./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/Problem12_label36.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label36.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cfcc97b5952aa72da47fe0e4e97f4617137d46f4db9024e30e3a5a5c97f7e95 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 23:23:30,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 23:23:30,747 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 23:23:30,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 23:23:30,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 23:23:30,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 23:23:30,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 23:23:30,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 23:23:30,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 23:23:30,778 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 23:23:30,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 23:23:30,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 23:23:30,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 23:23:30,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 23:23:30,781 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 23:23:30,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 23:23:30,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 23:23:30,782 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 23:23:30,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 23:23:30,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 23:23:30,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 23:23:30,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 23:23:30,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 23:23:30,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 23:23:30,786 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 23:23:30,786 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 23:23:30,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 23:23:30,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 23:23:30,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 23:23:30,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 23:23:30,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 23:23:30,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 23:23:30,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:23:30,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 23:23:30,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 23:23:30,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 23:23:30,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 23:23:30,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 23:23:30,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 23:23:30,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 23:23:30,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 23:23:30,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 23:23:30,791 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cfcc97b5952aa72da47fe0e4e97f4617137d46f4db9024e30e3a5a5c97f7e95 [2024-10-10 23:23:30,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 23:23:31,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 23:23:31,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 23:23:31,013 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 23:23:31,013 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 23:23:31,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label36.c [2024-10-10 23:23:32,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 23:23:32,834 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 23:23:32,835 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label36.c [2024-10-10 23:23:32,860 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/abf0fdc40/43623be626c5473c9d928e9fef635fc3/FLAG0a467e700 [2024-10-10 23:23:32,872 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/abf0fdc40/43623be626c5473c9d928e9fef635fc3 [2024-10-10 23:23:32,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 23:23:32,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 23:23:32,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 23:23:32,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 23:23:32,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 23:23:32,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:23:32" (1/1) ... [2024-10-10 23:23:32,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d9b3107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:32, skipping insertion in model container [2024-10-10 23:23:32,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:23:32" (1/1) ... [2024-10-10 23:23:32,961 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 23:23:33,177 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/Problem12_label36.c[7066,7079] [2024-10-10 23:23:33,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:23:33,799 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 23:23:33,817 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/Problem12_label36.c[7066,7079] [2024-10-10 23:23:34,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:23:34,269 INFO L204 MainTranslator]: Completed translation [2024-10-10 23:23:34,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34 WrapperNode [2024-10-10 23:23:34,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 23:23:34,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 23:23:34,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 23:23:34,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 23:23:34,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:34,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:34,553 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-10 23:23:34,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 23:23:34,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 23:23:34,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 23:23:34,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 23:23:34,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:34,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:34,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:34,823 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]. [2024-10-10 23:23:34,823 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:34,823 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:34,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:34,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:34,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:34,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:35,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 23:23:35,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 23:23:35,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 23:23:35,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 23:23:35,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (1/1) ... [2024-10-10 23:23:35,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:23:35,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:23:35,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 23:23:35,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 23:23:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 23:23:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 23:23:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 23:23:35,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 23:23:35,212 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 23:23:35,213 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 23:23:38,470 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-10 23:23:38,470 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 23:23:38,514 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 23:23:38,515 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 23:23:38,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:23:38 BoogieIcfgContainer [2024-10-10 23:23:38,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 23:23:38,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 23:23:38,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 23:23:38,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 23:23:38,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:23:32" (1/3) ... [2024-10-10 23:23:38,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4767cb3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:23:38, skipping insertion in model container [2024-10-10 23:23:38,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:23:34" (2/3) ... [2024-10-10 23:23:38,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4767cb3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:23:38, skipping insertion in model container [2024-10-10 23:23:38,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:23:38" (3/3) ... [2024-10-10 23:23:38,522 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label36.c [2024-10-10 23:23:38,534 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 23:23:38,534 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 23:23:38,598 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 23:23:38,605 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;@55c1e8e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 23:23:38,605 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 23:23:38,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:38,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-10 23:23:38,620 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:23:38,621 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, 1, 1, 1, 1, 1] [2024-10-10 23:23:38,621 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:23:38,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:23:38,625 INFO L85 PathProgramCache]: Analyzing trace with hash -655684569, now seen corresponding path program 1 times [2024-10-10 23:23:38,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:23:38,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728310050] [2024-10-10 23:23:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:23:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:23:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:23:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:23:38,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:23:38,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728310050] [2024-10-10 23:23:38,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728310050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:23:38,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:23:38,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:23:38,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366808862] [2024-10-10 23:23:38,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:23:38,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 23:23:38,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:23:38,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 23:23:38,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:23:38,866 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:23:38,928 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-10 23:23:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 23:23:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-10-10 23:23:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:23:38,951 INFO L225 Difference]: With dead ends: 1511 [2024-10-10 23:23:38,952 INFO L226 Difference]: Without dead ends: 754 [2024-10-10 23:23:38,957 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 [2024-10-10 23:23:38,959 INFO L432 NwaCegarLoop]: 1438 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, 1438 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 [2024-10-10 23:23:38,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 23:23:38,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-10 23:23:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-10 23:23:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-10 23:23:39,066 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 56 [2024-10-10 23:23:39,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:23:39,067 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-10 23:23:39,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:39,067 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-10 23:23:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-10 23:23:39,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:23:39,069 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, 1, 1, 1, 1, 1] [2024-10-10 23:23:39,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 23:23:39,073 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:23:39,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:23:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash 958028186, now seen corresponding path program 1 times [2024-10-10 23:23:39,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:23:39,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767763242] [2024-10-10 23:23:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:23:39,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:23:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:23:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:23:39,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:23:39,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767763242] [2024-10-10 23:23:39,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767763242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:23:39,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:23:39,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:23:39,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161248935] [2024-10-10 23:23:39,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:23:39,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:23:39,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:23:39,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:23:39,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:23:39,254 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:23:42,096 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2024-10-10 23:23:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:23:42,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-10-10 23:23:42,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:23:42,104 INFO L225 Difference]: With dead ends: 2258 [2024-10-10 23:23:42,104 INFO L226 Difference]: Without dead ends: 1505 [2024-10-10 23:23:42,105 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 [2024-10-10 23:23:42,106 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 761 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:23:42,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 426 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-10 23:23:42,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-10-10 23:23:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2024-10-10 23:23:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6389627659574468) internal successors, (2465), 1504 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2465 transitions. [2024-10-10 23:23:42,147 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2465 transitions. Word has length 56 [2024-10-10 23:23:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:23:42,148 INFO L471 AbstractCegarLoop]: Abstraction has 1505 states and 2465 transitions. [2024-10-10 23:23:42,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:42,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2465 transitions. [2024-10-10 23:23:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-10 23:23:42,149 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:23:42,149 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:23:42,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 23:23:42,150 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:23:42,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:23:42,150 INFO L85 PathProgramCache]: Analyzing trace with hash 360389802, now seen corresponding path program 1 times [2024-10-10 23:23:42,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:23:42,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748036222] [2024-10-10 23:23:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:23:42,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:23:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:23:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:23:42,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:23:42,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748036222] [2024-10-10 23:23:42,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748036222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:23:42,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:23:42,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:23:42,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937950347] [2024-10-10 23:23:42,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:23:42,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:23:42,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:23:42,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:23:42,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:23:42,500 INFO L87 Difference]: Start difference. First operand 1505 states and 2465 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:45,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:23:45,787 INFO L93 Difference]: Finished difference Result 4550 states and 7430 transitions. [2024-10-10 23:23:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:23:45,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-10-10 23:23:45,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:23:45,798 INFO L225 Difference]: With dead ends: 4550 [2024-10-10 23:23:45,798 INFO L226 Difference]: Without dead ends: 3009 [2024-10-10 23:23:45,800 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 [2024-10-10 23:23:45,801 INFO L432 NwaCegarLoop]: 637 mSDtfsCounter, 705 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3077 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:23:45,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 651 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3077 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-10 23:23:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2024-10-10 23:23:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 3007. [2024-10-10 23:23:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.3419827012641383) internal successors, (4034), 3006 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4034 transitions. [2024-10-10 23:23:45,900 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4034 transitions. Word has length 127 [2024-10-10 23:23:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:23:45,901 INFO L471 AbstractCegarLoop]: Abstraction has 3007 states and 4034 transitions. [2024-10-10 23:23:45,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4034 transitions. [2024-10-10 23:23:45,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-10 23:23:45,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:23:45,903 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:23:45,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 23:23:45,908 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:23:45,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:23:45,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1829534551, now seen corresponding path program 1 times [2024-10-10 23:23:45,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:23:45,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095729369] [2024-10-10 23:23:45,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:23:45,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:23:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:23:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:23:46,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:23:46,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095729369] [2024-10-10 23:23:46,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095729369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:23:46,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:23:46,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:23:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787831626] [2024-10-10 23:23:46,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:23:46,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:23:46,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:23:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:23:46,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:23:46,281 INFO L87 Difference]: Start difference. First operand 3007 states and 4034 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:23:50,286 INFO L93 Difference]: Finished difference Result 9768 states and 12894 transitions. [2024-10-10 23:23:50,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:23:50,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2024-10-10 23:23:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:23:50,304 INFO L225 Difference]: With dead ends: 9768 [2024-10-10 23:23:50,304 INFO L226 Difference]: Without dead ends: 6762 [2024-10-10 23:23:50,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:23:50,309 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 2093 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4275 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 4842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:23:50,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 449 Invalid, 4842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4275 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-10-10 23:23:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2024-10-10 23:23:50,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2024-10-10 23:23:50,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.28782724449046) internal successors, (8707), 6761 states have internal predecessors, (8707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 8707 transitions. [2024-10-10 23:23:50,416 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 8707 transitions. Word has length 165 [2024-10-10 23:23:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:23:50,418 INFO L471 AbstractCegarLoop]: Abstraction has 6762 states and 8707 transitions. [2024-10-10 23:23:50,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 8707 transitions. [2024-10-10 23:23:50,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-10-10 23:23:50,428 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:23:50,428 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, 3, 3, 3, 3, 3, 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] [2024-10-10 23:23:50,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 23:23:50,429 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:23:50,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:23:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash 604205675, now seen corresponding path program 1 times [2024-10-10 23:23:50,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:23:50,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480652381] [2024-10-10 23:23:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:23:50,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:23:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:23:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-10 23:23:50,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:23:50,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480652381] [2024-10-10 23:23:50,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480652381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:23:50,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:23:50,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:23:50,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930484087] [2024-10-10 23:23:50,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:23:50,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:23:50,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:23:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:23:50,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:23:50,850 INFO L87 Difference]: Start difference. First operand 6762 states and 8707 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:23:54,173 INFO L93 Difference]: Finished difference Result 15815 states and 21399 transitions. [2024-10-10 23:23:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:23:54,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 268 [2024-10-10 23:23:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:23:54,200 INFO L225 Difference]: With dead ends: 15815 [2024-10-10 23:23:54,200 INFO L226 Difference]: Without dead ends: 9768 [2024-10-10 23:23:54,206 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 [2024-10-10 23:23:54,209 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 850 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:23:54,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 491 Invalid, 4019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3466 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-10 23:23:54,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2024-10-10 23:23:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 9766. [2024-10-10 23:23:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.273425499231951) internal successors, (12435), 9765 states have internal predecessors, (12435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12435 transitions. [2024-10-10 23:23:54,350 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12435 transitions. Word has length 268 [2024-10-10 23:23:54,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:23:54,351 INFO L471 AbstractCegarLoop]: Abstraction has 9766 states and 12435 transitions. [2024-10-10 23:23:54,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:54,352 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12435 transitions. [2024-10-10 23:23:54,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-10-10 23:23:54,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:23:54,354 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:23:54,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 23:23:54,354 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:23:54,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:23:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash -746750411, now seen corresponding path program 1 times [2024-10-10 23:23:54,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:23:54,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84808167] [2024-10-10 23:23:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:23:54,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:23:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:23:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-10 23:23:54,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:23:54,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84808167] [2024-10-10 23:23:54,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84808167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:23:54,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:23:54,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:23:54,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914088796] [2024-10-10 23:23:54,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:23:54,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:23:54,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:23:54,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:23:54,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:23:54,525 INFO L87 Difference]: Start difference. First operand 9766 states and 12435 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:23:57,119 INFO L93 Difference]: Finished difference Result 26290 states and 34161 transitions. [2024-10-10 23:23:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:23:57,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 271 [2024-10-10 23:23:57,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:23:57,161 INFO L225 Difference]: With dead ends: 26290 [2024-10-10 23:23:57,161 INFO L226 Difference]: Without dead ends: 17276 [2024-10-10 23:23:57,183 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 [2024-10-10 23:23:57,189 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:23:57,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 596 Invalid, 2816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-10 23:23:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17276 states. [2024-10-10 23:23:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17276 to 17276. [2024-10-10 23:23:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17276 states, 17275 states have (on average 1.1980318379160637) internal successors, (20696), 17275 states have internal predecessors, (20696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17276 states to 17276 states and 20696 transitions. [2024-10-10 23:23:57,636 INFO L78 Accepts]: Start accepts. Automaton has 17276 states and 20696 transitions. Word has length 271 [2024-10-10 23:23:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:23:57,640 INFO L471 AbstractCegarLoop]: Abstraction has 17276 states and 20696 transitions. [2024-10-10 23:23:57,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:23:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 17276 states and 20696 transitions. [2024-10-10 23:23:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-10-10 23:23:57,648 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:23:57,648 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:23:57,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 23:23:57,649 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:23:57,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:23:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash 67993700, now seen corresponding path program 1 times [2024-10-10 23:23:57,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:23:57,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335704201] [2024-10-10 23:23:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:23:57,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:23:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:23:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-10 23:23:57,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:23:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335704201] [2024-10-10 23:23:57,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335704201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:23:57,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:23:57,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:23:57,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54104820] [2024-10-10 23:23:57,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:23:57,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:23:57,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:23:57,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:23:57,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:23:57,894 INFO L87 Difference]: Start difference. First operand 17276 states and 20696 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) [2024-10-10 23:24:00,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:00,269 INFO L93 Difference]: Finished difference Result 33800 states and 40635 transitions. [2024-10-10 23:24:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:00,270 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 286 [2024-10-10 23:24:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:00,299 INFO L225 Difference]: With dead ends: 33800 [2024-10-10 23:24:00,299 INFO L226 Difference]: Without dead ends: 17276 [2024-10-10 23:24:00,315 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 [2024-10-10 23:24:00,315 INFO L432 NwaCegarLoop]: 974 mSDtfsCounter, 770 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:00,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 981 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-10 23:24:00,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17276 states. [2024-10-10 23:24:00,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17276 to 17276. [2024-10-10 23:24:00,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17276 states, 17275 states have (on average 1.1577424023154848) internal successors, (20000), 17275 states have internal predecessors, (20000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17276 states to 17276 states and 20000 transitions. [2024-10-10 23:24:00,494 INFO L78 Accepts]: Start accepts. Automaton has 17276 states and 20000 transitions. Word has length 286 [2024-10-10 23:24:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:00,495 INFO L471 AbstractCegarLoop]: Abstraction has 17276 states and 20000 transitions. [2024-10-10 23:24:00,496 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) [2024-10-10 23:24:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 17276 states and 20000 transitions. [2024-10-10 23:24:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-10-10 23:24:00,499 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:00,500 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:24:00,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 23:24:00,501 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:00,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 947281467, now seen corresponding path program 1 times [2024-10-10 23:24:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:00,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460294570] [2024-10-10 23:24:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-10 23:24:00,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:00,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460294570] [2024-10-10 23:24:00,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460294570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:00,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:24:00,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:24:00,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924813465] [2024-10-10 23:24:00,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:00,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:24:00,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:00,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:24:00,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:24:00,702 INFO L87 Difference]: Start difference. First operand 17276 states and 20000 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:03,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:03,095 INFO L93 Difference]: Finished difference Result 41310 states and 48606 transitions. [2024-10-10 23:24:03,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:03,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 355 [2024-10-10 23:24:03,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:03,133 INFO L225 Difference]: With dead ends: 41310 [2024-10-10 23:24:03,134 INFO L226 Difference]: Without dead ends: 24786 [2024-10-10 23:24:03,148 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 [2024-10-10 23:24:03,149 INFO L432 NwaCegarLoop]: 1194 mSDtfsCounter, 704 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:03,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1201 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-10 23:24:03,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24786 states. [2024-10-10 23:24:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24786 to 24035. [2024-10-10 23:24:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24035 states, 24034 states have (on average 1.1449613048181742) internal successors, (27518), 24034 states have internal predecessors, (27518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24035 states to 24035 states and 27518 transitions. [2024-10-10 23:24:03,387 INFO L78 Accepts]: Start accepts. Automaton has 24035 states and 27518 transitions. Word has length 355 [2024-10-10 23:24:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:03,387 INFO L471 AbstractCegarLoop]: Abstraction has 24035 states and 27518 transitions. [2024-10-10 23:24:03,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 24035 states and 27518 transitions. [2024-10-10 23:24:03,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-10-10 23:24:03,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:03,395 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:24:03,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-10 23:24:03,395 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:03,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:03,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1841932639, now seen corresponding path program 1 times [2024-10-10 23:24:03,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:03,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230399761] [2024-10-10 23:24:03,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:03,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 23:24:03,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:03,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230399761] [2024-10-10 23:24:03,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230399761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:03,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:24:03,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:24:03,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821988070] [2024-10-10 23:24:03,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:03,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:24:03,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:03,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:24:03,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:24:03,602 INFO L87 Difference]: Start difference. First operand 24035 states and 27518 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:06,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:06,539 INFO L93 Difference]: Finished difference Result 60085 states and 68723 transitions. [2024-10-10 23:24:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:06,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 383 [2024-10-10 23:24:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:06,594 INFO L225 Difference]: With dead ends: 60085 [2024-10-10 23:24:06,594 INFO L226 Difference]: Without dead ends: 36802 [2024-10-10 23:24:06,615 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 [2024-10-10 23:24:06,616 INFO L432 NwaCegarLoop]: 1229 mSDtfsCounter, 637 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:06,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1236 Invalid, 2949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-10 23:24:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36802 states. [2024-10-10 23:24:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36802 to 35300. [2024-10-10 23:24:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35300 states, 35299 states have (on average 1.1341964361596646) internal successors, (40036), 35299 states have internal predecessors, (40036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35300 states to 35300 states and 40036 transitions. [2024-10-10 23:24:07,007 INFO L78 Accepts]: Start accepts. Automaton has 35300 states and 40036 transitions. Word has length 383 [2024-10-10 23:24:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:07,008 INFO L471 AbstractCegarLoop]: Abstraction has 35300 states and 40036 transitions. [2024-10-10 23:24:07,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand 35300 states and 40036 transitions. [2024-10-10 23:24:07,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-10-10 23:24:07,013 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:07,013 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:24:07,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 23:24:07,014 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:07,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1038026608, now seen corresponding path program 1 times [2024-10-10 23:24:07,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:07,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295996641] [2024-10-10 23:24:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:07,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-10 23:24:07,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295996641] [2024-10-10 23:24:07,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295996641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:07,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:24:07,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:24:07,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078848082] [2024-10-10 23:24:07,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:07,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:24:07,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:07,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:24:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:24:07,203 INFO L87 Difference]: Start difference. First operand 35300 states and 40036 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:09,435 INFO L93 Difference]: Finished difference Result 78109 states and 88521 transitions. [2024-10-10 23:24:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:09,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 384 [2024-10-10 23:24:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:09,638 INFO L225 Difference]: With dead ends: 78109 [2024-10-10 23:24:09,638 INFO L226 Difference]: Without dead ends: 39806 [2024-10-10 23:24:09,647 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 [2024-10-10 23:24:09,648 INFO L432 NwaCegarLoop]: 1335 mSDtfsCounter, 717 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:09,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1342 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-10 23:24:09,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39806 states. [2024-10-10 23:24:09,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39806 to 39055. [2024-10-10 23:24:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39055 states, 39054 states have (on average 1.1208582987658113) internal successors, (43774), 39054 states have internal predecessors, (43774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39055 states to 39055 states and 43774 transitions. [2024-10-10 23:24:09,959 INFO L78 Accepts]: Start accepts. Automaton has 39055 states and 43774 transitions. Word has length 384 [2024-10-10 23:24:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:09,960 INFO L471 AbstractCegarLoop]: Abstraction has 39055 states and 43774 transitions. [2024-10-10 23:24:09,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 39055 states and 43774 transitions. [2024-10-10 23:24:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-10-10 23:24:09,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:09,969 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, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:24:09,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 23:24:09,969 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:09,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:09,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1891873048, now seen corresponding path program 1 times [2024-10-10 23:24:09,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:09,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165722547] [2024-10-10 23:24:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:09,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-10-10 23:24:10,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:10,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165722547] [2024-10-10 23:24:10,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165722547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:10,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:24:10,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:24:10,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196072494] [2024-10-10 23:24:10,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:10,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:24:10,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:10,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:24:10,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:24:10,204 INFO L87 Difference]: Start difference. First operand 39055 states and 43774 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:12,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:12,890 INFO L93 Difference]: Finished difference Result 93880 states and 106520 transitions. [2024-10-10 23:24:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:12,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 455 [2024-10-10 23:24:12,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:12,947 INFO L225 Difference]: With dead ends: 93880 [2024-10-10 23:24:12,947 INFO L226 Difference]: Without dead ends: 52573 [2024-10-10 23:24:12,975 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 [2024-10-10 23:24:12,975 INFO L432 NwaCegarLoop]: 1282 mSDtfsCounter, 714 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:12,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1289 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-10 23:24:13,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52573 states. [2024-10-10 23:24:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52573 to 46565. [2024-10-10 23:24:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46565 states, 46564 states have (on average 1.1123185293359676) internal successors, (51794), 46564 states have internal predecessors, (51794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46565 states to 46565 states and 51794 transitions. [2024-10-10 23:24:13,642 INFO L78 Accepts]: Start accepts. Automaton has 46565 states and 51794 transitions. Word has length 455 [2024-10-10 23:24:13,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:13,643 INFO L471 AbstractCegarLoop]: Abstraction has 46565 states and 51794 transitions. [2024-10-10 23:24:13,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:13,643 INFO L276 IsEmpty]: Start isEmpty. Operand 46565 states and 51794 transitions. [2024-10-10 23:24:13,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-10-10 23:24:13,651 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:13,651 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:24:13,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-10 23:24:13,651 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:13,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:13,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1454680039, now seen corresponding path program 1 times [2024-10-10 23:24:13,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:13,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710652765] [2024-10-10 23:24:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:13,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-10 23:24:14,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:14,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710652765] [2024-10-10 23:24:14,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710652765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:14,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:24:14,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:24:14,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034844407] [2024-10-10 23:24:14,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:14,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:24:14,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:24:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:24:14,024 INFO L87 Difference]: Start difference. First operand 46565 states and 51794 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:16,654 INFO L93 Difference]: Finished difference Result 98386 states and 109242 transitions. [2024-10-10 23:24:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:16,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 470 [2024-10-10 23:24:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:16,716 INFO L225 Difference]: With dead ends: 98386 [2024-10-10 23:24:16,716 INFO L226 Difference]: Without dead ends: 52573 [2024-10-10 23:24:16,740 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 [2024-10-10 23:24:16,740 INFO L432 NwaCegarLoop]: 1110 mSDtfsCounter, 727 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:16,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1117 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-10 23:24:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52573 states. [2024-10-10 23:24:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52573 to 51071. [2024-10-10 23:24:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51071 states, 51070 states have (on average 1.0962208733111416) internal successors, (55984), 51070 states have internal predecessors, (55984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51071 states to 51071 states and 55984 transitions. [2024-10-10 23:24:17,435 INFO L78 Accepts]: Start accepts. Automaton has 51071 states and 55984 transitions. Word has length 470 [2024-10-10 23:24:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:17,435 INFO L471 AbstractCegarLoop]: Abstraction has 51071 states and 55984 transitions. [2024-10-10 23:24:17,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 51071 states and 55984 transitions. [2024-10-10 23:24:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2024-10-10 23:24:17,455 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:17,455 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:24:17,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-10 23:24:17,455 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:17,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash 468574232, now seen corresponding path program 1 times [2024-10-10 23:24:17,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:17,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979110780] [2024-10-10 23:24:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:17,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-10 23:24:17,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:17,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979110780] [2024-10-10 23:24:17,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979110780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:17,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:24:17,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:24:17,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939717994] [2024-10-10 23:24:17,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:17,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:24:17,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:17,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:24:17,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:24:17,946 INFO L87 Difference]: Start difference. First operand 51071 states and 55984 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:21,080 INFO L93 Difference]: Finished difference Result 127675 states and 141191 transitions. [2024-10-10 23:24:21,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:21,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 564 [2024-10-10 23:24:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:21,154 INFO L225 Difference]: With dead ends: 127675 [2024-10-10 23:24:21,154 INFO L226 Difference]: Without dead ends: 77356 [2024-10-10 23:24:21,178 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 [2024-10-10 23:24:21,179 INFO L432 NwaCegarLoop]: 1322 mSDtfsCounter, 719 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:21,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1329 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-10 23:24:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77356 states. [2024-10-10 23:24:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77356 to 72850. [2024-10-10 23:24:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72850 states, 72849 states have (on average 1.0854095457727628) internal successors, (79071), 72849 states have internal predecessors, (79071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72850 states to 72850 states and 79071 transitions. [2024-10-10 23:24:22,033 INFO L78 Accepts]: Start accepts. Automaton has 72850 states and 79071 transitions. Word has length 564 [2024-10-10 23:24:22,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:22,034 INFO L471 AbstractCegarLoop]: Abstraction has 72850 states and 79071 transitions. [2024-10-10 23:24:22,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:22,034 INFO L276 IsEmpty]: Start isEmpty. Operand 72850 states and 79071 transitions. [2024-10-10 23:24:22,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2024-10-10 23:24:22,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:22,197 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:24:22,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-10 23:24:22,197 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:22,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:22,197 INFO L85 PathProgramCache]: Analyzing trace with hash 12228477, now seen corresponding path program 1 times [2024-10-10 23:24:22,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:22,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088719993] [2024-10-10 23:24:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:22,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 862 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-10-10 23:24:22,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:22,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088719993] [2024-10-10 23:24:22,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088719993] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:22,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:24:22,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:24:22,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477707140] [2024-10-10 23:24:22,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:22,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:24:22,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:24:22,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:24:22,516 INFO L87 Difference]: Start difference. First operand 72850 states and 79071 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:25,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:25,261 INFO L93 Difference]: Finished difference Result 148703 states and 161282 transitions. [2024-10-10 23:24:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:25,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 630 [2024-10-10 23:24:25,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:25,351 INFO L225 Difference]: With dead ends: 148703 [2024-10-10 23:24:25,351 INFO L226 Difference]: Without dead ends: 76605 [2024-10-10 23:24:25,388 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 [2024-10-10 23:24:25,388 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 734 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:25,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 283 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-10 23:24:25,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76605 states. [2024-10-10 23:24:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76605 to 72099. [2024-10-10 23:24:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72099 states, 72098 states have (on average 1.0819301506283114) internal successors, (78005), 72098 states have internal predecessors, (78005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72099 states to 72099 states and 78005 transitions. [2024-10-10 23:24:26,214 INFO L78 Accepts]: Start accepts. Automaton has 72099 states and 78005 transitions. Word has length 630 [2024-10-10 23:24:26,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:26,214 INFO L471 AbstractCegarLoop]: Abstraction has 72099 states and 78005 transitions. [2024-10-10 23:24:26,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand 72099 states and 78005 transitions. [2024-10-10 23:24:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2024-10-10 23:24:26,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:26,232 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:24:26,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-10 23:24:26,233 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:26,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:26,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1668445285, now seen corresponding path program 1 times [2024-10-10 23:24:26,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:26,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135035412] [2024-10-10 23:24:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:26,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 880 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-10-10 23:24:26,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:26,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135035412] [2024-10-10 23:24:26,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135035412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:26,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:24:26,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:24:26,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877370352] [2024-10-10 23:24:26,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:26,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:24:26,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:26,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:24:26,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:24:26,587 INFO L87 Difference]: Start difference. First operand 72099 states and 78005 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:29,824 INFO L93 Difference]: Finished difference Result 184000 states and 200161 transitions. [2024-10-10 23:24:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:29,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 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 641 [2024-10-10 23:24:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:29,954 INFO L225 Difference]: With dead ends: 184000 [2024-10-10 23:24:29,954 INFO L226 Difference]: Without dead ends: 112653 [2024-10-10 23:24:29,974 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 [2024-10-10 23:24:29,975 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 709 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:29,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 440 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-10 23:24:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112653 states. [2024-10-10 23:24:31,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112653 to 108898. [2024-10-10 23:24:31,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108898 states, 108897 states have (on average 1.078835964259805) internal successors, (117482), 108897 states have internal predecessors, (117482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:31,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108898 states to 108898 states and 117482 transitions. [2024-10-10 23:24:31,188 INFO L78 Accepts]: Start accepts. Automaton has 108898 states and 117482 transitions. Word has length 641 [2024-10-10 23:24:31,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:31,188 INFO L471 AbstractCegarLoop]: Abstraction has 108898 states and 117482 transitions. [2024-10-10 23:24:31,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 108898 states and 117482 transitions. [2024-10-10 23:24:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2024-10-10 23:24:31,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:31,205 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2024-10-10 23:24:31,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-10 23:24:31,205 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:31,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:31,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1897937690, now seen corresponding path program 1 times [2024-10-10 23:24:31,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:31,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868519951] [2024-10-10 23:24:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 431 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:24:33,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:33,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868519951] [2024-10-10 23:24:33,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868519951] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:24:33,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917551015] [2024-10-10 23:24:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:33,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:24:33,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:24:33,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:24:33,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 23:24:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:33,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:24:33,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:24:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-10-10 23:24:34,293 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:24:34,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917551015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:34,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:24:34,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-10 23:24:34,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203783003] [2024-10-10 23:24:34,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:34,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:24:34,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:34,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:24:34,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:24:34,296 INFO L87 Difference]: Start difference. First operand 108898 states and 117482 transitions. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:38,812 INFO L93 Difference]: Finished difference Result 333451 states and 361095 transitions. [2024-10-10 23:24:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:24:38,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 652 [2024-10-10 23:24:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:39,165 INFO L225 Difference]: With dead ends: 333451 [2024-10-10 23:24:39,165 INFO L226 Difference]: Without dead ends: 225305 [2024-10-10 23:24:39,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:24:39,203 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1593 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4681 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 4681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:39,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 27 Invalid, 5329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 4681 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-10-10 23:24:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225305 states. [2024-10-10 23:24:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225305 to 205026. [2024-10-10 23:24:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205026 states, 205025 states have (on average 1.081741251066943) internal successors, (221784), 205025 states have internal predecessors, (221784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:42,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205026 states to 205026 states and 221784 transitions. [2024-10-10 23:24:42,333 INFO L78 Accepts]: Start accepts. Automaton has 205026 states and 221784 transitions. Word has length 652 [2024-10-10 23:24:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:42,334 INFO L471 AbstractCegarLoop]: Abstraction has 205026 states and 221784 transitions. [2024-10-10 23:24:42,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 205026 states and 221784 transitions. [2024-10-10 23:24:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2024-10-10 23:24:42,351 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:42,352 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:24:42,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 23:24:42,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 23:24:42,553 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:42,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1486164520, now seen corresponding path program 1 times [2024-10-10 23:24:42,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:42,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456131006] [2024-10-10 23:24:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:42,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 697 proven. 333 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-10 23:24:43,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:43,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456131006] [2024-10-10 23:24:43,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456131006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:24:43,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990725881] [2024-10-10 23:24:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:43,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:24:43,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:24:43,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:24:43,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 23:24:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:43,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:24:43,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:24:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2024-10-10 23:24:43,912 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:24:43,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990725881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:43,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:24:43,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:24:43,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802055838] [2024-10-10 23:24:43,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:43,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:24:43,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:43,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:24:43,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:24:43,915 INFO L87 Difference]: Start difference. First operand 205026 states and 221784 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:47,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:47,683 INFO L93 Difference]: Finished difference Result 397284 states and 430948 transitions. [2024-10-10 23:24:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:47,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 668 [2024-10-10 23:24:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:48,073 INFO L225 Difference]: With dead ends: 397284 [2024-10-10 23:24:48,073 INFO L226 Difference]: Without dead ends: 223801 [2024-10-10 23:24:48,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:24:48,126 INFO L432 NwaCegarLoop]: 1107 mSDtfsCounter, 697 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:48,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1114 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-10 23:24:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223801 states. [2024-10-10 23:24:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223801 to 190006. [2024-10-10 23:24:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190006 states, 190005 states have (on average 1.0817978474250678) internal successors, (205547), 190005 states have internal predecessors, (205547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190006 states to 190006 states and 205547 transitions. [2024-10-10 23:24:50,760 INFO L78 Accepts]: Start accepts. Automaton has 190006 states and 205547 transitions. Word has length 668 [2024-10-10 23:24:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:50,760 INFO L471 AbstractCegarLoop]: Abstraction has 190006 states and 205547 transitions. [2024-10-10 23:24:50,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:50,761 INFO L276 IsEmpty]: Start isEmpty. Operand 190006 states and 205547 transitions. [2024-10-10 23:24:50,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2024-10-10 23:24:50,794 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:50,794 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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:24:50,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 23:24:50,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-10 23:24:50,995 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:50,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:50,996 INFO L85 PathProgramCache]: Analyzing trace with hash -926679196, now seen corresponding path program 1 times [2024-10-10 23:24:50,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:50,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406035701] [2024-10-10 23:24:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:50,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:24:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 718 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-10-10 23:24:52,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:24:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406035701] [2024-10-10 23:24:52,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406035701] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:24:52,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:24:52,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:24:52,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708350436] [2024-10-10 23:24:52,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:24:52,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:24:52,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:24:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:24:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:24:52,324 INFO L87 Difference]: Start difference. First operand 190006 states and 205547 transitions. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:24:55,962 INFO L93 Difference]: Finished difference Result 431079 states and 468901 transitions. [2024-10-10 23:24:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:24:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 829 [2024-10-10 23:24:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:24:56,296 INFO L225 Difference]: With dead ends: 431079 [2024-10-10 23:24:56,297 INFO L226 Difference]: Without dead ends: 241825 [2024-10-10 23:24:56,429 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 [2024-10-10 23:24:56,429 INFO L432 NwaCegarLoop]: 1247 mSDtfsCounter, 668 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:24:56,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1254 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-10 23:24:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241825 states. [2024-10-10 23:24:59,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241825 to 235817. [2024-10-10 23:24:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235817 states, 235816 states have (on average 1.073137530956339) internal successors, (253063), 235816 states have internal predecessors, (253063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235817 states to 235817 states and 253063 transitions. [2024-10-10 23:24:59,733 INFO L78 Accepts]: Start accepts. Automaton has 235817 states and 253063 transitions. Word has length 829 [2024-10-10 23:24:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:24:59,733 INFO L471 AbstractCegarLoop]: Abstraction has 235817 states and 253063 transitions. [2024-10-10 23:24:59,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:24:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 235817 states and 253063 transitions. [2024-10-10 23:24:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2024-10-10 23:24:59,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:24:59,784 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:24:59,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-10 23:24:59,784 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:24:59,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:24:59,786 INFO L85 PathProgramCache]: Analyzing trace with hash -207649596, now seen corresponding path program 1 times [2024-10-10 23:24:59,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:24:59,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871192902] [2024-10-10 23:24:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:24:59,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:24:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat