./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/Problem16_label00.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 75ebd1645cbbce4c9ca017600d59212353a954f83c001b1c580ae238d412adcc --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:32:29,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:32:29,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:32:29,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:32:29,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:32:29,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:32:29,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:32:29,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:32:29,669 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:32:29,670 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:32:29,671 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:32:29,671 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:32:29,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:32:29,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:32:29,672 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:32:29,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:32:29,674 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:32:29,674 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:32:29,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:32:29,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:32:29,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:32:29,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:32:29,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:32:29,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:32:29,677 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:32:29,677 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:32:29,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:32:29,677 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:32:29,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:32:29,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:32:29,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:32:29,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:32:29,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:32:29,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:32:29,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:32:29,679 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:32:29,679 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:32:29,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:32:29,680 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:32:29,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:32:29,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:32:29,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:32:29,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75ebd1645cbbce4c9ca017600d59212353a954f83c001b1c580ae238d412adcc [2024-11-08 11:32:29,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:32:29,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:32:29,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:32:29,881 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:32:29,881 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:32:29,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label00.c [2024-11-08 11:32:31,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:32:31,260 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:32:31,261 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label00.c [2024-11-08 11:32:31,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0e2056d/948a931e5d2943eeaa07307c27b7a6b9/FLAG548c235c5 [2024-11-08 11:32:31,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0e2056d/948a931e5d2943eeaa07307c27b7a6b9 [2024-11-08 11:32:31,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:32:31,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:32:31,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:32:31,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:32:31,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:32:31,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:32:31" (1/1) ... [2024-11-08 11:32:31,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732ca637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:31, skipping insertion in model container [2024-11-08 11:32:31,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:32:31" (1/1) ... [2024-11-08 11:32:31,641 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:32:31,795 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/Problem16_label00.c[2412,2425] [2024-11-08 11:32:32,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:32:32,102 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:32:32,114 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/Problem16_label00.c[2412,2425] [2024-11-08 11:32:32,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:32:32,238 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:32:32,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32 WrapperNode [2024-11-08 11:32:32,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:32:32,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:32:32,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:32:32,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:32:32,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,367 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-11-08 11:32:32,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:32:32,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:32:32,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:32:32,369 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:32:32,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,449 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]. [2024-11-08 11:32:32,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:32:32,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:32:32,536 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:32:32,536 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:32:32,537 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (1/1) ... [2024-11-08 11:32:32,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:32:32,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:32:32,561 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) [2024-11-08 11:32:32,564 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 [2024-11-08 11:32:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:32:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:32:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:32:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:32:32,652 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:32:32,653 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:32:34,103 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-11-08 11:32:34,103 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:32:34,124 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:32:34,124 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:32:34,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:32:34 BoogieIcfgContainer [2024-11-08 11:32:34,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:32:34,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:32:34,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:32:34,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:32:34,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:32:31" (1/3) ... [2024-11-08 11:32:34,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cae4a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:32:34, skipping insertion in model container [2024-11-08 11:32:34,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:32:32" (2/3) ... [2024-11-08 11:32:34,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cae4a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:32:34, skipping insertion in model container [2024-11-08 11:32:34,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:32:34" (3/3) ... [2024-11-08 11:32:34,132 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label00.c [2024-11-08 11:32:34,144 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:32:34,144 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:32:34,202 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:32:34,207 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;@68eac32c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:32:34,207 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:32:34,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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) [2024-11-08 11:32:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 11:32:34,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:34,219 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:32:34,220 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:34,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:34,224 INFO L85 PathProgramCache]: Analyzing trace with hash -85512855, now seen corresponding path program 1 times [2024-11-08 11:32:34,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:34,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265199119] [2024-11-08 11:32:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:34,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:34,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265199119] [2024-11-08 11:32:34,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265199119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:32:34,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:32:34,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:32:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296982720] [2024-11-08 11:32:34,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:32:34,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:32:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:34,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:32:34,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:32:34,507 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) [2024-11-08 11:32:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:35,816 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2024-11-08 11:32:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:32:35,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2024-11-08 11:32:35,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:35,829 INFO L225 Difference]: With dead ends: 1122 [2024-11-08 11:32:35,829 INFO L226 Difference]: Without dead ends: 662 [2024-11-08 11:32:35,832 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 [2024-11-08 11:32:35,835 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 339 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:35,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 223 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 11:32:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-08 11:32:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-11-08 11:32:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.5824508320726172) internal successors, (1046), 661 states have internal predecessors, (1046), 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) [2024-11-08 11:32:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1046 transitions. [2024-11-08 11:32:35,889 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1046 transitions. Word has length 21 [2024-11-08 11:32:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:35,889 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1046 transitions. [2024-11-08 11:32:35,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) [2024-11-08 11:32:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1046 transitions. [2024-11-08 11:32:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 11:32:35,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:35,893 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:32:35,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:32:35,894 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:35,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:35,894 INFO L85 PathProgramCache]: Analyzing trace with hash 765377619, now seen corresponding path program 1 times [2024-11-08 11:32:35,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:35,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374356086] [2024-11-08 11:32:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:36,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:36,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374356086] [2024-11-08 11:32:36,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374356086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:32:36,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:32:36,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:32:36,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082184058] [2024-11-08 11:32:36,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:32:36,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:32:36,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:32:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:32:36,092 INFO L87 Difference]: Start difference. First operand 662 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2024-11-08 11:32:36,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:36,980 INFO L93 Difference]: Finished difference Result 1651 states and 2539 transitions. [2024-11-08 11:32:36,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:32:36,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 92 [2024-11-08 11:32:36,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:36,984 INFO L225 Difference]: With dead ends: 1651 [2024-11-08 11:32:36,984 INFO L226 Difference]: Without dead ends: 991 [2024-11-08 11:32:36,985 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 [2024-11-08 11:32:36,986 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 338 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:36,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 77 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 11:32:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-11-08 11:32:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2024-11-08 11:32:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.3767676767676769) internal successors, (1363), 990 states have internal predecessors, (1363), 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) [2024-11-08 11:32:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1363 transitions. [2024-11-08 11:32:37,014 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1363 transitions. Word has length 92 [2024-11-08 11:32:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:37,015 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1363 transitions. [2024-11-08 11:32:37,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2024-11-08 11:32:37,016 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1363 transitions. [2024-11-08 11:32:37,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 11:32:37,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:37,018 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:32:37,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:32:37,018 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:37,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -660185960, now seen corresponding path program 1 times [2024-11-08 11:32:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:37,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762427630] [2024-11-08 11:32:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:37,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:37,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:37,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762427630] [2024-11-08 11:32:37,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762427630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:32:37,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:32:37,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:32:37,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689096245] [2024-11-08 11:32:37,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:32:37,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:32:37,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:37,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:32:37,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:32:37,122 INFO L87 Difference]: Start difference. First operand 991 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2024-11-08 11:32:38,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:38,145 INFO L93 Difference]: Finished difference Result 2967 states and 4084 transitions. [2024-11-08 11:32:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:32:38,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 93 [2024-11-08 11:32:38,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:38,150 INFO L225 Difference]: With dead ends: 2967 [2024-11-08 11:32:38,150 INFO L226 Difference]: Without dead ends: 1978 [2024-11-08 11:32:38,151 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 [2024-11-08 11:32:38,152 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 289 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:38,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 209 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 11:32:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2024-11-08 11:32:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2024-11-08 11:32:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.2468386444107233) internal successors, (2465), 1977 states have internal predecessors, (2465), 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) [2024-11-08 11:32:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2465 transitions. [2024-11-08 11:32:38,176 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2465 transitions. Word has length 93 [2024-11-08 11:32:38,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:38,176 INFO L471 AbstractCegarLoop]: Abstraction has 1978 states and 2465 transitions. [2024-11-08 11:32:38,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2024-11-08 11:32:38,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2465 transitions. [2024-11-08 11:32:38,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-08 11:32:38,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:38,177 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 11:32:38,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:32:38,178 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:38,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash 986787195, now seen corresponding path program 1 times [2024-11-08 11:32:38,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:38,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768896543] [2024-11-08 11:32:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:38,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:38,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:38,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:38,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768896543] [2024-11-08 11:32:38,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768896543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:32:38,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708232844] [2024-11-08 11:32:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:38,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:32:38,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:32:38,360 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) [2024-11-08 11:32:38,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 11:32:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:38,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:32:38,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:32:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:38,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:32:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:39,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708232844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:32:39,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:32:39,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-08 11:32:39,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123365049] [2024-11-08 11:32:39,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:32:39,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 11:32:39,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 11:32:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:32:39,331 INFO L87 Difference]: Start difference. First operand 1978 states and 2465 transitions. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 5 states have internal predecessors, (215), 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) [2024-11-08 11:32:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:43,323 INFO L93 Difference]: Finished difference Result 11523 states and 14992 transitions. [2024-11-08 11:32:43,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 11:32:43,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 5 states have internal predecessors, (215), 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 108 [2024-11-08 11:32:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:43,349 INFO L225 Difference]: With dead ends: 11523 [2024-11-08 11:32:43,349 INFO L226 Difference]: Without dead ends: 9547 [2024-11-08 11:32:43,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:32:43,352 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2681 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 3572 mSolverCounterSat, 1763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2681 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1763 IncrementalHoareTripleChecker+Valid, 3572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:43,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2681 Valid, 35 Invalid, 5335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1763 Valid, 3572 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-08 11:32:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9547 states. [2024-11-08 11:32:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 6913. [2024-11-08 11:32:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6913 states, 6912 states have (on average 1.2335069444444444) internal successors, (8526), 6912 states have internal predecessors, (8526), 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) [2024-11-08 11:32:43,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6913 states to 6913 states and 8526 transitions. [2024-11-08 11:32:43,442 INFO L78 Accepts]: Start accepts. Automaton has 6913 states and 8526 transitions. Word has length 108 [2024-11-08 11:32:43,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:43,443 INFO L471 AbstractCegarLoop]: Abstraction has 6913 states and 8526 transitions. [2024-11-08 11:32:43,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 5 states have internal predecessors, (215), 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) [2024-11-08 11:32:43,443 INFO L276 IsEmpty]: Start isEmpty. Operand 6913 states and 8526 transitions. [2024-11-08 11:32:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-08 11:32:43,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:43,451 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:32:43,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 11:32:43,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:32:43,655 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:43,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1783700334, now seen corresponding path program 1 times [2024-11-08 11:32:43,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:43,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966795064] [2024-11-08 11:32:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:44,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966795064] [2024-11-08 11:32:44,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966795064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:32:44,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:32:44,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:32:44,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969621462] [2024-11-08 11:32:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:32:44,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:32:44,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:44,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:32:44,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:32:44,102 INFO L87 Difference]: Start difference. First operand 6913 states and 8526 transitions. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 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) [2024-11-08 11:32:45,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:45,057 INFO L93 Difference]: Finished difference Result 14153 states and 17397 transitions. [2024-11-08 11:32:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:32:45,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 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 281 [2024-11-08 11:32:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:45,074 INFO L225 Difference]: With dead ends: 14153 [2024-11-08 11:32:45,075 INFO L226 Difference]: Without dead ends: 7242 [2024-11-08 11:32:45,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:32:45,082 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 232 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:45,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 322 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 11:32:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7242 states. [2024-11-08 11:32:45,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7242 to 7242. [2024-11-08 11:32:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 1.223726004695484) internal successors, (8861), 7241 states have internal predecessors, (8861), 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) [2024-11-08 11:32:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 8861 transitions. [2024-11-08 11:32:45,165 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 8861 transitions. Word has length 281 [2024-11-08 11:32:45,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:45,167 INFO L471 AbstractCegarLoop]: Abstraction has 7242 states and 8861 transitions. [2024-11-08 11:32:45,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 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) [2024-11-08 11:32:45,168 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 8861 transitions. [2024-11-08 11:32:45,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-08 11:32:45,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:45,171 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 11:32:45,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:32:45,171 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:45,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:45,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1503963873, now seen corresponding path program 1 times [2024-11-08 11:32:45,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:45,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360243175] [2024-11-08 11:32:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:45,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360243175] [2024-11-08 11:32:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360243175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:32:45,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:32:45,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 11:32:45,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446003434] [2024-11-08 11:32:45,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:32:45,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 11:32:45,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 11:32:45,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:32:45,568 INFO L87 Difference]: Start difference. First operand 7242 states and 8861 transitions. Second operand has 7 states, 7 states have (on average 45.57142857142857) internal successors, (319), 6 states have internal predecessors, (319), 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) [2024-11-08 11:32:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:46,940 INFO L93 Difference]: Finished difference Result 14875 states and 18173 transitions. [2024-11-08 11:32:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 11:32:46,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.57142857142857) internal successors, (319), 6 states have internal predecessors, (319), 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 319 [2024-11-08 11:32:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:46,958 INFO L225 Difference]: With dead ends: 14875 [2024-11-08 11:32:46,958 INFO L226 Difference]: Without dead ends: 7631 [2024-11-08 11:32:46,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:32:46,963 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 292 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:46,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 300 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 11:32:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7631 states. [2024-11-08 11:32:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7631 to 7591. [2024-11-08 11:32:47,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7591 states, 7590 states have (on average 1.087878787878788) internal successors, (8257), 7590 states have internal predecessors, (8257), 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) [2024-11-08 11:32:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 8257 transitions. [2024-11-08 11:32:47,042 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 8257 transitions. Word has length 319 [2024-11-08 11:32:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:47,042 INFO L471 AbstractCegarLoop]: Abstraction has 7591 states and 8257 transitions. [2024-11-08 11:32:47,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.57142857142857) internal successors, (319), 6 states have internal predecessors, (319), 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) [2024-11-08 11:32:47,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 8257 transitions. [2024-11-08 11:32:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-08 11:32:47,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:47,048 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:32:47,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:32:47,048 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:47,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:47,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1132127680, now seen corresponding path program 1 times [2024-11-08 11:32:47,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:47,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392116458] [2024-11-08 11:32:47,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:47,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 11:32:47,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392116458] [2024-11-08 11:32:47,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392116458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:32:47,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:32:47,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:32:47,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370083029] [2024-11-08 11:32:47,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:32:47,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:32:47,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:47,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:32:47,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:32:47,542 INFO L87 Difference]: Start difference. First operand 7591 states and 8257 transitions. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 3 states have internal predecessors, (470), 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) [2024-11-08 11:32:48,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:48,612 INFO L93 Difference]: Finished difference Result 16518 states and 18091 transitions. [2024-11-08 11:32:48,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:32:48,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 3 states have internal predecessors, (470), 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 488 [2024-11-08 11:32:48,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:48,624 INFO L225 Difference]: With dead ends: 16518 [2024-11-08 11:32:48,625 INFO L226 Difference]: Without dead ends: 9258 [2024-11-08 11:32:48,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:32:48,632 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 402 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:48,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 78 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 11:32:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9258 states. [2024-11-08 11:32:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9258 to 9236. [2024-11-08 11:32:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9236 states, 9235 states have (on average 1.0904168922577153) internal successors, (10070), 9235 states have internal predecessors, (10070), 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) [2024-11-08 11:32:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 10070 transitions. [2024-11-08 11:32:48,723 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 10070 transitions. Word has length 488 [2024-11-08 11:32:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:48,724 INFO L471 AbstractCegarLoop]: Abstraction has 9236 states and 10070 transitions. [2024-11-08 11:32:48,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 3 states have internal predecessors, (470), 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) [2024-11-08 11:32:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 10070 transitions. [2024-11-08 11:32:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2024-11-08 11:32:48,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:48,730 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:32:48,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:32:48,731 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:48,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:48,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2062017978, now seen corresponding path program 1 times [2024-11-08 11:32:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913420513] [2024-11-08 11:32:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:48,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-08 11:32:49,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:49,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913420513] [2024-11-08 11:32:49,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913420513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:32:49,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:32:49,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:32:49,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790228419] [2024-11-08 11:32:49,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:32:49,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:32:49,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:49,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:32:49,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:32:49,075 INFO L87 Difference]: Start difference. First operand 9236 states and 10070 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 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) [2024-11-08 11:32:49,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:49,831 INFO L93 Difference]: Finished difference Result 20137 states and 22017 transitions. [2024-11-08 11:32:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:32:49,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 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 524 [2024-11-08 11:32:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:49,843 INFO L225 Difference]: With dead ends: 20137 [2024-11-08 11:32:49,843 INFO L226 Difference]: Without dead ends: 11232 [2024-11-08 11:32:49,847 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 [2024-11-08 11:32:49,848 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 68 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:49,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 81 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 11:32:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11232 states. [2024-11-08 11:32:49,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11232 to 11210. [2024-11-08 11:32:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11210 states, 11209 states have (on average 1.0888571683468642) internal successors, (12205), 11209 states have internal predecessors, (12205), 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) [2024-11-08 11:32:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11210 states to 11210 states and 12205 transitions. [2024-11-08 11:32:49,936 INFO L78 Accepts]: Start accepts. Automaton has 11210 states and 12205 transitions. Word has length 524 [2024-11-08 11:32:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:49,936 INFO L471 AbstractCegarLoop]: Abstraction has 11210 states and 12205 transitions. [2024-11-08 11:32:49,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 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) [2024-11-08 11:32:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 11210 states and 12205 transitions. [2024-11-08 11:32:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-08 11:32:49,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:49,944 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:32:49,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 11:32:49,944 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:49,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:49,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1233229018, now seen corresponding path program 1 times [2024-11-08 11:32:49,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:49,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423907411] [2024-11-08 11:32:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:49,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 37 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423907411] [2024-11-08 11:32:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423907411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:32:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491578597] [2024-11-08 11:32:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:50,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:32:50,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:32:50,372 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) [2024-11-08 11:32:50,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 11:32:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:50,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 11:32:50,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:32:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:51,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:32:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 37 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:32:51,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491578597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:32:51,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:32:51,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 11:32:51,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994349499] [2024-11-08 11:32:51,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:32:51,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 11:32:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 11:32:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-11-08 11:32:51,665 INFO L87 Difference]: Start difference. First operand 11210 states and 12205 transitions. Second operand has 11 states, 11 states have (on average 144.9090909090909) internal successors, (1594), 10 states have internal predecessors, (1594), 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) [2024-11-08 11:32:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:54,300 INFO L93 Difference]: Finished difference Result 27781 states and 30609 transitions. [2024-11-08 11:32:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 11:32:54,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 144.9090909090909) internal successors, (1594), 10 states have internal predecessors, (1594), 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 532 [2024-11-08 11:32:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:54,318 INFO L225 Difference]: With dead ends: 27781 [2024-11-08 11:32:54,318 INFO L226 Difference]: Without dead ends: 17192 [2024-11-08 11:32:54,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 1057 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-11-08 11:32:54,328 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1040 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5871 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 6445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 5871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:54,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 90 Invalid, 6445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 5871 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 11:32:54,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17192 states. [2024-11-08 11:32:54,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17192 to 14171. [2024-11-08 11:32:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14171 states, 14170 states have (on average 1.0829216654904728) internal successors, (15345), 14170 states have internal predecessors, (15345), 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) [2024-11-08 11:32:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14171 states to 14171 states and 15345 transitions. [2024-11-08 11:32:54,448 INFO L78 Accepts]: Start accepts. Automaton has 14171 states and 15345 transitions. Word has length 532 [2024-11-08 11:32:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:54,449 INFO L471 AbstractCegarLoop]: Abstraction has 14171 states and 15345 transitions. [2024-11-08 11:32:54,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 144.9090909090909) internal successors, (1594), 10 states have internal predecessors, (1594), 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) [2024-11-08 11:32:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 14171 states and 15345 transitions. [2024-11-08 11:32:54,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2024-11-08 11:32:54,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:54,455 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:32:54,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 11:32:54,656 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,SelfDestructingSolverStorable8 [2024-11-08 11:32:54,656 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:54,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash 195073257, now seen corresponding path program 1 times [2024-11-08 11:32:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:54,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985314650] [2024-11-08 11:32:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 793 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-08 11:32:55,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:55,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985314650] [2024-11-08 11:32:55,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985314650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:32:55,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:32:55,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:32:55,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19620290] [2024-11-08 11:32:55,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:32:55,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:32:55,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:55,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:32:55,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:32:55,095 INFO L87 Difference]: Start difference. First operand 14171 states and 15345 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2024-11-08 11:32:55,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:55,745 INFO L93 Difference]: Finished difference Result 30972 states and 33809 transitions. [2024-11-08 11:32:55,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:32:55,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 663 [2024-11-08 11:32:55,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:55,765 INFO L225 Difference]: With dead ends: 30972 [2024-11-08 11:32:55,765 INFO L226 Difference]: Without dead ends: 17790 [2024-11-08 11:32:55,775 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 [2024-11-08 11:32:55,775 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 225 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:55,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 41 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:32:55,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17790 states. [2024-11-08 11:32:55,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17790 to 17790. [2024-11-08 11:32:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17790 states, 17789 states have (on average 1.0859519928045422) internal successors, (19318), 17789 states have internal predecessors, (19318), 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) [2024-11-08 11:32:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17790 states to 17790 states and 19318 transitions. [2024-11-08 11:32:55,914 INFO L78 Accepts]: Start accepts. Automaton has 17790 states and 19318 transitions. Word has length 663 [2024-11-08 11:32:55,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:55,915 INFO L471 AbstractCegarLoop]: Abstraction has 17790 states and 19318 transitions. [2024-11-08 11:32:55,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2024-11-08 11:32:55,915 INFO L276 IsEmpty]: Start isEmpty. Operand 17790 states and 19318 transitions. [2024-11-08 11:32:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-08 11:32:55,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:55,922 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 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] [2024-11-08 11:32:55,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 11:32:55,922 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:55,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:55,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1097089672, now seen corresponding path program 1 times [2024-11-08 11:32:55,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:55,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96994237] [2024-11-08 11:32:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:55,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-08 11:32:56,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:56,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96994237] [2024-11-08 11:32:56,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96994237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:32:56,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:32:56,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:32:56,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137665722] [2024-11-08 11:32:56,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:32:56,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:32:56,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:32:56,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:32:56,247 INFO L87 Difference]: Start difference. First operand 17790 states and 19318 transitions. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2024-11-08 11:32:56,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:56,950 INFO L93 Difference]: Finished difference Result 38868 states and 42380 transitions. [2024-11-08 11:32:56,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:32:56,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 697 [2024-11-08 11:32:56,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:56,971 INFO L225 Difference]: With dead ends: 38868 [2024-11-08 11:32:56,972 INFO L226 Difference]: Without dead ends: 22067 [2024-11-08 11:32:56,985 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 [2024-11-08 11:32:56,985 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 155 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:56,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 438 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:32:56,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22067 states. [2024-11-08 11:32:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22067 to 20751. [2024-11-08 11:32:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20751 states, 20750 states have (on average 1.078698795180723) internal successors, (22383), 20750 states have internal predecessors, (22383), 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) [2024-11-08 11:32:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20751 states to 20751 states and 22383 transitions. [2024-11-08 11:32:57,140 INFO L78 Accepts]: Start accepts. Automaton has 20751 states and 22383 transitions. Word has length 697 [2024-11-08 11:32:57,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:57,141 INFO L471 AbstractCegarLoop]: Abstraction has 20751 states and 22383 transitions. [2024-11-08 11:32:57,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2024-11-08 11:32:57,141 INFO L276 IsEmpty]: Start isEmpty. Operand 20751 states and 22383 transitions. [2024-11-08 11:32:57,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2024-11-08 11:32:57,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:57,154 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:32:57,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 11:32:57,155 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:57,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:57,157 INFO L85 PathProgramCache]: Analyzing trace with hash 792755469, now seen corresponding path program 1 times [2024-11-08 11:32:57,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:57,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259295154] [2024-11-08 11:32:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:57,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:32:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 908 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-08 11:32:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:32:57,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259295154] [2024-11-08 11:32:57,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259295154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:32:57,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:32:57,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:32:57,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549841193] [2024-11-08 11:32:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:32:57,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:32:57,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:32:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:32:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:32:57,836 INFO L87 Difference]: Start difference. First operand 20751 states and 22383 transitions. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 3 states have internal predecessors, (577), 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) [2024-11-08 11:32:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:32:58,749 INFO L93 Difference]: Finished difference Result 41171 states and 44433 transitions. [2024-11-08 11:32:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:32:58,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 3 states have internal predecessors, (577), 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 783 [2024-11-08 11:32:58,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:32:58,766 INFO L225 Difference]: With dead ends: 41171 [2024-11-08 11:32:58,766 INFO L226 Difference]: Without dead ends: 20751 [2024-11-08 11:32:58,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:32:58,778 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 268 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:32:58,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 124 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 11:32:58,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20751 states. [2024-11-08 11:32:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20751 to 20751. [2024-11-08 11:32:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20751 states, 20750 states have (on average 1.0784578313253013) internal successors, (22378), 20750 states have internal predecessors, (22378), 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) [2024-11-08 11:32:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20751 states to 20751 states and 22378 transitions. [2024-11-08 11:32:58,992 INFO L78 Accepts]: Start accepts. Automaton has 20751 states and 22378 transitions. Word has length 783 [2024-11-08 11:32:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:32:58,993 INFO L471 AbstractCegarLoop]: Abstraction has 20751 states and 22378 transitions. [2024-11-08 11:32:58,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 3 states have internal predecessors, (577), 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) [2024-11-08 11:32:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 20751 states and 22378 transitions. [2024-11-08 11:32:59,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2024-11-08 11:32:59,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:32:59,004 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:32:59,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 11:32:59,004 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:32:59,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:32:59,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1236644673, now seen corresponding path program 1 times [2024-11-08 11:32:59,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:32:59,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363456130] [2024-11-08 11:32:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:32:59,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:32:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 377 proven. 860 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-08 11:33:00,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363456130] [2024-11-08 11:33:00,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363456130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647100858] [2024-11-08 11:33:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:00,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:00,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:33:00,083 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) [2024-11-08 11:33:00,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 11:33:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:00,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:33:00,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:33:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 770 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-11-08 11:33:00,498 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:33:00,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647100858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:00,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:33:00,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 11:33:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015442136] [2024-11-08 11:33:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:00,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:00,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:33:00,500 INFO L87 Difference]: Start difference. First operand 20751 states and 22378 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2024-11-08 11:33:01,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:01,046 INFO L93 Difference]: Finished difference Result 40513 states and 43761 transitions. [2024-11-08 11:33:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:01,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 844 [2024-11-08 11:33:01,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:01,063 INFO L225 Difference]: With dead ends: 40513 [2024-11-08 11:33:01,064 INFO L226 Difference]: Without dead ends: 20751 [2024-11-08 11:33:01,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:33:01,076 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 165 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:01,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 430 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:01,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20751 states. [2024-11-08 11:33:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20751 to 19764. [2024-11-08 11:33:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19764 states, 19763 states have (on average 1.0736224257450793) internal successors, (21218), 19763 states have internal predecessors, (21218), 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) [2024-11-08 11:33:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 21218 transitions. [2024-11-08 11:33:01,223 INFO L78 Accepts]: Start accepts. Automaton has 19764 states and 21218 transitions. Word has length 844 [2024-11-08 11:33:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:01,224 INFO L471 AbstractCegarLoop]: Abstraction has 19764 states and 21218 transitions. [2024-11-08 11:33:01,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2024-11-08 11:33:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 19764 states and 21218 transitions. [2024-11-08 11:33:01,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2024-11-08 11:33:01,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:01,239 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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, 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, 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, 2, 2, 2, 2, 2, 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] [2024-11-08 11:33:01,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 11:33:01,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:01,444 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:01,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:01,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1236728044, now seen corresponding path program 1 times [2024-11-08 11:33:01,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:01,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179584546] [2024-11-08 11:33:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:01,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1508 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2024-11-08 11:33:01,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:01,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179584546] [2024-11-08 11:33:01,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179584546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:01,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:33:01,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:33:01,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485240432] [2024-11-08 11:33:01,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:01,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:01,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:01,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:01,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:33:01,820 INFO L87 Difference]: Start difference. First operand 19764 states and 21218 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2024-11-08 11:33:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:02,429 INFO L93 Difference]: Finished difference Result 44132 states and 47644 transitions. [2024-11-08 11:33:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 844 [2024-11-08 11:33:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:02,449 INFO L225 Difference]: With dead ends: 44132 [2024-11-08 11:33:02,449 INFO L226 Difference]: Without dead ends: 25357 [2024-11-08 11:33:02,461 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 [2024-11-08 11:33:02,462 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 273 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:02,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 430 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25357 states. [2024-11-08 11:33:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25357 to 24370. [2024-11-08 11:33:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24370 states, 24369 states have (on average 1.0633591858508762) internal successors, (25913), 24369 states have internal predecessors, (25913), 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) [2024-11-08 11:33:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24370 states to 24370 states and 25913 transitions. [2024-11-08 11:33:02,625 INFO L78 Accepts]: Start accepts. Automaton has 24370 states and 25913 transitions. Word has length 844 [2024-11-08 11:33:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:02,625 INFO L471 AbstractCegarLoop]: Abstraction has 24370 states and 25913 transitions. [2024-11-08 11:33:02,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2024-11-08 11:33:02,626 INFO L276 IsEmpty]: Start isEmpty. Operand 24370 states and 25913 transitions. [2024-11-08 11:33:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2024-11-08 11:33:02,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:02,640 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:33:02,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 11:33:02,641 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:02,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2036459738, now seen corresponding path program 1 times [2024-11-08 11:33:02,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:02,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678136011] [2024-11-08 11:33:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:02,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 814 proven. 258 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 11:33:03,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:03,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678136011] [2024-11-08 11:33:03,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678136011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:03,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679168269] [2024-11-08 11:33:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:03,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:03,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:33:03,773 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) [2024-11-08 11:33:03,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 11:33:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:03,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:33:03,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:33:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2024-11-08 11:33:04,026 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:33:04,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679168269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:04,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:33:04,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 11:33:04,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882884409] [2024-11-08 11:33:04,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:04,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:33:04,028 INFO L87 Difference]: Start difference. First operand 24370 states and 25913 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2024-11-08 11:33:04,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:04,671 INFO L93 Difference]: Finished difference Result 51370 states and 54743 transitions. [2024-11-08 11:33:04,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:04,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 877 [2024-11-08 11:33:04,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:04,693 INFO L225 Difference]: With dead ends: 51370 [2024-11-08 11:33:04,694 INFO L226 Difference]: Without dead ends: 27989 [2024-11-08 11:33:04,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:33:04,707 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 344 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:04,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 384 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:33:04,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27989 states. [2024-11-08 11:33:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27989 to 27002. [2024-11-08 11:33:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27002 states, 27001 states have (on average 1.0619236324580572) internal successors, (28673), 27001 states have internal predecessors, (28673), 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) [2024-11-08 11:33:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27002 states to 27002 states and 28673 transitions. [2024-11-08 11:33:04,935 INFO L78 Accepts]: Start accepts. Automaton has 27002 states and 28673 transitions. Word has length 877 [2024-11-08 11:33:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:04,935 INFO L471 AbstractCegarLoop]: Abstraction has 27002 states and 28673 transitions. [2024-11-08 11:33:04,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2024-11-08 11:33:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 27002 states and 28673 transitions. [2024-11-08 11:33:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2024-11-08 11:33:04,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:04,952 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:33:04,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 11:33:05,152 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,SelfDestructingSolverStorable14 [2024-11-08 11:33:05,153 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:05,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:05,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1187312480, now seen corresponding path program 1 times [2024-11-08 11:33:05,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:05,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585640112] [2024-11-08 11:33:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:05,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 1187 proven. 258 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-08 11:33:06,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:06,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585640112] [2024-11-08 11:33:06,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585640112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:06,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798530515] [2024-11-08 11:33:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:06,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:06,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:33:06,155 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) [2024-11-08 11:33:06,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 11:33:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:06,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:33:06,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:33:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 1350 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-08 11:33:06,567 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:33:06,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798530515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:06,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:33:06,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 11:33:06,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194996518] [2024-11-08 11:33:06,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:06,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:06,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:06,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:06,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:33:06,569 INFO L87 Difference]: Start difference. First operand 27002 states and 28673 transitions. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2024-11-08 11:33:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:07,187 INFO L93 Difference]: Finished difference Result 54989 states and 58421 transitions. [2024-11-08 11:33:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:07,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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 1016 [2024-11-08 11:33:07,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:07,210 INFO L225 Difference]: With dead ends: 54989 [2024-11-08 11:33:07,210 INFO L226 Difference]: Without dead ends: 28976 [2024-11-08 11:33:07,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:33:07,225 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 85 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:07,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 435 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28976 states. [2024-11-08 11:33:07,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28976 to 28318. [2024-11-08 11:33:07,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28318 states, 28317 states have (on average 1.0529363986297984) internal successors, (29816), 28317 states have internal predecessors, (29816), 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) [2024-11-08 11:33:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28318 states to 28318 states and 29816 transitions. [2024-11-08 11:33:07,473 INFO L78 Accepts]: Start accepts. Automaton has 28318 states and 29816 transitions. Word has length 1016 [2024-11-08 11:33:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:07,473 INFO L471 AbstractCegarLoop]: Abstraction has 28318 states and 29816 transitions. [2024-11-08 11:33:07,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2024-11-08 11:33:07,473 INFO L276 IsEmpty]: Start isEmpty. Operand 28318 states and 29816 transitions. [2024-11-08 11:33:07,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2024-11-08 11:33:07,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:07,487 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:33:07,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 11:33:07,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 11:33:07,688 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:07,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:07,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1156480900, now seen corresponding path program 1 times [2024-11-08 11:33:07,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:07,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288529770] [2024-11-08 11:33:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:07,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 1374 proven. 168 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-11-08 11:33:08,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:08,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288529770] [2024-11-08 11:33:08,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288529770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:08,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227475503] [2024-11-08 11:33:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:08,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:33:08,472 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) [2024-11-08 11:33:08,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 11:33:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:08,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:33:08,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:33:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2024-11-08 11:33:08,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:33:08,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227475503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:08,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:33:08,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-08 11:33:08,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920018196] [2024-11-08 11:33:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:08,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:08,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:08,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:08,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:33:08,889 INFO L87 Difference]: Start difference. First operand 28318 states and 29816 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2024-11-08 11:33:09,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:09,585 INFO L93 Difference]: Finished difference Result 54989 states and 57968 transitions. [2024-11-08 11:33:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:09,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 1063 [2024-11-08 11:33:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:09,611 INFO L225 Difference]: With dead ends: 54989 [2024-11-08 11:33:09,612 INFO L226 Difference]: Without dead ends: 27989 [2024-11-08 11:33:09,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1062 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:33:09,631 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 201 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:09,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 372 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:33:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27989 states. [2024-11-08 11:33:09,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27989 to 26344. [2024-11-08 11:33:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26344 states, 26343 states have (on average 1.0412633337129409) internal successors, (27430), 26343 states have internal predecessors, (27430), 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) [2024-11-08 11:33:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26344 states to 26344 states and 27430 transitions. [2024-11-08 11:33:09,930 INFO L78 Accepts]: Start accepts. Automaton has 26344 states and 27430 transitions. Word has length 1063 [2024-11-08 11:33:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:09,931 INFO L471 AbstractCegarLoop]: Abstraction has 26344 states and 27430 transitions. [2024-11-08 11:33:09,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2024-11-08 11:33:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 26344 states and 27430 transitions. [2024-11-08 11:33:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2024-11-08 11:33:09,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:09,952 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2024-11-08 11:33:09,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 11:33:10,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 11:33:10,153 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:10,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash 677401845, now seen corresponding path program 1 times [2024-11-08 11:33:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:10,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514380952] [2024-11-08 11:33:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:10,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1208 proven. 139 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2024-11-08 11:33:11,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:11,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514380952] [2024-11-08 11:33:11,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514380952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:11,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647476370] [2024-11-08 11:33:11,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:11,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:11,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:33:11,350 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:33:11,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 11:33:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:11,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:33:11,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:33:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1623 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-08 11:33:11,747 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:33:11,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647476370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:11,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:33:11,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-08 11:33:11,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716525971] [2024-11-08 11:33:11,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:11,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:11,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:11,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:11,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:33:11,750 INFO L87 Difference]: Start difference. First operand 26344 states and 27430 transitions. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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) [2024-11-08 11:33:12,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:12,391 INFO L93 Difference]: Finished difference Result 50383 states and 52460 transitions. [2024-11-08 11:33:12,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:12,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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 1131 [2024-11-08 11:33:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:12,412 INFO L225 Difference]: With dead ends: 50383 [2024-11-08 11:33:12,413 INFO L226 Difference]: Without dead ends: 25357 [2024-11-08 11:33:12,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:33:12,428 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 86 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:12,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 438 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:12,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25357 states. [2024-11-08 11:33:12,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25357 to 24041. [2024-11-08 11:33:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24041 states, 24040 states have (on average 1.0278702163061564) internal successors, (24710), 24040 states have internal predecessors, (24710), 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) [2024-11-08 11:33:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24041 states to 24041 states and 24710 transitions. [2024-11-08 11:33:12,614 INFO L78 Accepts]: Start accepts. Automaton has 24041 states and 24710 transitions. Word has length 1131 [2024-11-08 11:33:12,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:12,615 INFO L471 AbstractCegarLoop]: Abstraction has 24041 states and 24710 transitions. [2024-11-08 11:33:12,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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) [2024-11-08 11:33:12,615 INFO L276 IsEmpty]: Start isEmpty. Operand 24041 states and 24710 transitions. [2024-11-08 11:33:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1175 [2024-11-08 11:33:12,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:12,628 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:33:12,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 11:33:12,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:12,829 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:12,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:12,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1648615078, now seen corresponding path program 1 times [2024-11-08 11:33:12,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:12,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684184689] [2024-11-08 11:33:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:12,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 1366 proven. 139 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2024-11-08 11:33:14,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:14,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684184689] [2024-11-08 11:33:14,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684184689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:14,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709008495] [2024-11-08 11:33:14,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:14,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:14,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:33:14,001 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:33:14,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 11:33:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:14,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 11:33:14,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:33:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 745 proven. 19 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-08 11:33:15,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:33:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2349 backedges. 764 proven. 0 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-08 11:33:15,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709008495] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:15,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 11:33:15,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-11-08 11:33:15,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812658133] [2024-11-08 11:33:15,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:15,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:33:15,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:15,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:33:15,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:33:15,231 INFO L87 Difference]: Start difference. First operand 24041 states and 24710 transitions. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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) [2024-11-08 11:33:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:16,003 INFO L93 Difference]: Finished difference Result 25049 states and 25727 transitions. [2024-11-08 11:33:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:33:16,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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 1174 [2024-11-08 11:33:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:16,022 INFO L225 Difference]: With dead ends: 25049 [2024-11-08 11:33:16,022 INFO L226 Difference]: Without dead ends: 25028 [2024-11-08 11:33:16,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2351 GetRequests, 2344 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:33:16,027 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 512 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:16,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 17 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 11:33:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25028 states. [2024-11-08 11:33:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25028 to 24041. [2024-11-08 11:33:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24041 states, 24040 states have (on average 1.0277454242928452) internal successors, (24707), 24040 states have internal predecessors, (24707), 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) [2024-11-08 11:33:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24041 states to 24041 states and 24707 transitions. [2024-11-08 11:33:16,194 INFO L78 Accepts]: Start accepts. Automaton has 24041 states and 24707 transitions. Word has length 1174 [2024-11-08 11:33:16,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:16,195 INFO L471 AbstractCegarLoop]: Abstraction has 24041 states and 24707 transitions. [2024-11-08 11:33:16,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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) [2024-11-08 11:33:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 24041 states and 24707 transitions. [2024-11-08 11:33:16,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1387 [2024-11-08 11:33:16,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:16,213 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:33:16,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 11:33:16,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:16,413 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:16,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:16,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1355376705, now seen corresponding path program 1 times [2024-11-08 11:33:16,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:16,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061465785] [2024-11-08 11:33:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:16,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2893 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 2780 trivial. 0 not checked. [2024-11-08 11:33:17,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061465785] [2024-11-08 11:33:17,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061465785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:17,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:33:17,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:33:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450770653] [2024-11-08 11:33:17,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:17,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:17,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:17,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:17,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:33:17,286 INFO L87 Difference]: Start difference. First operand 24041 states and 24707 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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) [2024-11-08 11:33:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:17,883 INFO L93 Difference]: Finished difference Result 49067 states and 50506 transitions. [2024-11-08 11:33:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:17,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 1386 [2024-11-08 11:33:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:17,905 INFO L225 Difference]: With dead ends: 49067 [2024-11-08 11:33:17,905 INFO L226 Difference]: Without dead ends: 25686 [2024-11-08 11:33:17,920 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 [2024-11-08 11:33:17,920 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 321 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:17,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 418 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25686 states. [2024-11-08 11:33:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25686 to 23383. [2024-11-08 11:33:18,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23383 states, 23382 states have (on average 1.0244204943973998) internal successors, (23953), 23382 states have internal predecessors, (23953), 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) [2024-11-08 11:33:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23383 states to 23383 states and 23953 transitions. [2024-11-08 11:33:18,099 INFO L78 Accepts]: Start accepts. Automaton has 23383 states and 23953 transitions. Word has length 1386 [2024-11-08 11:33:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:18,100 INFO L471 AbstractCegarLoop]: Abstraction has 23383 states and 23953 transitions. [2024-11-08 11:33:18,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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) [2024-11-08 11:33:18,100 INFO L276 IsEmpty]: Start isEmpty. Operand 23383 states and 23953 transitions. [2024-11-08 11:33:18,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1560 [2024-11-08 11:33:18,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:18,123 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:33:18,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 11:33:18,124 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:18,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash 209483619, now seen corresponding path program 1 times [2024-11-08 11:33:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:18,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448241408] [2024-11-08 11:33:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4456 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 4305 trivial. 0 not checked. [2024-11-08 11:33:18,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:18,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448241408] [2024-11-08 11:33:18,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448241408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:18,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:33:18,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:33:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513380580] [2024-11-08 11:33:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:18,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:18,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:18,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:33:18,848 INFO L87 Difference]: Start difference. First operand 23383 states and 23953 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) 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) [2024-11-08 11:33:19,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:19,429 INFO L93 Difference]: Finished difference Result 44132 states and 45247 transitions. [2024-11-08 11:33:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:19,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) 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 1559 [2024-11-08 11:33:19,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:19,444 INFO L225 Difference]: With dead ends: 44132 [2024-11-08 11:33:19,444 INFO L226 Difference]: Without dead ends: 20751 [2024-11-08 11:33:19,455 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 [2024-11-08 11:33:19,456 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 316 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:19,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 422 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:19,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20751 states. [2024-11-08 11:33:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20751 to 19764. [2024-11-08 11:33:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19764 states, 19763 states have (on average 1.0177604614684006) internal successors, (20114), 19763 states have internal predecessors, (20114), 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) [2024-11-08 11:33:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 20114 transitions. [2024-11-08 11:33:19,602 INFO L78 Accepts]: Start accepts. Automaton has 19764 states and 20114 transitions. Word has length 1559 [2024-11-08 11:33:19,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:19,603 INFO L471 AbstractCegarLoop]: Abstraction has 19764 states and 20114 transitions. [2024-11-08 11:33:19,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) 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) [2024-11-08 11:33:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand 19764 states and 20114 transitions. [2024-11-08 11:33:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1766 [2024-11-08 11:33:19,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:19,627 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:33:19,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 11:33:19,627 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:19,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1312999702, now seen corresponding path program 1 times [2024-11-08 11:33:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:19,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142124013] [2024-11-08 11:33:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5290 backedges. 3688 proven. 0 refuted. 0 times theorem prover too weak. 1602 trivial. 0 not checked. [2024-11-08 11:33:21,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:21,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142124013] [2024-11-08 11:33:21,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142124013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:21,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:33:21,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 11:33:21,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665149764] [2024-11-08 11:33:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:21,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:33:21,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:33:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:33:21,133 INFO L87 Difference]: Start difference. First operand 19764 states and 20114 transitions. Second operand has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 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) [2024-11-08 11:33:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:21,870 INFO L93 Difference]: Finished difference Result 35594 states and 36262 transitions. [2024-11-08 11:33:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 11:33:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 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 1765 [2024-11-08 11:33:21,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:21,888 INFO L225 Difference]: With dead ends: 35594 [2024-11-08 11:33:21,888 INFO L226 Difference]: Without dead ends: 19780 [2024-11-08 11:33:21,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:33:21,897 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 218 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:21,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 446 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 11:33:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19780 states. [2024-11-08 11:33:22,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19780 to 19764. [2024-11-08 11:33:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19764 states, 19763 states have (on average 1.0175580630471082) internal successors, (20110), 19763 states have internal predecessors, (20110), 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) [2024-11-08 11:33:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 20110 transitions. [2024-11-08 11:33:22,037 INFO L78 Accepts]: Start accepts. Automaton has 19764 states and 20110 transitions. Word has length 1765 [2024-11-08 11:33:22,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:22,038 INFO L471 AbstractCegarLoop]: Abstraction has 19764 states and 20110 transitions. [2024-11-08 11:33:22,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 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) [2024-11-08 11:33:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 19764 states and 20110 transitions. [2024-11-08 11:33:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1896 [2024-11-08 11:33:22,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:22,063 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:33:22,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 11:33:22,063 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:22,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1081445396, now seen corresponding path program 1 times [2024-11-08 11:33:22,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:22,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539950567] [2024-11-08 11:33:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:22,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6406 backedges. 4253 proven. 0 refuted. 0 times theorem prover too weak. 2153 trivial. 0 not checked. [2024-11-08 11:33:23,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:23,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539950567] [2024-11-08 11:33:23,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539950567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:23,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:33:23,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 11:33:23,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383059543] [2024-11-08 11:33:23,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:23,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:33:23,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:23,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:33:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:33:23,323 INFO L87 Difference]: Start difference. First operand 19764 states and 20110 transitions. Second operand has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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) [2024-11-08 11:33:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:24,066 INFO L93 Difference]: Finished difference Result 35907 states and 36572 transitions. [2024-11-08 11:33:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:33:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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 1895 [2024-11-08 11:33:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:24,082 INFO L225 Difference]: With dead ends: 35907 [2024-11-08 11:33:24,082 INFO L226 Difference]: Without dead ends: 20093 [2024-11-08 11:33:24,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:33:24,090 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 120 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:24,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 567 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 11:33:24,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20093 states. [2024-11-08 11:33:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20093 to 20093. [2024-11-08 11:33:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20093 states, 20092 states have (on average 1.0173203264981088) internal successors, (20440), 20092 states have internal predecessors, (20440), 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) [2024-11-08 11:33:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20093 states to 20093 states and 20440 transitions. [2024-11-08 11:33:24,217 INFO L78 Accepts]: Start accepts. Automaton has 20093 states and 20440 transitions. Word has length 1895 [2024-11-08 11:33:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:24,217 INFO L471 AbstractCegarLoop]: Abstraction has 20093 states and 20440 transitions. [2024-11-08 11:33:24,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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) [2024-11-08 11:33:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 20093 states and 20440 transitions. [2024-11-08 11:33:24,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1998 [2024-11-08 11:33:24,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:24,243 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 11:33:24,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 11:33:24,243 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:24,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1600763632, now seen corresponding path program 1 times [2024-11-08 11:33:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195660775] [2024-11-08 11:33:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:24,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7045 backedges. 5524 proven. 14 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2024-11-08 11:33:27,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:27,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195660775] [2024-11-08 11:33:27,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195660775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:27,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282734320] [2024-11-08 11:33:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:27,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:27,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:33:27,129 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:33:27,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 11:33:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:27,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 2278 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:33:27,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:33:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7045 backedges. 4028 proven. 0 refuted. 0 times theorem prover too weak. 3017 trivial. 0 not checked. [2024-11-08 11:33:27,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:33:27,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282734320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:27,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:33:27,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 11:33:27,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616295827] [2024-11-08 11:33:27,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:27,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:27,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:27,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:27,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:33:27,691 INFO L87 Difference]: Start difference. First operand 20093 states and 20440 transitions. Second operand has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 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) [2024-11-08 11:33:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:28,268 INFO L93 Difference]: Finished difference Result 36236 states and 36898 transitions. [2024-11-08 11:33:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:28,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 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 1997 [2024-11-08 11:33:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:28,282 INFO L225 Difference]: With dead ends: 36236 [2024-11-08 11:33:28,282 INFO L226 Difference]: Without dead ends: 20093 [2024-11-08 11:33:28,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2006 GetRequests, 2001 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:33:28,290 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 99 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:28,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 54 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:28,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20093 states. [2024-11-08 11:33:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20093 to 18119. [2024-11-08 11:33:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18119 states, 18118 states have (on average 1.0164477315376974) internal successors, (18416), 18118 states have internal predecessors, (18416), 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) [2024-11-08 11:33:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18119 states to 18119 states and 18416 transitions. [2024-11-08 11:33:28,411 INFO L78 Accepts]: Start accepts. Automaton has 18119 states and 18416 transitions. Word has length 1997 [2024-11-08 11:33:28,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:28,411 INFO L471 AbstractCegarLoop]: Abstraction has 18119 states and 18416 transitions. [2024-11-08 11:33:28,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 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) [2024-11-08 11:33:28,412 INFO L276 IsEmpty]: Start isEmpty. Operand 18119 states and 18416 transitions. [2024-11-08 11:33:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2044 [2024-11-08 11:33:28,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:28,437 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:33:28,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 11:33:28,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 11:33:28,638 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:28,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash 542584330, now seen corresponding path program 1 times [2024-11-08 11:33:28,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:28,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828969744] [2024-11-08 11:33:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:28,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7917 backedges. 3845 proven. 32 refuted. 0 times theorem prover too weak. 4040 trivial. 0 not checked. [2024-11-08 11:33:30,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:30,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828969744] [2024-11-08 11:33:30,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828969744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:30,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740821687] [2024-11-08 11:33:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:30,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:30,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:33:30,319 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:33:30,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 11:33:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:30,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:33:30,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:33:31,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7917 backedges. 4878 proven. 0 refuted. 0 times theorem prover too weak. 3039 trivial. 0 not checked. [2024-11-08 11:33:31,104 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:33:31,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740821687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:31,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:33:31,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-08 11:33:31,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809297089] [2024-11-08 11:33:31,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:31,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:31,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:31,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:33:31,106 INFO L87 Difference]: Start difference. First operand 18119 states and 18416 transitions. Second operand has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 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) [2024-11-08 11:33:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:31,713 INFO L93 Difference]: Finished difference Result 32288 states and 32850 transitions. [2024-11-08 11:33:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:31,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 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 2043 [2024-11-08 11:33:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:31,727 INFO L225 Difference]: With dead ends: 32288 [2024-11-08 11:33:31,727 INFO L226 Difference]: Without dead ends: 18119 [2024-11-08 11:33:31,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2046 GetRequests, 2042 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:33:31,735 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 122 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:31,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 433 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18119 states. [2024-11-08 11:33:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18119 to 18119. [2024-11-08 11:33:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18119 states, 18118 states have (on average 1.016006181697759) internal successors, (18408), 18118 states have internal predecessors, (18408), 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) [2024-11-08 11:33:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18119 states to 18119 states and 18408 transitions. [2024-11-08 11:33:31,860 INFO L78 Accepts]: Start accepts. Automaton has 18119 states and 18408 transitions. Word has length 2043 [2024-11-08 11:33:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:31,861 INFO L471 AbstractCegarLoop]: Abstraction has 18119 states and 18408 transitions. [2024-11-08 11:33:31,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 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) [2024-11-08 11:33:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 18119 states and 18408 transitions. [2024-11-08 11:33:31,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2065 [2024-11-08 11:33:31,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:31,888 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 11:33:31,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 11:33:32,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 11:33:32,089 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:32,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1496990068, now seen corresponding path program 1 times [2024-11-08 11:33:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:32,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351726055] [2024-11-08 11:33:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:32,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7732 backedges. 5681 proven. 140 refuted. 0 times theorem prover too weak. 1911 trivial. 0 not checked. [2024-11-08 11:33:34,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:34,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351726055] [2024-11-08 11:33:34,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351726055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:34,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118691385] [2024-11-08 11:33:34,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:34,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:34,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:33:34,052 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:33:34,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 11:33:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:34,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:33:34,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:33:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 7732 backedges. 4468 proven. 0 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2024-11-08 11:33:34,503 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:33:34,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118691385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:34,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:33:34,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 11:33:34,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890413946] [2024-11-08 11:33:34,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:34,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:34,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:34,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:34,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:33:34,506 INFO L87 Difference]: Start difference. First operand 18119 states and 18408 transitions. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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) [2024-11-08 11:33:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:35,107 INFO L93 Difference]: Finished difference Result 34920 states and 35512 transitions. [2024-11-08 11:33:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:35,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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 2064 [2024-11-08 11:33:35,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:35,123 INFO L225 Difference]: With dead ends: 34920 [2024-11-08 11:33:35,123 INFO L226 Difference]: Without dead ends: 20751 [2024-11-08 11:33:35,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2069 GetRequests, 2064 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:33:35,132 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 222 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:35,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 437 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20751 states. [2024-11-08 11:33:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20751 to 19435. [2024-11-08 11:33:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19435 states, 19434 states have (on average 1.0154368632293918) internal successors, (19734), 19434 states have internal predecessors, (19734), 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) [2024-11-08 11:33:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19435 states to 19435 states and 19734 transitions. [2024-11-08 11:33:35,262 INFO L78 Accepts]: Start accepts. Automaton has 19435 states and 19734 transitions. Word has length 2064 [2024-11-08 11:33:35,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:35,263 INFO L471 AbstractCegarLoop]: Abstraction has 19435 states and 19734 transitions. [2024-11-08 11:33:35,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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) [2024-11-08 11:33:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 19435 states and 19734 transitions. [2024-11-08 11:33:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2151 [2024-11-08 11:33:35,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:35,291 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-08 11:33:35,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 11:33:35,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 11:33:35,492 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:35,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:35,492 INFO L85 PathProgramCache]: Analyzing trace with hash 467866832, now seen corresponding path program 1 times [2024-11-08 11:33:35,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:35,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42123697] [2024-11-08 11:33:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:35,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8755 backedges. 5203 proven. 0 refuted. 0 times theorem prover too weak. 3552 trivial. 0 not checked. [2024-11-08 11:33:37,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:37,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42123697] [2024-11-08 11:33:37,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42123697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:37,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:33:37,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:33:37,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946359318] [2024-11-08 11:33:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:37,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:37,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:37,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:37,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:33:37,043 INFO L87 Difference]: Start difference. First operand 19435 states and 19734 transitions. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2024-11-08 11:33:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:37,584 INFO L93 Difference]: Finished difference Result 35578 states and 36158 transitions. [2024-11-08 11:33:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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 2150 [2024-11-08 11:33:37,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:37,599 INFO L225 Difference]: With dead ends: 35578 [2024-11-08 11:33:37,599 INFO L226 Difference]: Without dead ends: 20093 [2024-11-08 11:33:37,607 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 [2024-11-08 11:33:37,608 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:37,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 441 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20093 states. [2024-11-08 11:33:37,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20093 to 20093. [2024-11-08 11:33:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20093 states, 20092 states have (on average 1.0151304001592674) internal successors, (20396), 20092 states have internal predecessors, (20396), 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) [2024-11-08 11:33:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20093 states to 20093 states and 20396 transitions. [2024-11-08 11:33:37,740 INFO L78 Accepts]: Start accepts. Automaton has 20093 states and 20396 transitions. Word has length 2150 [2024-11-08 11:33:37,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:37,741 INFO L471 AbstractCegarLoop]: Abstraction has 20093 states and 20396 transitions. [2024-11-08 11:33:37,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2024-11-08 11:33:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 20093 states and 20396 transitions. [2024-11-08 11:33:37,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2198 [2024-11-08 11:33:37,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:37,769 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 11:33:37,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-08 11:33:37,769 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:37,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:37,770 INFO L85 PathProgramCache]: Analyzing trace with hash 487446956, now seen corresponding path program 1 times [2024-11-08 11:33:37,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:37,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750076479] [2024-11-08 11:33:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:37,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8728 backedges. 4121 proven. 0 refuted. 0 times theorem prover too weak. 4607 trivial. 0 not checked. [2024-11-08 11:33:39,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:39,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750076479] [2024-11-08 11:33:39,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750076479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:33:39,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:33:39,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:33:39,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781167691] [2024-11-08 11:33:39,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:39,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:39,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:39,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:39,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:33:39,447 INFO L87 Difference]: Start difference. First operand 20093 states and 20396 transitions. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2024-11-08 11:33:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:40,097 INFO L93 Difference]: Finished difference Result 38539 states and 39156 transitions. [2024-11-08 11:33:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:40,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 2197 [2024-11-08 11:33:40,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:40,113 INFO L225 Difference]: With dead ends: 38539 [2024-11-08 11:33:40,113 INFO L226 Difference]: Without dead ends: 22396 [2024-11-08 11:33:40,122 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 [2024-11-08 11:33:40,123 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 209 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:40,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 47 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:33:40,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22396 states. [2024-11-08 11:33:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22396 to 19764. [2024-11-08 11:33:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19764 states, 19763 states have (on average 1.0149774831756313) internal successors, (20059), 19763 states have internal predecessors, (20059), 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) [2024-11-08 11:33:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 20059 transitions. [2024-11-08 11:33:40,269 INFO L78 Accepts]: Start accepts. Automaton has 19764 states and 20059 transitions. Word has length 2197 [2024-11-08 11:33:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:40,270 INFO L471 AbstractCegarLoop]: Abstraction has 19764 states and 20059 transitions. [2024-11-08 11:33:40,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2024-11-08 11:33:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 19764 states and 20059 transitions. [2024-11-08 11:33:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2232 [2024-11-08 11:33:40,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:40,299 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 11:33:40,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-08 11:33:40,300 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:40,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:40,300 INFO L85 PathProgramCache]: Analyzing trace with hash 212292311, now seen corresponding path program 1 times [2024-11-08 11:33:40,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:40,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937202243] [2024-11-08 11:33:40,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:40,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9000 backedges. 6479 proven. 140 refuted. 0 times theorem prover too weak. 2381 trivial. 0 not checked. [2024-11-08 11:33:42,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:33:42,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937202243] [2024-11-08 11:33:42,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937202243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:42,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264666150] [2024-11-08 11:33:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:42,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:33:42,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:33:42,411 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:33:42,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 11:33:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:33:42,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 11:33:42,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:33:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9000 backedges. 5850 proven. 67 refuted. 0 times theorem prover too weak. 3083 trivial. 0 not checked. [2024-11-08 11:33:50,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:33:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9000 backedges. 4749 proven. 0 refuted. 0 times theorem prover too weak. 4251 trivial. 0 not checked. [2024-11-08 11:33:53,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264666150] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 11:33:53,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 11:33:53,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 9 [2024-11-08 11:33:53,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053876833] [2024-11-08 11:33:53,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:33:53,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:33:53,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:33:53,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:33:53,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:33:53,151 INFO L87 Difference]: Start difference. First operand 19764 states and 20059 transitions. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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) [2024-11-08 11:33:53,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:33:53,765 INFO L93 Difference]: Finished difference Result 37552 states and 38146 transitions. [2024-11-08 11:33:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:33:53,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 2231 [2024-11-08 11:33:53,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:33:53,782 INFO L225 Difference]: With dead ends: 37552 [2024-11-08 11:33:53,782 INFO L226 Difference]: Without dead ends: 21080 [2024-11-08 11:33:53,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4466 GetRequests, 4459 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:33:53,792 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 269 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:33:53,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 37 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:33:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21080 states. [2024-11-08 11:33:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21080 to 20093. [2024-11-08 11:33:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20093 states, 20092 states have (on average 1.0144336054150906) internal successors, (20382), 20092 states have internal predecessors, (20382), 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) [2024-11-08 11:33:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20093 states to 20093 states and 20382 transitions. [2024-11-08 11:33:53,930 INFO L78 Accepts]: Start accepts. Automaton has 20093 states and 20382 transitions. Word has length 2231 [2024-11-08 11:33:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:33:53,931 INFO L471 AbstractCegarLoop]: Abstraction has 20093 states and 20382 transitions. [2024-11-08 11:33:53,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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) [2024-11-08 11:33:53,931 INFO L276 IsEmpty]: Start isEmpty. Operand 20093 states and 20382 transitions. [2024-11-08 11:33:53,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2282 [2024-11-08 11:33:53,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:33:53,960 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-08 11:33:53,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 11:33:54,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 11:33:54,161 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:33:54,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:33:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash -985856797, now seen corresponding path program 1 times [2024-11-08 11:33:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:33:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291955205] [2024-11-08 11:33:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:33:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:33:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat