./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.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 e22f4e480e00059ce3613278d58ea2e0a6d73a8e3bda2e3d0eda9cb576504b9d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:31:58,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:31:58,341 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:31:58,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:31:58,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:31:58,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:31:58,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:31:58,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:31:58,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:31:58,376 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:31:58,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:31:58,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:31:58,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:31:58,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:31:58,378 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:31:58,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:31:58,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:31:58,379 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:31:58,379 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:31:58,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:31:58,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:31:58,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:31:58,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:31:58,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:31:58,384 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:31:58,384 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:31:58,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:31:58,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:31:58,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:31:58,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:31:58,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:31:58,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:31:58,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:31:58,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:31:58,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:31:58,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:31:58,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:31:58,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:31:58,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:31:58,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:31:58,388 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:31:58,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:31:58,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22f4e480e00059ce3613278d58ea2e0a6d73a8e3bda2e3d0eda9cb576504b9d [2024-10-23 21:31:58,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:31:58,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:31:58,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:31:58,685 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:31:58,686 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:31:58,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.c [2024-10-23 21:32:00,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:32:00,505 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:32:00,506 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.c [2024-10-23 21:32:00,535 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b3afdfe5/1bb7114773b74fb9a637033f5fff017c/FLAG9bd7e707d [2024-10-23 21:32:00,553 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b3afdfe5/1bb7114773b74fb9a637033f5fff017c [2024-10-23 21:32:00,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:32:00,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:32:00,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:32:00,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:32:00,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:32:00,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:32:00" (1/1) ... [2024-10-23 21:32:00,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1cac01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:00, skipping insertion in model container [2024-10-23 21:32:00,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:32:00" (1/1) ... [2024-10-23 21:32:00,659 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:32:00,907 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.c[7744,7757] [2024-10-23 21:32:01,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:32:01,450 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:32:01,480 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.c[7744,7757] [2024-10-23 21:32:01,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:32:01,805 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:32:01,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01 WrapperNode [2024-10-23 21:32:01,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:32:01,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:32:01,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:32:01,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:32:01,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:01,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,094 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-23 21:32:02,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:32:02,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:32:02,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:32:02,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:32:02,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,139 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,389 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:32:02,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,543 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:32:02,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:32:02,646 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:32:02,646 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:32:02,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (1/1) ... [2024-10-23 21:32:02,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:32:02,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:32:02,677 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) [2024-10-23 21:32:02,680 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 [2024-10-23 21:32:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:32:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:32:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:32:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:32:02,786 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:32:02,787 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:32:06,067 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-23 21:32:06,068 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:32:06,132 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:32:06,135 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:32:06,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:32:06 BoogieIcfgContainer [2024-10-23 21:32:06,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:32:06,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:32:06,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:32:06,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:32:06,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:32:00" (1/3) ... [2024-10-23 21:32:06,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b7f0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:32:06, skipping insertion in model container [2024-10-23 21:32:06,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:32:01" (2/3) ... [2024-10-23 21:32:06,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b7f0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:32:06, skipping insertion in model container [2024-10-23 21:32:06,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:32:06" (3/3) ... [2024-10-23 21:32:06,143 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label38.c [2024-10-23 21:32:06,162 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:32:06,162 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:32:06,249 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:32:06,256 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;@402f3dce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:32:06,256 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:32:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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) [2024-10-23 21:32:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-23 21:32:06,272 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:06,273 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:06,274 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:06,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:06,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2047036596, now seen corresponding path program 1 times [2024-10-23 21:32:06,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:06,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586596504] [2024-10-23 21:32:06,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:06,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:06,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:06,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586596504] [2024-10-23 21:32:06,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586596504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:06,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:06,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:32:06,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748209680] [2024-10-23 21:32:06,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:06,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:32:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:32:06,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:32:06,502 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2024-10-23 21:32:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:06,576 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-23 21:32:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:32:06,580 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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 51 [2024-10-23 21:32:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:06,598 INFO L225 Difference]: With dead ends: 1055 [2024-10-23 21:32:06,598 INFO L226 Difference]: Without dead ends: 526 [2024-10-23 21:32:06,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:32:06,609 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:06,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:32:06,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-23 21:32:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-23 21:32:06,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 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) [2024-10-23 21:32:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-23 21:32:06,687 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 51 [2024-10-23 21:32:06,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:06,688 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-23 21:32:06,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2024-10-23 21:32:06,688 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-23 21:32:06,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-23 21:32:06,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:06,690 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:06,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:32:06,691 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:06,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1506335338, now seen corresponding path program 1 times [2024-10-23 21:32:06,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:06,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631975619] [2024-10-23 21:32:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:06,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:06,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631975619] [2024-10-23 21:32:06,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631975619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:06,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:06,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:32:06,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610268895] [2024-10-23 21:32:06,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:06,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:06,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:06,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:06,922 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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) [2024-10-23 21:32:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:09,061 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2024-10-23 21:32:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:09,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 51 [2024-10-23 21:32:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:09,068 INFO L225 Difference]: With dead ends: 1501 [2024-10-23 21:32:09,068 INFO L226 Difference]: Without dead ends: 976 [2024-10-23 21:32:09,069 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 [2024-10-23 21:32:09,070 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 420 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:09,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:32:09,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-10-23 21:32:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2024-10-23 21:32:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 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) [2024-10-23 21:32:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2024-10-23 21:32:09,113 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 51 [2024-10-23 21:32:09,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:09,114 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2024-10-23 21:32:09,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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) [2024-10-23 21:32:09,114 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2024-10-23 21:32:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-23 21:32:09,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:09,118 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:09,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:32:09,118 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:09,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:09,119 INFO L85 PathProgramCache]: Analyzing trace with hash 844657202, now seen corresponding path program 1 times [2024-10-23 21:32:09,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:09,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114066068] [2024-10-23 21:32:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:09,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:09,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114066068] [2024-10-23 21:32:09,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114066068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:09,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:09,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:32:09,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918687106] [2024-10-23 21:32:09,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:09,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:09,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:09,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:09,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:09,358 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 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) [2024-10-23 21:32:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:11,496 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2024-10-23 21:32:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:11,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 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 118 [2024-10-23 21:32:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:11,507 INFO L225 Difference]: With dead ends: 2812 [2024-10-23 21:32:11,507 INFO L226 Difference]: Without dead ends: 1843 [2024-10-23 21:32:11,511 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 [2024-10-23 21:32:11,513 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:11,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:32:11,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2024-10-23 21:32:11,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2024-10-23 21:32:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 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) [2024-10-23 21:32:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2024-10-23 21:32:11,583 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 118 [2024-10-23 21:32:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:11,585 INFO L471 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2024-10-23 21:32:11,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 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) [2024-10-23 21:32:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2024-10-23 21:32:11,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-23 21:32:11,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:11,592 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:11,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:32:11,593 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:11,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:11,596 INFO L85 PathProgramCache]: Analyzing trace with hash -522006058, now seen corresponding path program 1 times [2024-10-23 21:32:11,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:11,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121431496] [2024-10-23 21:32:11,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:11,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:11,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:11,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121431496] [2024-10-23 21:32:11,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121431496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:11,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:11,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:11,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081983343] [2024-10-23 21:32:11,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:11,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:11,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:11,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:11,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:11,891 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:32:14,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:14,061 INFO L93 Difference]: Finished difference Result 4551 states and 6281 transitions. [2024-10-23 21:32:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:14,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-10-23 21:32:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:14,073 INFO L225 Difference]: With dead ends: 4551 [2024-10-23 21:32:14,074 INFO L226 Difference]: Without dead ends: 2712 [2024-10-23 21:32:14,078 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 [2024-10-23 21:32:14,081 INFO L432 NwaCegarLoop]: 816 mSDtfsCounter, 455 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:14,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 883 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:32:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2024-10-23 21:32:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2710. [2024-10-23 21:32:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.3004798818752308) internal successors, (3523), 2709 states have internal predecessors, (3523), 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) [2024-10-23 21:32:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3523 transitions. [2024-10-23 21:32:14,131 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3523 transitions. Word has length 121 [2024-10-23 21:32:14,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:14,132 INFO L471 AbstractCegarLoop]: Abstraction has 2710 states and 3523 transitions. [2024-10-23 21:32:14,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:32:14,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3523 transitions. [2024-10-23 21:32:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-23 21:32:14,140 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:14,140 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:14,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:32:14,141 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:14,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:14,141 INFO L85 PathProgramCache]: Analyzing trace with hash -53849279, now seen corresponding path program 1 times [2024-10-23 21:32:14,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:14,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945378652] [2024-10-23 21:32:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 21:32:14,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:14,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945378652] [2024-10-23 21:32:14,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945378652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:14,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:14,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:32:14,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883113125] [2024-10-23 21:32:14,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:14,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:14,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:14,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:14,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:14,416 INFO L87 Difference]: Start difference. First operand 2710 states and 3523 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-10-23 21:32:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:16,096 INFO L93 Difference]: Finished difference Result 7983 states and 10360 transitions. [2024-10-23 21:32:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:16,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 190 [2024-10-23 21:32:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:16,114 INFO L225 Difference]: With dead ends: 7983 [2024-10-23 21:32:16,114 INFO L226 Difference]: Without dead ends: 4420 [2024-10-23 21:32:16,121 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 [2024-10-23 21:32:16,123 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:16,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:32:16,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2024-10-23 21:32:16,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3570. [2024-10-23 21:32:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 1.177640795741104) internal successors, (4203), 3569 states have internal predecessors, (4203), 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) [2024-10-23 21:32:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4203 transitions. [2024-10-23 21:32:16,192 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4203 transitions. Word has length 190 [2024-10-23 21:32:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:16,194 INFO L471 AbstractCegarLoop]: Abstraction has 3570 states and 4203 transitions. [2024-10-23 21:32:16,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-10-23 21:32:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4203 transitions. [2024-10-23 21:32:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-10-23 21:32:16,198 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:16,198 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:16,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:32:16,199 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:16,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash -305729779, now seen corresponding path program 1 times [2024-10-23 21:32:16,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:16,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684999260] [2024-10-23 21:32:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:16,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:16,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:16,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684999260] [2024-10-23 21:32:16,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684999260] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:16,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:16,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:16,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191597588] [2024-10-23 21:32:16,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:16,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:16,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:16,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:16,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:16,505 INFO L87 Difference]: Start difference. First operand 3570 states and 4203 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2024-10-23 21:32:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:18,262 INFO L93 Difference]: Finished difference Result 9272 states and 11086 transitions. [2024-10-23 21:32:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:18,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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 203 [2024-10-23 21:32:18,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:18,284 INFO L225 Difference]: With dead ends: 9272 [2024-10-23 21:32:18,285 INFO L226 Difference]: Without dead ends: 5703 [2024-10-23 21:32:18,290 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 [2024-10-23 21:32:18,293 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:18,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:32:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2024-10-23 21:32:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5703. [2024-10-23 21:32:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5703 states, 5702 states have (on average 1.1595931252192213) internal successors, (6612), 5702 states have internal predecessors, (6612), 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) [2024-10-23 21:32:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5703 states to 5703 states and 6612 transitions. [2024-10-23 21:32:18,391 INFO L78 Accepts]: Start accepts. Automaton has 5703 states and 6612 transitions. Word has length 203 [2024-10-23 21:32:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:18,392 INFO L471 AbstractCegarLoop]: Abstraction has 5703 states and 6612 transitions. [2024-10-23 21:32:18,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2024-10-23 21:32:18,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5703 states and 6612 transitions. [2024-10-23 21:32:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-10-23 21:32:18,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:18,398 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:18,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:32:18,398 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:18,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:18,399 INFO L85 PathProgramCache]: Analyzing trace with hash 551866376, now seen corresponding path program 1 times [2024-10-23 21:32:18,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:18,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174253136] [2024-10-23 21:32:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:18,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:32:18,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174253136] [2024-10-23 21:32:18,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174253136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:18,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:18,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:18,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172800287] [2024-10-23 21:32:18,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:18,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:18,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:18,541 INFO L87 Difference]: Start difference. First operand 5703 states and 6612 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:32:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:20,193 INFO L93 Difference]: Finished difference Result 14375 states and 16775 transitions. [2024-10-23 21:32:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:20,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2024-10-23 21:32:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:20,223 INFO L225 Difference]: With dead ends: 14375 [2024-10-23 21:32:20,223 INFO L226 Difference]: Without dead ends: 8672 [2024-10-23 21:32:20,231 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 [2024-10-23 21:32:20,232 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 398 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:20,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:32:20,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2024-10-23 21:32:20,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 5676. [2024-10-23 21:32:20,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 1.157885462555066) internal successors, (6571), 5675 states have internal predecessors, (6571), 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) [2024-10-23 21:32:20,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 6571 transitions. [2024-10-23 21:32:20,354 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 6571 transitions. Word has length 205 [2024-10-23 21:32:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:20,355 INFO L471 AbstractCegarLoop]: Abstraction has 5676 states and 6571 transitions. [2024-10-23 21:32:20,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:32:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 6571 transitions. [2024-10-23 21:32:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-10-23 21:32:20,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:20,359 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:20,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:32:20,359 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:20,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2077681003, now seen corresponding path program 1 times [2024-10-23 21:32:20,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:20,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031846239] [2024-10-23 21:32:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:20,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-10-23 21:32:20,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:20,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031846239] [2024-10-23 21:32:20,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031846239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:20,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:20,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:20,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908047864] [2024-10-23 21:32:20,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:20,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:20,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:20,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:20,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:20,599 INFO L87 Difference]: Start difference. First operand 5676 states and 6571 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2024-10-23 21:32:22,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:22,330 INFO L93 Difference]: Finished difference Result 14314 states and 16679 transitions. [2024-10-23 21:32:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:22,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 283 [2024-10-23 21:32:22,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:22,354 INFO L225 Difference]: With dead ends: 14314 [2024-10-23 21:32:22,354 INFO L226 Difference]: Without dead ends: 7789 [2024-10-23 21:32:22,363 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 [2024-10-23 21:32:22,364 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:22,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 844 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:32:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7789 states. [2024-10-23 21:32:22,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7789 to 7789. [2024-10-23 21:32:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7789 states, 7788 states have (on average 1.11864406779661) internal successors, (8712), 7788 states have internal predecessors, (8712), 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) [2024-10-23 21:32:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 8712 transitions. [2024-10-23 21:32:22,509 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 8712 transitions. Word has length 283 [2024-10-23 21:32:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:22,510 INFO L471 AbstractCegarLoop]: Abstraction has 7789 states and 8712 transitions. [2024-10-23 21:32:22,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2024-10-23 21:32:22,511 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 8712 transitions. [2024-10-23 21:32:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-10-23 21:32:22,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:22,516 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-23 21:32:22,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:32:22,516 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:22,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:22,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1117024562, now seen corresponding path program 1 times [2024-10-23 21:32:22,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:22,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612306383] [2024-10-23 21:32:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:22,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-23 21:32:22,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:22,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612306383] [2024-10-23 21:32:22,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612306383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:22,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:22,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:22,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26178839] [2024-10-23 21:32:22,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:22,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:22,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:22,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:22,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:22,748 INFO L87 Difference]: Start difference. First operand 7789 states and 8712 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2024-10-23 21:32:24,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:24,484 INFO L93 Difference]: Finished difference Result 18558 states and 20912 transitions. [2024-10-23 21:32:24,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:24,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 323 [2024-10-23 21:32:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:24,513 INFO L225 Difference]: With dead ends: 18558 [2024-10-23 21:32:24,513 INFO L226 Difference]: Without dead ends: 10770 [2024-10-23 21:32:24,523 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 [2024-10-23 21:32:24,525 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 419 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:24,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 400 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:32:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10770 states. [2024-10-23 21:32:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10770 to 9915. [2024-10-23 21:32:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9915 states, 9914 states have (on average 1.1194270728263063) internal successors, (11098), 9914 states have internal predecessors, (11098), 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) [2024-10-23 21:32:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 11098 transitions. [2024-10-23 21:32:24,697 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 11098 transitions. Word has length 323 [2024-10-23 21:32:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:24,698 INFO L471 AbstractCegarLoop]: Abstraction has 9915 states and 11098 transitions. [2024-10-23 21:32:24,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2024-10-23 21:32:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 11098 transitions. [2024-10-23 21:32:24,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-10-23 21:32:24,706 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:24,706 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:24,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:32:24,707 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:24,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:24,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1250831920, now seen corresponding path program 1 times [2024-10-23 21:32:24,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:24,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224615355] [2024-10-23 21:32:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:25,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:25,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224615355] [2024-10-23 21:32:25,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224615355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:25,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:25,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:25,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133755703] [2024-10-23 21:32:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:25,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:32:25,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:32:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:32:25,182 INFO L87 Difference]: Start difference. First operand 9915 states and 11098 transitions. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 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) [2024-10-23 21:32:27,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:27,607 INFO L93 Difference]: Finished difference Result 26238 states and 29413 transitions. [2024-10-23 21:32:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:32:27,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 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 390 [2024-10-23 21:32:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:27,634 INFO L225 Difference]: With dead ends: 26238 [2024-10-23 21:32:27,634 INFO L226 Difference]: Without dead ends: 15899 [2024-10-23 21:32:27,644 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 [2024-10-23 21:32:27,644 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 623 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:27,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 194 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:32:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15899 states. [2024-10-23 21:32:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15899 to 15897. [2024-10-23 21:32:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15896 states have (on average 1.1247483643683946) internal successors, (17879), 15896 states have internal predecessors, (17879), 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) [2024-10-23 21:32:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 17879 transitions. [2024-10-23 21:32:27,846 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 17879 transitions. Word has length 390 [2024-10-23 21:32:27,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:27,847 INFO L471 AbstractCegarLoop]: Abstraction has 15897 states and 17879 transitions. [2024-10-23 21:32:27,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 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) [2024-10-23 21:32:27,848 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 17879 transitions. [2024-10-23 21:32:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-10-23 21:32:27,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:27,859 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:32:27,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:32:27,859 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:27,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash -700290241, now seen corresponding path program 1 times [2024-10-23 21:32:27,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:27,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349270476] [2024-10-23 21:32:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:27,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-23 21:32:28,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349270476] [2024-10-23 21:32:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349270476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158795964] [2024-10-23 21:32:28,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:28,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:28,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:28,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:28,117 INFO L87 Difference]: Start difference. First operand 15897 states and 17879 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2024-10-23 21:32:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:29,887 INFO L93 Difference]: Finished difference Result 44147 states and 49783 transitions. [2024-10-23 21:32:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:29,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 424 [2024-10-23 21:32:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:29,939 INFO L225 Difference]: With dead ends: 44147 [2024-10-23 21:32:29,939 INFO L226 Difference]: Without dead ends: 28251 [2024-10-23 21:32:29,956 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 [2024-10-23 21:32:29,958 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 494 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:29,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 287 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:32:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28251 states. [2024-10-23 21:32:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28251 to 26957. [2024-10-23 21:32:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26957 states, 26956 states have (on average 1.120529752188752) internal successors, (30205), 26956 states have internal predecessors, (30205), 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) [2024-10-23 21:32:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26957 states to 26957 states and 30205 transitions. [2024-10-23 21:32:30,260 INFO L78 Accepts]: Start accepts. Automaton has 26957 states and 30205 transitions. Word has length 424 [2024-10-23 21:32:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:30,261 INFO L471 AbstractCegarLoop]: Abstraction has 26957 states and 30205 transitions. [2024-10-23 21:32:30,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2024-10-23 21:32:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 26957 states and 30205 transitions. [2024-10-23 21:32:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-10-23 21:32:30,280 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:30,280 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:30,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:32:30,280 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:30,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:30,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1295745375, now seen corresponding path program 1 times [2024-10-23 21:32:30,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:30,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406188564] [2024-10-23 21:32:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:30,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:32:30,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:30,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406188564] [2024-10-23 21:32:30,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406188564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:30,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:30,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:30,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900767418] [2024-10-23 21:32:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:30,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:30,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:30,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:30,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:30,904 INFO L87 Difference]: Start difference. First operand 26957 states and 30205 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2024-10-23 21:32:32,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:32,547 INFO L93 Difference]: Finished difference Result 64136 states and 71881 transitions. [2024-10-23 21:32:32,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:32,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 486 [2024-10-23 21:32:32,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:32,610 INFO L225 Difference]: With dead ends: 64136 [2024-10-23 21:32:32,611 INFO L226 Difference]: Without dead ends: 37180 [2024-10-23 21:32:32,637 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 [2024-10-23 21:32:32,638 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 471 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:32,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 182 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:32:32,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37180 states. [2024-10-23 21:32:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37180 to 34186. [2024-10-23 21:32:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34186 states, 34185 states have (on average 1.1263712154453707) internal successors, (38505), 34185 states have internal predecessors, (38505), 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) [2024-10-23 21:32:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34186 states to 34186 states and 38505 transitions. [2024-10-23 21:32:33,153 INFO L78 Accepts]: Start accepts. Automaton has 34186 states and 38505 transitions. Word has length 486 [2024-10-23 21:32:33,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:33,154 INFO L471 AbstractCegarLoop]: Abstraction has 34186 states and 38505 transitions. [2024-10-23 21:32:33,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2024-10-23 21:32:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 34186 states and 38505 transitions. [2024-10-23 21:32:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2024-10-23 21:32:33,185 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:33,186 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:32:33,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:32:33,186 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:33,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:33,186 INFO L85 PathProgramCache]: Analyzing trace with hash -250648956, now seen corresponding path program 1 times [2024-10-23 21:32:33,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:33,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078256965] [2024-10-23 21:32:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:33,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 367 proven. 82 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-23 21:32:34,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:34,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078256965] [2024-10-23 21:32:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078256965] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:32:34,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855847326] [2024-10-23 21:32:34,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:34,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:32:34,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:32:34,009 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) [2024-10-23 21:32:34,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:32:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:34,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 21:32:34,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:32:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 335 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:35,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:32:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:35,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855847326] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:32:35,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:32:35,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2024-10-23 21:32:35,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858705256] [2024-10-23 21:32:35,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:35,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 21:32:35,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:35,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 21:32:35,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:32:35,723 INFO L87 Difference]: Start difference. First operand 34186 states and 38505 transitions. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 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) [2024-10-23 21:32:39,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:39,172 INFO L93 Difference]: Finished difference Result 109696 states and 123428 transitions. [2024-10-23 21:32:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 21:32:39,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 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 575 [2024-10-23 21:32:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:39,276 INFO L225 Difference]: With dead ends: 109696 [2024-10-23 21:32:39,276 INFO L226 Difference]: Without dead ends: 72523 [2024-10-23 21:32:39,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1151 GetRequests, 1145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:32:39,311 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 1046 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 3249 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 4096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 3249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:39,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 228 Invalid, 4096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 3249 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:32:39,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72523 states. [2024-10-23 21:32:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72523 to 59312. [2024-10-23 21:32:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59312 states, 59311 states have (on average 1.109423209859891) internal successors, (65801), 59311 states have internal predecessors, (65801), 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) [2024-10-23 21:32:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59312 states to 59312 states and 65801 transitions. [2024-10-23 21:32:40,275 INFO L78 Accepts]: Start accepts. Automaton has 59312 states and 65801 transitions. Word has length 575 [2024-10-23 21:32:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:40,276 INFO L471 AbstractCegarLoop]: Abstraction has 59312 states and 65801 transitions. [2024-10-23 21:32:40,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 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) [2024-10-23 21:32:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 59312 states and 65801 transitions. [2024-10-23 21:32:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-10-23 21:32:40,409 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:40,412 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:40,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:32:40,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 21:32:40,614 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:40,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1565377099, now seen corresponding path program 1 times [2024-10-23 21:32:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642528630] [2024-10-23 21:32:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-10-23 21:32:41,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:41,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642528630] [2024-10-23 21:32:41,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642528630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:41,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:41,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:41,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030284391] [2024-10-23 21:32:41,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:41,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:41,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:41,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:41,054 INFO L87 Difference]: Start difference. First operand 59312 states and 65801 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2024-10-23 21:32:42,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:42,768 INFO L93 Difference]: Finished difference Result 127548 states and 141247 transitions. [2024-10-23 21:32:42,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:42,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 594 [2024-10-23 21:32:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:42,847 INFO L225 Difference]: With dead ends: 127548 [2024-10-23 21:32:42,847 INFO L226 Difference]: Without dead ends: 63119 [2024-10-23 21:32:42,894 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 [2024-10-23 21:32:42,894 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 496 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:42,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 710 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:32:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63119 states. [2024-10-23 21:32:43,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63119 to 61835. [2024-10-23 21:32:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61835 states, 61834 states have (on average 1.0959181033088592) internal successors, (67765), 61834 states have internal predecessors, (67765), 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) [2024-10-23 21:32:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61835 states to 61835 states and 67765 transitions. [2024-10-23 21:32:43,824 INFO L78 Accepts]: Start accepts. Automaton has 61835 states and 67765 transitions. Word has length 594 [2024-10-23 21:32:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:43,824 INFO L471 AbstractCegarLoop]: Abstraction has 61835 states and 67765 transitions. [2024-10-23 21:32:43,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2024-10-23 21:32:43,824 INFO L276 IsEmpty]: Start isEmpty. Operand 61835 states and 67765 transitions. [2024-10-23 21:32:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2024-10-23 21:32:43,849 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:43,850 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:43,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:32:43,850 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:43,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:43,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1956570339, now seen corresponding path program 1 times [2024-10-23 21:32:43,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:43,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357844444] [2024-10-23 21:32:43,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:43,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-23 21:32:45,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:45,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357844444] [2024-10-23 21:32:45,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357844444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:45,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:45,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:45,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008615721] [2024-10-23 21:32:45,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:45,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:45,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:45,275 INFO L87 Difference]: Start difference. First operand 61835 states and 67765 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2024-10-23 21:32:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:46,533 INFO L93 Difference]: Finished difference Result 123667 states and 135527 transitions. [2024-10-23 21:32:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:46,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 618 [2024-10-23 21:32:46,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:46,595 INFO L225 Difference]: With dead ends: 123667 [2024-10-23 21:32:46,595 INFO L226 Difference]: Without dead ends: 61833 [2024-10-23 21:32:46,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:46,628 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 574 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:46,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 553 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:32:46,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61833 states. [2024-10-23 21:32:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61833 to 61833. [2024-10-23 21:32:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61833 states, 61832 states have (on average 1.0957433044378315) internal successors, (67752), 61832 states have internal predecessors, (67752), 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) [2024-10-23 21:32:47,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61833 states to 61833 states and 67752 transitions. [2024-10-23 21:32:47,484 INFO L78 Accepts]: Start accepts. Automaton has 61833 states and 67752 transitions. Word has length 618 [2024-10-23 21:32:47,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:47,485 INFO L471 AbstractCegarLoop]: Abstraction has 61833 states and 67752 transitions. [2024-10-23 21:32:47,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2024-10-23 21:32:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 61833 states and 67752 transitions. [2024-10-23 21:32:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2024-10-23 21:32:47,509 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:47,510 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:47,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:32:47,510 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:47,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash 101164133, now seen corresponding path program 1 times [2024-10-23 21:32:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:47,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201918981] [2024-10-23 21:32:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:47,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-10-23 21:32:48,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201918981] [2024-10-23 21:32:48,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201918981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:48,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:48,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:48,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137160486] [2024-10-23 21:32:48,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:48,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:48,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:48,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:48,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:48,173 INFO L87 Difference]: Start difference. First operand 61833 states and 67752 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2024-10-23 21:32:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:49,700 INFO L93 Difference]: Finished difference Result 128771 states and 140947 transitions. [2024-10-23 21:32:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:49,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 708 [2024-10-23 21:32:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:49,765 INFO L225 Difference]: With dead ends: 128771 [2024-10-23 21:32:49,765 INFO L226 Difference]: Without dead ends: 66939 [2024-10-23 21:32:49,797 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 [2024-10-23 21:32:49,798 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 442 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:49,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 385 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:32:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66939 states. [2024-10-23 21:32:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66939 to 61828. [2024-10-23 21:32:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61828 states, 61827 states have (on average 1.0950070357610753) internal successors, (67701), 61827 states have internal predecessors, (67701), 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) [2024-10-23 21:32:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61828 states to 61828 states and 67701 transitions. [2024-10-23 21:32:50,710 INFO L78 Accepts]: Start accepts. Automaton has 61828 states and 67701 transitions. Word has length 708 [2024-10-23 21:32:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:50,711 INFO L471 AbstractCegarLoop]: Abstraction has 61828 states and 67701 transitions. [2024-10-23 21:32:50,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2024-10-23 21:32:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 61828 states and 67701 transitions. [2024-10-23 21:32:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2024-10-23 21:32:50,749 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:50,750 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:50,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:32:50,750 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:50,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:50,751 INFO L85 PathProgramCache]: Analyzing trace with hash -918984443, now seen corresponding path program 1 times [2024-10-23 21:32:50,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:50,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212392833] [2024-10-23 21:32:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:50,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 618 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-23 21:32:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212392833] [2024-10-23 21:32:51,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212392833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:51,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:51,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:32:51,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839759934] [2024-10-23 21:32:51,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:51,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:32:51,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:51,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:32:51,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:32:51,770 INFO L87 Difference]: Start difference. First operand 61828 states and 67701 transitions. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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) [2024-10-23 21:32:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:54,290 INFO L93 Difference]: Finished difference Result 149203 states and 162810 transitions. [2024-10-23 21:32:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:32:54,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 734 [2024-10-23 21:32:54,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:54,373 INFO L225 Difference]: With dead ends: 149203 [2024-10-23 21:32:54,374 INFO L226 Difference]: Without dead ends: 83550 [2024-10-23 21:32:54,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:32:54,412 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 644 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:54,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 219 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:32:54,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83550 states. [2024-10-23 21:32:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83550 to 61810. [2024-10-23 21:32:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61810 states, 61809 states have (on average 1.0950508825575564) internal successors, (67684), 61809 states have internal predecessors, (67684), 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) [2024-10-23 21:32:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61810 states to 61810 states and 67684 transitions. [2024-10-23 21:32:55,218 INFO L78 Accepts]: Start accepts. Automaton has 61810 states and 67684 transitions. Word has length 734 [2024-10-23 21:32:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:55,218 INFO L471 AbstractCegarLoop]: Abstraction has 61810 states and 67684 transitions. [2024-10-23 21:32:55,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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) [2024-10-23 21:32:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 61810 states and 67684 transitions. [2024-10-23 21:32:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2024-10-23 21:32:55,252 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:55,252 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:55,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:32:55,253 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:55,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -724519861, now seen corresponding path program 1 times [2024-10-23 21:32:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:55,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354409527] [2024-10-23 21:32:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2024-10-23 21:32:56,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:56,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354409527] [2024-10-23 21:32:56,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354409527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:56,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:56,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:56,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091127744] [2024-10-23 21:32:56,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:56,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:56,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:56,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:56,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:56,076 INFO L87 Difference]: Start difference. First operand 61810 states and 67684 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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) [2024-10-23 21:32:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:57,755 INFO L93 Difference]: Finished difference Result 124457 states and 135974 transitions. [2024-10-23 21:32:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:57,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 785 [2024-10-23 21:32:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:57,844 INFO L225 Difference]: With dead ends: 124457 [2024-10-23 21:32:57,844 INFO L226 Difference]: Without dead ends: 60943 [2024-10-23 21:32:57,886 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 [2024-10-23 21:32:57,887 INFO L432 NwaCegarLoop]: 686 mSDtfsCounter, 455 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:57,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 731 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:32:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60943 states. [2024-10-23 21:32:58,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60943 to 59240. [2024-10-23 21:32:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59240 states, 59239 states have (on average 1.0825469707456237) internal successors, (64129), 59239 states have internal predecessors, (64129), 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) [2024-10-23 21:32:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59240 states to 59240 states and 64129 transitions. [2024-10-23 21:32:58,714 INFO L78 Accepts]: Start accepts. Automaton has 59240 states and 64129 transitions. Word has length 785 [2024-10-23 21:32:58,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:58,718 INFO L471 AbstractCegarLoop]: Abstraction has 59240 states and 64129 transitions. [2024-10-23 21:32:58,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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) [2024-10-23 21:32:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 59240 states and 64129 transitions. [2024-10-23 21:32:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2024-10-23 21:32:58,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:58,758 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:32:58,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:32:58,758 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:58,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:58,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1523238927, now seen corresponding path program 1 times [2024-10-23 21:32:58,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:58,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310536447] [2024-10-23 21:32:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 1028 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-10-23 21:32:59,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:59,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310536447] [2024-10-23 21:32:59,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310536447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:59,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:59,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:32:59,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748372682] [2024-10-23 21:32:59,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:59,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:32:59,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:59,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:32:59,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:32:59,649 INFO L87 Difference]: Start difference. First operand 59240 states and 64129 transitions. Second operand has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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) [2024-10-23 21:33:02,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:02,092 INFO L93 Difference]: Finished difference Result 139796 states and 151338 transitions. [2024-10-23 21:33:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:33:02,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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 864 [2024-10-23 21:33:02,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:02,201 INFO L225 Difference]: With dead ends: 139796 [2024-10-23 21:33:02,201 INFO L226 Difference]: Without dead ends: 80557 [2024-10-23 21:33:02,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:33:02,244 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 754 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:02,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 159 Invalid, 2611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:33:02,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80557 states. [2024-10-23 21:33:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80557 to 75016. [2024-10-23 21:33:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75016 states, 75015 states have (on average 1.083369992668133) internal successors, (81269), 75015 states have internal predecessors, (81269), 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) [2024-10-23 21:33:03,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75016 states to 75016 states and 81269 transitions. [2024-10-23 21:33:03,291 INFO L78 Accepts]: Start accepts. Automaton has 75016 states and 81269 transitions. Word has length 864 [2024-10-23 21:33:03,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:03,291 INFO L471 AbstractCegarLoop]: Abstraction has 75016 states and 81269 transitions. [2024-10-23 21:33:03,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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) [2024-10-23 21:33:03,292 INFO L276 IsEmpty]: Start isEmpty. Operand 75016 states and 81269 transitions. [2024-10-23 21:33:03,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2024-10-23 21:33:03,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:03,321 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:33:03,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:33:03,322 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:03,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash 98487645, now seen corresponding path program 1 times [2024-10-23 21:33:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:03,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877298359] [2024-10-23 21:33:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 478 proven. 694 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-10-23 21:33:05,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:05,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877298359] [2024-10-23 21:33:05,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877298359] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:33:05,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114654126] [2024-10-23 21:33:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:05,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:33:05,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:33:05,264 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) [2024-10-23 21:33:05,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:33:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:05,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:33:05,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:33:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 943 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-10-23 21:33:06,031 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:33:06,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114654126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:06,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:33:06,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-23 21:33:06,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761892361] [2024-10-23 21:33:06,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:06,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:06,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:33:06,035 INFO L87 Difference]: Start difference. First operand 75016 states and 81269 transitions. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2024-10-23 21:33:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:07,539 INFO L93 Difference]: Finished difference Result 150030 states and 162536 transitions. [2024-10-23 21:33:07,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:07,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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 908 [2024-10-23 21:33:07,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:07,628 INFO L225 Difference]: With dead ends: 150030 [2024-10-23 21:33:07,629 INFO L226 Difference]: Without dead ends: 75015 [2024-10-23 21:33:07,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:33:07,679 INFO L432 NwaCegarLoop]: 616 mSDtfsCounter, 218 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:07,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 668 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:33:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75015 states. [2024-10-23 21:33:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75015 to 72886. [2024-10-23 21:33:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72886 states, 72885 states have (on average 1.0700555669890923) internal successors, (77991), 72885 states have internal predecessors, (77991), 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) [2024-10-23 21:33:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72886 states to 72886 states and 77991 transitions. [2024-10-23 21:33:08,553 INFO L78 Accepts]: Start accepts. Automaton has 72886 states and 77991 transitions. Word has length 908 [2024-10-23 21:33:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:08,554 INFO L471 AbstractCegarLoop]: Abstraction has 72886 states and 77991 transitions. [2024-10-23 21:33:08,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2024-10-23 21:33:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 72886 states and 77991 transitions. [2024-10-23 21:33:08,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2024-10-23 21:33:08,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:08,587 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:33:08,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:33:08,788 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,SelfDestructingSolverStorable19 [2024-10-23 21:33:08,788 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:08,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2078563626, now seen corresponding path program 1 times [2024-10-23 21:33:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:08,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317777732] [2024-10-23 21:33:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 996 proven. 0 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2024-10-23 21:33:09,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:09,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317777732] [2024-10-23 21:33:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317777732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:09,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:33:09,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117481604] [2024-10-23 21:33:09,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:09,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:09,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:09,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:09,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:09,596 INFO L87 Difference]: Start difference. First operand 72886 states and 77991 transitions. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 2 states have internal predecessors, (441), 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) [2024-10-23 21:33:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:10,421 INFO L93 Difference]: Finished difference Result 129984 states and 139012 transitions. [2024-10-23 21:33:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:10,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 2 states have internal predecessors, (441), 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 969 [2024-10-23 21:33:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:10,480 INFO L225 Difference]: With dead ends: 129984 [2024-10-23 21:33:10,481 INFO L226 Difference]: Without dead ends: 57098 [2024-10-23 21:33:10,519 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 [2024-10-23 21:33:10,519 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 557 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:10,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 69 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:33:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57098 states. [2024-10-23 21:33:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57098 to 56245.