./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label49.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label49.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2ce90b08f9dc9315f13f0d8408b309f0856f833532caca0391f68d5a9cb9786 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:10:20,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:10:20,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:10:20,753 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:10:20,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:10:20,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:10:20,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:10:20,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:10:20,778 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:10:20,779 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:10:20,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:10:20,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:10:20,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:10:20,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:10:20,781 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:10:20,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:10:20,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:10:20,782 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:10:20,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:10:20,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:10:20,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:10:20,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:10:20,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:10:20,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:10:20,784 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:10:20,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:10:20,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:10:20,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:10:20,786 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:10:20,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:10:20,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:10:20,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:10:20,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:10:20,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:10:20,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:10:20,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:10:20,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:10:20,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:10:20,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:10:20,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:10:20,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:10:20,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:10:20,790 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2ce90b08f9dc9315f13f0d8408b309f0856f833532caca0391f68d5a9cb9786 [2024-11-16 03:10:21,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:10:21,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:10:21,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:10:21,051 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:10:21,051 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:10:21,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label49.c [2024-11-16 03:10:22,559 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:10:22,890 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:10:22,891 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label49.c [2024-11-16 03:10:22,916 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4540842/62c8e1cf202943ab858ff39f80f4eb4e/FLAGde8f44414 [2024-11-16 03:10:22,934 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4540842/62c8e1cf202943ab858ff39f80f4eb4e [2024-11-16 03:10:22,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:10:22,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:10:22,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:10:22,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:10:22,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:10:22,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:10:22" (1/1) ... [2024-11-16 03:10:22,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb61e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:22, skipping insertion in model container [2024-11-16 03:10:22,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:10:22" (1/1) ... [2024-11-16 03:10:23,013 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:10:23,562 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label49.c[56899,56912] [2024-11-16 03:10:23,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:10:23,628 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:10:23,844 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label49.c[56899,56912] [2024-11-16 03:10:23,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:10:23,882 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:10:23,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23 WrapperNode [2024-11-16 03:10:23,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:10:23,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:10:23,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:10:23,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:10:23,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:23,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,007 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-16 03:10:24,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:10:24,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:10:24,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:10:24,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:10:24,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,073 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 03:10:24,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,132 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:10:24,171 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:10:24,171 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:10:24,171 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:10:24,173 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (1/1) ... [2024-11-16 03:10:24,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:10:24,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:10:24,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 03:10:24,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 03:10:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:10:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:10:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:10:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:10:24,347 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:10:24,349 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:10:26,098 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-16 03:10:26,099 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:10:26,121 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:10:26,121 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:10:26,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:10:26 BoogieIcfgContainer [2024-11-16 03:10:26,122 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:10:26,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:10:26,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:10:26,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:10:26,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:10:22" (1/3) ... [2024-11-16 03:10:26,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f43b47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:10:26, skipping insertion in model container [2024-11-16 03:10:26,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:10:23" (2/3) ... [2024-11-16 03:10:26,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f43b47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:10:26, skipping insertion in model container [2024-11-16 03:10:26,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:10:26" (3/3) ... [2024-11-16 03:10:26,133 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label49.c [2024-11-16 03:10:26,150 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:10:26,150 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:10:26,231 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:10:26,238 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;@5fb9412d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:10:26,240 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:10:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-16 03:10:26,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:26,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:26,265 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:26,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:26,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1893902994, now seen corresponding path program 1 times [2024-11-16 03:10:26,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:26,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700805886] [2024-11-16 03:10:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:26,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700805886] [2024-11-16 03:10:27,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700805886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:27,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:27,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:27,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947983215] [2024-11-16 03:10:27,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:27,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:27,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:27,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:27,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:27,278 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:28,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:28,425 INFO L93 Difference]: Finished difference Result 866 states and 1513 transitions. [2024-11-16 03:10:28,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:28,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-16 03:10:28,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:28,439 INFO L225 Difference]: With dead ends: 866 [2024-11-16 03:10:28,439 INFO L226 Difference]: Without dead ends: 468 [2024-11-16 03:10:28,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:28,447 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 136 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:28,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 174 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 03:10:28,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-16 03:10:28,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 462. [2024-11-16 03:10:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.5531453362255965) internal successors, (716), 461 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 716 transitions. [2024-11-16 03:10:28,521 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 716 transitions. Word has length 170 [2024-11-16 03:10:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:28,522 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 716 transitions. [2024-11-16 03:10:28,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 716 transitions. [2024-11-16 03:10:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 03:10:28,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:28,527 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 03:10:28,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:10:28,528 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:28,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:28,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1208316440, now seen corresponding path program 1 times [2024-11-16 03:10:28,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:28,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766555745] [2024-11-16 03:10:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:28,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:28,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:28,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766555745] [2024-11-16 03:10:28,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766555745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:28,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:28,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263347157] [2024-11-16 03:10:28,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:28,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:28,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:28,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:28,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:28,816 INFO L87 Difference]: Start difference. First operand 462 states and 716 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:29,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:29,569 INFO L93 Difference]: Finished difference Result 1351 states and 2110 transitions. [2024-11-16 03:10:29,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:29,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2024-11-16 03:10:29,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:29,575 INFO L225 Difference]: With dead ends: 1351 [2024-11-16 03:10:29,576 INFO L226 Difference]: Without dead ends: 891 [2024-11-16 03:10:29,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:29,579 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 247 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:29,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 96 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:10:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-16 03:10:29,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 873. [2024-11-16 03:10:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5298165137614679) internal successors, (1334), 872 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1334 transitions. [2024-11-16 03:10:29,627 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1334 transitions. Word has length 179 [2024-11-16 03:10:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:29,627 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1334 transitions. [2024-11-16 03:10:29,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1334 transitions. [2024-11-16 03:10:29,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-16 03:10:29,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:29,632 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:29,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:10:29,633 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:29,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1056342538, now seen corresponding path program 1 times [2024-11-16 03:10:29,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:29,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187663476] [2024-11-16 03:10:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:29,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:29,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:29,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187663476] [2024-11-16 03:10:29,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187663476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:29,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:29,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:29,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890059670] [2024-11-16 03:10:29,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:29,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:29,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:29,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:29,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:29,857 INFO L87 Difference]: Start difference. First operand 873 states and 1334 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:30,249 INFO L93 Difference]: Finished difference Result 1720 states and 2632 transitions. [2024-11-16 03:10:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:30,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2024-11-16 03:10:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:30,253 INFO L225 Difference]: With dead ends: 1720 [2024-11-16 03:10:30,253 INFO L226 Difference]: Without dead ends: 849 [2024-11-16 03:10:30,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:30,256 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 330 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:30,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 33 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:10:30,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-16 03:10:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2024-11-16 03:10:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 1.474056603773585) internal successors, (1250), 848 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1250 transitions. [2024-11-16 03:10:30,272 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1250 transitions. Word has length 184 [2024-11-16 03:10:30,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:30,273 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1250 transitions. [2024-11-16 03:10:30,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:30,273 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1250 transitions. [2024-11-16 03:10:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-16 03:10:30,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:30,276 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-16 03:10:30,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:10:30,277 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:30,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1582073672, now seen corresponding path program 1 times [2024-11-16 03:10:30,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:30,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511596828] [2024-11-16 03:10:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:30,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:10:30,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:30,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511596828] [2024-11-16 03:10:30,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511596828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:30,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:30,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:30,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115244026] [2024-11-16 03:10:30,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:30,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:30,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:30,577 INFO L87 Difference]: Start difference. First operand 849 states and 1250 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:31,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:31,301 INFO L93 Difference]: Finished difference Result 2512 states and 3704 transitions. [2024-11-16 03:10:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:31,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2024-11-16 03:10:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:31,308 INFO L225 Difference]: With dead ends: 2512 [2024-11-16 03:10:31,308 INFO L226 Difference]: Without dead ends: 1665 [2024-11-16 03:10:31,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:31,313 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 210 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:31,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 145 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:10:31,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2024-11-16 03:10:31,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1665. [2024-11-16 03:10:31,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 1.3052884615384615) internal successors, (2172), 1664 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2172 transitions. [2024-11-16 03:10:31,347 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2172 transitions. Word has length 186 [2024-11-16 03:10:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:31,347 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2172 transitions. [2024-11-16 03:10:31,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2172 transitions. [2024-11-16 03:10:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-16 03:10:31,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:31,352 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-16 03:10:31,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:10:31,352 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:31,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash 318153313, now seen corresponding path program 1 times [2024-11-16 03:10:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:31,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020221277] [2024-11-16 03:10:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:31,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 03:10:31,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:31,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020221277] [2024-11-16 03:10:31,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020221277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:31,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:31,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:31,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925560018] [2024-11-16 03:10:31,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:31,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:31,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:31,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:31,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:31,743 INFO L87 Difference]: Start difference. First operand 1665 states and 2172 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:32,594 INFO L93 Difference]: Finished difference Result 4989 states and 6510 transitions. [2024-11-16 03:10:32,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:32,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 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 191 [2024-11-16 03:10:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:32,607 INFO L225 Difference]: With dead ends: 4989 [2024-11-16 03:10:32,608 INFO L226 Difference]: Without dead ends: 3326 [2024-11-16 03:10:32,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:32,614 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 287 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:32,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 55 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:10:32,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2024-11-16 03:10:32,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3322. [2024-11-16 03:10:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3321 states have (on average 1.2999096657633242) internal successors, (4317), 3321 states have internal predecessors, (4317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 4317 transitions. [2024-11-16 03:10:32,683 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 4317 transitions. Word has length 191 [2024-11-16 03:10:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:32,683 INFO L471 AbstractCegarLoop]: Abstraction has 3322 states and 4317 transitions. [2024-11-16 03:10:32,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 4317 transitions. [2024-11-16 03:10:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-16 03:10:32,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:32,689 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:32,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:10:32,689 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:32,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:32,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1510562595, now seen corresponding path program 1 times [2024-11-16 03:10:32,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:32,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470673230] [2024-11-16 03:10:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:32,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:10:33,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:33,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470673230] [2024-11-16 03:10:33,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470673230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:10:33,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089443185] [2024-11-16 03:10:33,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:33,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:10:33,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:10:33,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:10:33,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:10:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:33,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:10:33,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:10:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:10:33,323 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:10:33,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089443185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:33,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:10:33,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-16 03:10:33,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557705106] [2024-11-16 03:10:33,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:33,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:33,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:33,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:33,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:10:33,325 INFO L87 Difference]: Start difference. First operand 3322 states and 4317 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:33,611 INFO L93 Difference]: Finished difference Result 9954 states and 12939 transitions. [2024-11-16 03:10:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:33,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 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 193 [2024-11-16 03:10:33,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:33,638 INFO L225 Difference]: With dead ends: 9954 [2024-11-16 03:10:33,638 INFO L226 Difference]: Without dead ends: 6634 [2024-11-16 03:10:33,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:10:33,646 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 322 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:33,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 539 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 03:10:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2024-11-16 03:10:33,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6625. [2024-11-16 03:10:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6625 states, 6624 states have (on average 1.2995169082125604) internal successors, (8608), 6624 states have internal predecessors, (8608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6625 states to 6625 states and 8608 transitions. [2024-11-16 03:10:33,792 INFO L78 Accepts]: Start accepts. Automaton has 6625 states and 8608 transitions. Word has length 193 [2024-11-16 03:10:33,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:33,792 INFO L471 AbstractCegarLoop]: Abstraction has 6625 states and 8608 transitions. [2024-11-16 03:10:33,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 6625 states and 8608 transitions. [2024-11-16 03:10:33,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-16 03:10:33,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:33,801 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:33,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 03:10:34,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 03:10:34,002 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:34,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:34,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1753488504, now seen corresponding path program 1 times [2024-11-16 03:10:34,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:34,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270460454] [2024-11-16 03:10:34,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:34,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:34,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:34,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270460454] [2024-11-16 03:10:34,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270460454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:10:34,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583252044] [2024-11-16 03:10:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:34,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:10:34,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:10:34,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:10:34,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 03:10:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:34,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:10:34,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:10:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:10:34,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:10:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583252044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:34,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:10:34,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 03:10:34,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753074321] [2024-11-16 03:10:34,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:34,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:34,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:34,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:34,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:10:34,477 INFO L87 Difference]: Start difference. First operand 6625 states and 8608 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:35,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:35,362 INFO L93 Difference]: Finished difference Result 16520 states and 22026 transitions. [2024-11-16 03:10:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:35,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 195 [2024-11-16 03:10:35,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:35,396 INFO L225 Difference]: With dead ends: 16520 [2024-11-16 03:10:35,397 INFO L226 Difference]: Without dead ends: 9897 [2024-11-16 03:10:35,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:10:35,409 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 210 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:35,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 372 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:10:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9897 states. [2024-11-16 03:10:35,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9897 to 9889. [2024-11-16 03:10:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9889 states, 9888 states have (on average 1.2342233009708738) internal successors, (12204), 9888 states have internal predecessors, (12204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:35,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 12204 transitions. [2024-11-16 03:10:35,638 INFO L78 Accepts]: Start accepts. Automaton has 9889 states and 12204 transitions. Word has length 195 [2024-11-16 03:10:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:35,638 INFO L471 AbstractCegarLoop]: Abstraction has 9889 states and 12204 transitions. [2024-11-16 03:10:35,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 9889 states and 12204 transitions. [2024-11-16 03:10:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-16 03:10:35,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:35,648 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:35,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 03:10:35,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-16 03:10:35,849 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:35,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:35,850 INFO L85 PathProgramCache]: Analyzing trace with hash 534309438, now seen corresponding path program 1 times [2024-11-16 03:10:35,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:35,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303878425] [2024-11-16 03:10:35,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:35,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:10:36,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:36,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303878425] [2024-11-16 03:10:36,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303878425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:36,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:36,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:10:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567195737] [2024-11-16 03:10:36,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:36,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:10:36,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:36,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:10:36,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:10:36,213 INFO L87 Difference]: Start difference. First operand 9889 states and 12204 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:37,074 INFO L93 Difference]: Finished difference Result 19798 states and 24448 transitions. [2024-11-16 03:10:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:10:37,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 229 [2024-11-16 03:10:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:37,116 INFO L225 Difference]: With dead ends: 19798 [2024-11-16 03:10:37,116 INFO L226 Difference]: Without dead ends: 9911 [2024-11-16 03:10:37,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:10:37,133 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 797 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:37,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 48 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:10:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9911 states. [2024-11-16 03:10:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9911 to 9889. [2024-11-16 03:10:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9889 states, 9888 states have (on average 1.2245145631067962) internal successors, (12108), 9888 states have internal predecessors, (12108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 12108 transitions. [2024-11-16 03:10:37,409 INFO L78 Accepts]: Start accepts. Automaton has 9889 states and 12108 transitions. Word has length 229 [2024-11-16 03:10:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:37,410 INFO L471 AbstractCegarLoop]: Abstraction has 9889 states and 12108 transitions. [2024-11-16 03:10:37,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 9889 states and 12108 transitions. [2024-11-16 03:10:37,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-16 03:10:37,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:37,423 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:37,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 03:10:37,424 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:37,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:37,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1130551774, now seen corresponding path program 1 times [2024-11-16 03:10:37,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:37,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741921843] [2024-11-16 03:10:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:37,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:37,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:37,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741921843] [2024-11-16 03:10:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741921843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:37,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:37,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:10:37,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727345665] [2024-11-16 03:10:37,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:37,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:10:37,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:37,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:10:37,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:10:37,720 INFO L87 Difference]: Start difference. First operand 9889 states and 12108 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:38,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:38,771 INFO L93 Difference]: Finished difference Result 34557 states and 42486 transitions. [2024-11-16 03:10:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:10:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2024-11-16 03:10:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:38,818 INFO L225 Difference]: With dead ends: 34557 [2024-11-16 03:10:38,818 INFO L226 Difference]: Without dead ends: 24670 [2024-11-16 03:10:38,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:10:38,838 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 459 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:38,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 482 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 03:10:38,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24670 states. [2024-11-16 03:10:39,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24670 to 24655. [2024-11-16 03:10:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24655 states, 24654 states have (on average 1.2107568751521052) internal successors, (29850), 24654 states have internal predecessors, (29850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24655 states to 24655 states and 29850 transitions. [2024-11-16 03:10:39,374 INFO L78 Accepts]: Start accepts. Automaton has 24655 states and 29850 transitions. Word has length 242 [2024-11-16 03:10:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:39,375 INFO L471 AbstractCegarLoop]: Abstraction has 24655 states and 29850 transitions. [2024-11-16 03:10:39,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 24655 states and 29850 transitions. [2024-11-16 03:10:39,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-16 03:10:39,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:39,394 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:39,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 03:10:39,398 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:39,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash -349705261, now seen corresponding path program 1 times [2024-11-16 03:10:39,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:39,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170825759] [2024-11-16 03:10:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:39,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 03:10:40,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:40,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170825759] [2024-11-16 03:10:40,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170825759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:10:40,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924016986] [2024-11-16 03:10:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:40,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:10:40,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:10:40,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:10:40,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 03:10:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:41,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:10:41,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:10:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 03:10:41,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:10:41,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924016986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:41,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:10:41,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:10:41,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690283989] [2024-11-16 03:10:41,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:41,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:41,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:41,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:41,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:10:41,354 INFO L87 Difference]: Start difference. First operand 24655 states and 29850 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:42,077 INFO L93 Difference]: Finished difference Result 69802 states and 84615 transitions. [2024-11-16 03:10:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:42,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2024-11-16 03:10:42,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:42,162 INFO L225 Difference]: With dead ends: 69802 [2024-11-16 03:10:42,163 INFO L226 Difference]: Without dead ends: 45149 [2024-11-16 03:10:42,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:10:42,200 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 63 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:42,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 147 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:10:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45149 states. [2024-11-16 03:10:42,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45149 to 41011. [2024-11-16 03:10:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41011 states, 41010 states have (on average 1.2177761521580102) internal successors, (49941), 41010 states have internal predecessors, (49941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:42,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41011 states to 41011 states and 49941 transitions. [2024-11-16 03:10:42,892 INFO L78 Accepts]: Start accepts. Automaton has 41011 states and 49941 transitions. Word has length 252 [2024-11-16 03:10:42,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:42,893 INFO L471 AbstractCegarLoop]: Abstraction has 41011 states and 49941 transitions. [2024-11-16 03:10:42,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 41011 states and 49941 transitions. [2024-11-16 03:10:42,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-16 03:10:42,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:42,908 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:42,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 03:10:43,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:10:43,110 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:43,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1795240849, now seen corresponding path program 1 times [2024-11-16 03:10:43,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:43,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988984239] [2024-11-16 03:10:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:43,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:10:43,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:43,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988984239] [2024-11-16 03:10:43,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988984239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:43,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:43,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:10:43,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827872798] [2024-11-16 03:10:43,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:43,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:43,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:43,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:43,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:43,314 INFO L87 Difference]: Start difference. First operand 41011 states and 49941 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:44,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:44,208 INFO L93 Difference]: Finished difference Result 113864 states and 138856 transitions. [2024-11-16 03:10:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:44,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 282 [2024-11-16 03:10:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:44,308 INFO L225 Difference]: With dead ends: 113864 [2024-11-16 03:10:44,309 INFO L226 Difference]: Without dead ends: 72855 [2024-11-16 03:10:44,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:44,356 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 230 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:44,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 345 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:10:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72855 states. [2024-11-16 03:10:45,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72855 to 72437. [2024-11-16 03:10:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72437 states, 72436 states have (on average 1.1744022309348943) internal successors, (85069), 72436 states have internal predecessors, (85069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72437 states to 72437 states and 85069 transitions. [2024-11-16 03:10:46,059 INFO L78 Accepts]: Start accepts. Automaton has 72437 states and 85069 transitions. Word has length 282 [2024-11-16 03:10:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:46,059 INFO L471 AbstractCegarLoop]: Abstraction has 72437 states and 85069 transitions. [2024-11-16 03:10:46,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:46,060 INFO L276 IsEmpty]: Start isEmpty. Operand 72437 states and 85069 transitions. [2024-11-16 03:10:46,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-16 03:10:46,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:46,089 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:10:46,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 03:10:46,090 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:46,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:46,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1154417019, now seen corresponding path program 1 times [2024-11-16 03:10:46,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:46,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295810469] [2024-11-16 03:10:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:46,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 209 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 03:10:46,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:46,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295810469] [2024-11-16 03:10:46,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295810469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:10:46,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471408862] [2024-11-16 03:10:46,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:46,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:10:46,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:10:47,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:10:47,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 03:10:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:47,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:10:47,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:10:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-16 03:10:47,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:10:47,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471408862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:47,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:10:47,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:10:47,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615895482] [2024-11-16 03:10:47,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:47,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:47,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:47,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:10:47,260 INFO L87 Difference]: Start difference. First operand 72437 states and 85069 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:48,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:48,682 INFO L93 Difference]: Finished difference Result 188134 states and 220523 transitions. [2024-11-16 03:10:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:48,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 373 [2024-11-16 03:10:48,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:48,854 INFO L225 Difference]: With dead ends: 188134 [2024-11-16 03:10:48,854 INFO L226 Difference]: Without dead ends: 115699 [2024-11-16 03:10:48,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:10:48,921 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 244 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:48,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 317 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:10:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115699 states. [2024-11-16 03:10:50,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115699 to 101397. [2024-11-16 03:10:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101397 states, 101396 states have (on average 1.1344333109787368) internal successors, (115027), 101396 states have internal predecessors, (115027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101397 states to 101397 states and 115027 transitions. [2024-11-16 03:10:50,862 INFO L78 Accepts]: Start accepts. Automaton has 101397 states and 115027 transitions. Word has length 373 [2024-11-16 03:10:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:50,862 INFO L471 AbstractCegarLoop]: Abstraction has 101397 states and 115027 transitions. [2024-11-16 03:10:50,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:50,863 INFO L276 IsEmpty]: Start isEmpty. Operand 101397 states and 115027 transitions. [2024-11-16 03:10:50,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-16 03:10:50,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:50,912 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:50,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 03:10:51,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:10:51,114 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:51,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:51,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2069500157, now seen corresponding path program 1 times [2024-11-16 03:10:51,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:51,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468128006] [2024-11-16 03:10:51,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:51,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-16 03:10:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:51,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468128006] [2024-11-16 03:10:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468128006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:51,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:51,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:10:51,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856155397] [2024-11-16 03:10:51,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:51,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:10:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:51,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:10:51,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:51,388 INFO L87 Difference]: Start difference. First operand 101397 states and 115027 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 2 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:52,690 INFO L93 Difference]: Finished difference Result 275159 states and 311475 transitions. [2024-11-16 03:10:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:10:52,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 2 states have internal predecessors, (299), 0 states have call successors, (0), 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 416 [2024-11-16 03:10:52,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:52,917 INFO L225 Difference]: With dead ends: 275159 [2024-11-16 03:10:52,918 INFO L226 Difference]: Without dead ends: 173764 [2024-11-16 03:10:52,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:10:52,990 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 205 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:52,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 456 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:10:53,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173764 states. [2024-11-16 03:10:55,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173764 to 173761. [2024-11-16 03:10:55,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173761 states, 173760 states have (on average 1.1296731123388581) internal successors, (196292), 173760 states have internal predecessors, (196292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173761 states to 173761 states and 196292 transitions. [2024-11-16 03:10:55,611 INFO L78 Accepts]: Start accepts. Automaton has 173761 states and 196292 transitions. Word has length 416 [2024-11-16 03:10:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:10:55,611 INFO L471 AbstractCegarLoop]: Abstraction has 173761 states and 196292 transitions. [2024-11-16 03:10:55,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 2 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 173761 states and 196292 transitions. [2024-11-16 03:10:55,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-16 03:10:55,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:10:55,653 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:10:55,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 03:10:55,654 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:10:55,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:10:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1926835993, now seen corresponding path program 1 times [2024-11-16 03:10:55,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:10:55,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205044099] [2024-11-16 03:10:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:10:55,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:10:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:10:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-16 03:10:56,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:10:56,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205044099] [2024-11-16 03:10:56,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205044099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:10:56,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:10:56,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:10:56,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051673403] [2024-11-16 03:10:56,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:10:56,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:10:56,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:10:56,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:10:56,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:10:56,664 INFO L87 Difference]: Start difference. First operand 173761 states and 196292 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:10:58,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:10:58,725 INFO L93 Difference]: Finished difference Result 399461 states and 451227 transitions. [2024-11-16 03:10:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:10:58,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 421 [2024-11-16 03:10:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:10:59,023 INFO L225 Difference]: With dead ends: 399461 [2024-11-16 03:10:59,024 INFO L226 Difference]: Without dead ends: 225702 [2024-11-16 03:10:59,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:10:59,117 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 465 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:10:59,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 92 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:10:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225702 states. [2024-11-16 03:11:02,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225702 to 219865. [2024-11-16 03:11:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219865 states, 219864 states have (on average 1.1104319033584398) internal successors, (244144), 219864 states have internal predecessors, (244144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219865 states to 219865 states and 244144 transitions. [2024-11-16 03:11:02,567 INFO L78 Accepts]: Start accepts. Automaton has 219865 states and 244144 transitions. Word has length 421 [2024-11-16 03:11:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:02,568 INFO L471 AbstractCegarLoop]: Abstraction has 219865 states and 244144 transitions. [2024-11-16 03:11:02,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 219865 states and 244144 transitions. [2024-11-16 03:11:02,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-16 03:11:02,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:02,633 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:02,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 03:11:02,633 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:02,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1699685774, now seen corresponding path program 1 times [2024-11-16 03:11:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878827647] [2024-11-16 03:11:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 117 proven. 7 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-16 03:11:04,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:04,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878827647] [2024-11-16 03:11:04,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878827647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:11:04,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735792411] [2024-11-16 03:11:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:04,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:11:04,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:11:04,911 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:11:04,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 03:11:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:05,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:11:05,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:11:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-16 03:11:05,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:11:05,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735792411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:05,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:11:05,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:11:05,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159464875] [2024-11-16 03:11:05,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:05,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:05,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:05,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:11:05,428 INFO L87 Difference]: Start difference. First operand 219865 states and 244144 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:06,815 INFO L93 Difference]: Finished difference Result 439756 states and 488338 transitions. [2024-11-16 03:11:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:06,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 449 [2024-11-16 03:11:06,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:07,665 INFO L225 Difference]: With dead ends: 439756 [2024-11-16 03:11:07,665 INFO L226 Difference]: Without dead ends: 219893 [2024-11-16 03:11:07,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:11:07,797 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 73 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:07,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 121 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:11:07,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219893 states. [2024-11-16 03:11:10,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219893 to 218233. [2024-11-16 03:11:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218233 states, 218232 states have (on average 1.0940054620770556) internal successors, (238747), 218232 states have internal predecessors, (238747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218233 states to 218233 states and 238747 transitions. [2024-11-16 03:11:11,183 INFO L78 Accepts]: Start accepts. Automaton has 218233 states and 238747 transitions. Word has length 449 [2024-11-16 03:11:11,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:11,184 INFO L471 AbstractCegarLoop]: Abstraction has 218233 states and 238747 transitions. [2024-11-16 03:11:11,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 218233 states and 238747 transitions. [2024-11-16 03:11:11,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-11-16 03:11:11,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:11,253 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:11,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 03:11:11,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 03:11:11,454 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:11,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:11,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2022707644, now seen corresponding path program 1 times [2024-11-16 03:11:11,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:11,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685966915] [2024-11-16 03:11:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:11,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 64 proven. 198 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-16 03:11:14,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:14,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685966915] [2024-11-16 03:11:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685966915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:11:14,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990848627] [2024-11-16 03:11:14,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:14,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:11:14,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:11:14,540 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:11:14,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 03:11:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:14,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:11:14,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:11:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-16 03:11:15,232 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:11:15,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990848627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:15,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:11:15,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-16 03:11:15,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048228466] [2024-11-16 03:11:15,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:15,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:11:15,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:15,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:11:15,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:11:15,235 INFO L87 Difference]: Start difference. First operand 218233 states and 238747 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:17,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:17,191 INFO L93 Difference]: Finished difference Result 434248 states and 475066 transitions. [2024-11-16 03:11:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:11:17,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 [2024-11-16 03:11:17,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:17,519 INFO L225 Difference]: With dead ends: 434248 [2024-11-16 03:11:17,519 INFO L226 Difference]: Without dead ends: 216017 [2024-11-16 03:11:17,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:11:17,643 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 95 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:17,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 296 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:11:17,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216017 states. [2024-11-16 03:11:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216017 to 211909. [2024-11-16 03:11:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211909 states, 211908 states have (on average 1.0886280838854596) internal successors, (230689), 211908 states have internal predecessors, (230689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211909 states to 211909 states and 230689 transitions. [2024-11-16 03:11:20,600 INFO L78 Accepts]: Start accepts. Automaton has 211909 states and 230689 transitions. Word has length 470 [2024-11-16 03:11:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:20,601 INFO L471 AbstractCegarLoop]: Abstraction has 211909 states and 230689 transitions. [2024-11-16 03:11:20,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 211909 states and 230689 transitions. [2024-11-16 03:11:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-16 03:11:20,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:20,651 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:11:20,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 03:11:20,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 03:11:20,852 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:20,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1800129658, now seen corresponding path program 1 times [2024-11-16 03:11:20,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:20,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725587448] [2024-11-16 03:11:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:20,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 333 proven. 7 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-16 03:11:22,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:11:22,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725587448] [2024-11-16 03:11:22,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725587448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:11:22,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432257] [2024-11-16 03:11:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:22,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:11:22,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:11:22,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:11:22,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 03:11:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:11:22,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:11:22,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:11:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-16 03:11:22,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:11:22,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:11:22,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:11:22,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2024-11-16 03:11:22,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807127709] [2024-11-16 03:11:22,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:11:22,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:11:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:11:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:11:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:11:22,753 INFO L87 Difference]: Start difference. First operand 211909 states and 230689 transitions. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:11:24,876 INFO L93 Difference]: Finished difference Result 454910 states and 495338 transitions. [2024-11-16 03:11:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:11:24,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 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 483 [2024-11-16 03:11:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:11:25,205 INFO L225 Difference]: With dead ends: 454910 [2024-11-16 03:11:25,206 INFO L226 Difference]: Without dead ends: 243003 [2024-11-16 03:11:25,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:11:25,352 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 384 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:11:25,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 126 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 03:11:25,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243003 states. [2024-11-16 03:11:28,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243003 to 240511. [2024-11-16 03:11:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240511 states, 240510 states have (on average 1.0753856388507754) internal successors, (258641), 240510 states have internal predecessors, (258641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240511 states to 240511 states and 258641 transitions. [2024-11-16 03:11:29,215 INFO L78 Accepts]: Start accepts. Automaton has 240511 states and 258641 transitions. Word has length 483 [2024-11-16 03:11:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:11:29,215 INFO L471 AbstractCegarLoop]: Abstraction has 240511 states and 258641 transitions. [2024-11-16 03:11:29,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:11:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 240511 states and 258641 transitions. [2024-11-16 03:11:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-16 03:11:29,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:11:29,275 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:11:29,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 03:11:29,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:11:29,477 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:11:29,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:11:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash 533410594, now seen corresponding path program 1 times [2024-11-16 03:11:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:11:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454336376] [2024-11-16 03:11:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:11:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:11:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat