash 503973094, now seen corresponding path program 1 times [2024-11-18 10:52:10,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:10,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751977203] [2024-11-18 10:52:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:10,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-18 10:52:11,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:11,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751977203] [2024-11-18 10:52:11,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751977203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:11,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:11,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:52:11,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445856327] [2024-11-18 10:52:11,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:11,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:52:11,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:52:11,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:11,321 INFO L87 Difference]: Start difference. First operand 87867 states and 96522 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:13,963 INFO L93 Difference]: Finished difference Result 209401 states and 229452 transitions. [2024-11-18 10:52:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:52:13,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 460 [2024-11-18 10:52:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:14,087 INFO L225 Difference]: With dead ends: 209401 [2024-11-18 10:52:14,087 INFO L226 Difference]: Without dead ends: 116425 [2024-11-18 10:52:14,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:14,108 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 784 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:14,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 248 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 10:52:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116425 states. [2024-11-18 10:52:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116425 to 110852. [2024-11-18 10:52:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110852 states, 110851 states have (on average 1.0950104193917962) internal successors, (121383), 110851 states have internal predecessors, (121383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:15,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110852 states to 110852 states and 121383 transitions. [2024-11-18 10:52:15,696 INFO L78 Accepts]: Start accepts. Automaton has 110852 states and 121383 transitions. Word has length 460 [2024-11-18 10:52:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:15,702 INFO L471 AbstractCegarLoop]: Abstraction has 110852 states and 121383 transitions. [2024-11-18 10:52:15,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 110852 states and 121383 transitions. [2024-11-18 10:52:15,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-18 10:52:15,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:15,721 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:52:15,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:52:15,722 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:15,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:15,722 INFO L85 PathProgramCache]: Analyzing trace with hash 295544723, now seen corresponding path program 1 times [2024-11-18 10:52:15,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:15,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233719155] [2024-11-18 10:52:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:15,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:52:16,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:16,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233719155] [2024-11-18 10:52:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233719155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:16,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:16,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:52:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809088265] [2024-11-18 10:52:16,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:16,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:52:16,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:16,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:52:16,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:16,201 INFO L87 Difference]: Start difference. First operand 110852 states and 121383 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:18,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:18,605 INFO L93 Difference]: Finished difference Result 248113 states and 271708 transitions. [2024-11-18 10:52:18,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:52:18,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 494 [2024-11-18 10:52:18,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:18,750 INFO L225 Difference]: With dead ends: 248113 [2024-11-18 10:52:18,750 INFO L226 Difference]: Without dead ends: 136411 [2024-11-18 10:52:18,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:18,984 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 969 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:18,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 251 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:52:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136411 states. [2024-11-18 10:52:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136411 to 116810. [2024-11-18 10:52:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116810 states, 116809 states have (on average 1.0999751731459049) internal successors, (128487), 116809 states have internal predecessors, (128487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:20,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116810 states to 116810 states and 128487 transitions. [2024-11-18 10:52:20,496 INFO L78 Accepts]: Start accepts. Automaton has 116810 states and 128487 transitions. Word has length 494 [2024-11-18 10:52:20,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:20,496 INFO L471 AbstractCegarLoop]: Abstraction has 116810 states and 128487 transitions. [2024-11-18 10:52:20,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 116810 states and 128487 transitions. [2024-11-18 10:52:20,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-11-18 10:52:20,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:20,505 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:52:20,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 10:52:20,505 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:20,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1617166263, now seen corresponding path program 1 times [2024-11-18 10:52:20,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:20,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379598159] [2024-11-18 10:52:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:20,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 257 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 10:52:21,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:21,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379598159] [2024-11-18 10:52:21,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379598159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:52:21,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432096994] [2024-11-18 10:52:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:21,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:52:21,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:52:21,455 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 10:52:21,455 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 10:52:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:21,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:52:21,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:52:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:52:23,850 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:52:23,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432096994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:23,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:52:23,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 10:52:23,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380427083] [2024-11-18 10:52:23,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:23,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:23,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:23,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:52:23,851 INFO L87 Difference]: Start difference. First operand 116810 states and 128487 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:26,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:26,130 INFO L93 Difference]: Finished difference Result 250258 states and 274833 transitions. [2024-11-18 10:52:26,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:26,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 507 [2024-11-18 10:52:26,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:26,279 INFO L225 Difference]: With dead ends: 250258 [2024-11-18 10:52:26,280 INFO L226 Difference]: Without dead ends: 133450 [2024-11-18 10:52:26,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:52:26,297 INFO L432 NwaCegarLoop]: 293 mSDtfsCounter, 196 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:26,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 347 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:52:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133450 states. [2024-11-18 10:52:27,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133450 to 131734. [2024-11-18 10:52:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131734 states, 131733 states have (on average 1.0905923344947734) internal successors, (143667), 131733 states have internal predecessors, (143667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131734 states to 131734 states and 143667 transitions. [2024-11-18 10:52:27,895 INFO L78 Accepts]: Start accepts. Automaton has 131734 states and 143667 transitions. Word has length 507 [2024-11-18 10:52:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:27,896 INFO L471 AbstractCegarLoop]: Abstraction has 131734 states and 143667 transitions. [2024-11-18 10:52:27,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:27,896 INFO L276 IsEmpty]: Start isEmpty. Operand 131734 states and 143667 transitions. [2024-11-18 10:52:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-18 10:52:27,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:27,904 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:52:27,918 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 10:52:28,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 10:52:28,105 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:28,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash -454745803, now seen corresponding path program 1 times [2024-11-18 10:52:28,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:28,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874625476] [2024-11-18 10:52:28,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:28,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 257 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 10:52:28,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:28,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874625476] [2024-11-18 10:52:28,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874625476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:52:28,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694019887] [2024-11-18 10:52:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:28,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:52:28,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:52:28,846 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 10:52:28,847 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 10:52:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:28,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:52:28,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:52:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 10:52:29,118 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:52:29,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694019887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:29,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:52:29,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 10:52:29,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919256786] [2024-11-18 10:52:29,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:29,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:29,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:52:29,120 INFO L87 Difference]: Start difference. First operand 131734 states and 143667 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:31,073 INFO L93 Difference]: Finished difference Result 275395 states and 300214 transitions. [2024-11-18 10:52:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 515 [2024-11-18 10:52:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:31,263 INFO L225 Difference]: With dead ends: 275395 [2024-11-18 10:52:31,263 INFO L226 Difference]: Without dead ends: 143236 [2024-11-18 10:52:31,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 514 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 10:52:31,571 INFO L432 NwaCegarLoop]: 711 mSDtfsCounter, 442 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:31,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 766 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:52:31,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143236 states. [2024-11-18 10:52:32,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143236 to 138964. [2024-11-18 10:52:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138964 states, 138963 states have (on average 1.0839504040643912) internal successors, (150629), 138963 states have internal predecessors, (150629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138964 states to 138964 states and 150629 transitions. [2024-11-18 10:52:33,404 INFO L78 Accepts]: Start accepts. Automaton has 138964 states and 150629 transitions. Word has length 515 [2024-11-18 10:52:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:33,405 INFO L471 AbstractCegarLoop]: Abstraction has 138964 states and 150629 transitions. [2024-11-18 10:52:33,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:33,405 INFO L276 IsEmpty]: Start isEmpty. Operand 138964 states and 150629 transitions. [2024-11-18 10:52:33,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-11-18 10:52:33,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:33,424 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-18 10:52:33,443 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 10:52:33,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:52:33,625 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:33,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1547645957, now seen corresponding path program 1 times [2024-11-18 10:52:33,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:33,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127478612] [2024-11-18 10:52:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-18 10:52:33,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:33,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127478612] [2024-11-18 10:52:33,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127478612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:33,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:33,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:52:33,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850176923] [2024-11-18 10:52:33,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:33,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:33,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:33,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:33,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:33,822 INFO L87 Difference]: Start difference. First operand 138964 states and 150629 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:35,311 INFO L93 Difference]: Finished difference Result 274511 states and 297340 transitions. [2024-11-18 10:52:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:35,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 548 [2024-11-18 10:52:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:35,499 INFO L225 Difference]: With dead ends: 274511 [2024-11-18 10:52:35,500 INFO L226 Difference]: Without dead ends: 135549 [2024-11-18 10:52:35,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:35,571 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 629 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:35,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 104 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:52:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135549 states. [2024-11-18 10:52:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135549 to 131285. [2024-11-18 10:52:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131285 states, 131284 states have (on average 1.0831632186709728) internal successors, (142202), 131284 states have internal predecessors, (142202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131285 states to 131285 states and 142202 transitions. [2024-11-18 10:52:37,618 INFO L78 Accepts]: Start accepts. Automaton has 131285 states and 142202 transitions. Word has length 548 [2024-11-18 10:52:37,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:37,618 INFO L471 AbstractCegarLoop]: Abstraction has 131285 states and 142202 transitions. [2024-11-18 10:52:37,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:37,619 INFO L276 IsEmpty]: Start isEmpty. Operand 131285 states and 142202 transitions. [2024-11-18 10:52:37,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-11-18 10:52:37,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:37,629 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:52:37,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 10:52:37,629 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:37,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:37,629 INFO L85 PathProgramCache]: Analyzing trace with hash -122313712, now seen corresponding path program 1 times [2024-11-18 10:52:37,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:37,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541734491] [2024-11-18 10:52:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:37,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 389 proven. 14 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-18 10:52:38,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:38,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541734491] [2024-11-18 10:52:38,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541734491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:52:38,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425288808] [2024-11-18 10:52:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:38,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:52:38,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:52:38,495 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 10:52:38,496 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 10:52:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:38,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:52:38,647 INFO L278 TraceCheckSpWp]: Computing forward predicates...