./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label29.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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_label29.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 372b0f8557f493ed9d29c5f8057b8dc54ad330866696fd4878e863a88379edbf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:40:23,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:40:23,322 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:40:23,331 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:40:23,331 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:40:23,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:40:23,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:40:23,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:40:23,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:40:23,364 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:40:23,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:40:23,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:40:23,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:40:23,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:40:23,368 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:40:23,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:40:23,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:40:23,369 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:40:23,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:40:23,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:40:23,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:40:23,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:40:23,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:40:23,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:40:23,371 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:40:23,371 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:40:23,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:40:23,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:40:23,372 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:40:23,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:40:23,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:40:23,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:40:23,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:40:23,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:40:23,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:40:23,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:40:23,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:40:23,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:40:23,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:40:23,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:40:23,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:40:23,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:40:23,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 372b0f8557f493ed9d29c5f8057b8dc54ad330866696fd4878e863a88379edbf [2024-11-09 18:40:23,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:40:23,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:40:23,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:40:23,685 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:40:23,686 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:40:23,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2024-11-09 18:40:25,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:40:25,445 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:40:25,446 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2024-11-09 18:40:25,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ab8f6010/3fc362e4d35546a1b4584bfe3df4084e/FLAGe53e2edae [2024-11-09 18:40:25,684 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ab8f6010/3fc362e4d35546a1b4584bfe3df4084e [2024-11-09 18:40:25,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:40:25,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:40:25,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:40:25,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:40:25,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:40:25,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:40:25" (1/1) ... [2024-11-09 18:40:25,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5285aaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:25, skipping insertion in model container [2024-11-09 18:40:25,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:40:25" (1/1) ... [2024-11-09 18:40:25,769 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:40:26,291 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_label29.c[58258,58271] [2024-11-09 18:40:26,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:40:26,346 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:40:26,520 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_label29.c[58258,58271] [2024-11-09 18:40:26,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:40:26,555 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:40:26,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26 WrapperNode [2024-11-09 18:40:26,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:40:26,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:40:26,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:40:26,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:40:26,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,702 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-09 18:40:26,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:40:26,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:40:26,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:40:26,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:40:26,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,723 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,760 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]. [2024-11-09 18:40:26,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,808 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:40:26,847 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:40:26,847 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:40:26,848 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:40:26,849 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (1/1) ... [2024-11-09 18:40:26,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:40:26,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:40:26,884 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) [2024-11-09 18:40:26,888 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 [2024-11-09 18:40:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:40:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:40:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:40:26,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:40:27,031 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:40:27,033 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:40:28,972 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-09 18:40:28,973 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:40:28,994 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:40:28,995 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:40:28,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:40:28 BoogieIcfgContainer [2024-11-09 18:40:28,995 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:40:28,998 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:40:28,998 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:40:29,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:40:29,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:40:25" (1/3) ... [2024-11-09 18:40:29,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1247591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:40:29, skipping insertion in model container [2024-11-09 18:40:29,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:26" (2/3) ... [2024-11-09 18:40:29,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1247591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:40:29, skipping insertion in model container [2024-11-09 18:40:29,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:40:28" (3/3) ... [2024-11-09 18:40:29,004 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label29.c [2024-11-09 18:40:29,020 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:40:29,021 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:40:29,101 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:40:29,109 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;@5dc7b96f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:40:29,110 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:40:29,116 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) [2024-11-09 18:40:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-09 18:40:29,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:29,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:29,142 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:29,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1869648701, now seen corresponding path program 1 times [2024-11-09 18:40:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:29,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035526058] [2024-11-09 18:40:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:29,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:40:30,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:30,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035526058] [2024-11-09 18:40:30,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035526058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:30,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:30,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:30,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370431020] [2024-11-09 18:40:30,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:30,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:30,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:30,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:30,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:30,332 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 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:31,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:31,433 INFO L93 Difference]: Finished difference Result 829 states and 1465 transitions. [2024-11-09 18:40:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:31,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2024-11-09 18:40:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:31,448 INFO L225 Difference]: With dead ends: 829 [2024-11-09 18:40:31,448 INFO L226 Difference]: Without dead ends: 447 [2024-11-09 18:40:31,453 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 [2024-11-09 18:40:31,456 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 53 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:31,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 248 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 18:40:31,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-09 18:40:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 446. [2024-11-09 18:40:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.4179775280898876) internal successors, (631), 445 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 631 transitions. [2024-11-09 18:40:31,516 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 631 transitions. Word has length 180 [2024-11-09 18:40:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:31,517 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 631 transitions. [2024-11-09 18:40:31,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 631 transitions. [2024-11-09 18:40:31,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-09 18:40:31,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:31,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:31,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:40:31,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:31,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash 467338441, now seen corresponding path program 1 times [2024-11-09 18:40:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:31,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376239160] [2024-11-09 18:40:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:40:31,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:31,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376239160] [2024-11-09 18:40:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376239160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:31,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:31,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:31,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874267040] [2024-11-09 18:40:31,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:31,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:31,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:31,708 INFO L87 Difference]: Start difference. First operand 446 states and 631 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 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) [2024-11-09 18:40:32,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:32,450 INFO L93 Difference]: Finished difference Result 1318 states and 1872 transitions. [2024-11-09 18:40:32,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:32,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 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 189 [2024-11-09 18:40:32,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:32,455 INFO L225 Difference]: With dead ends: 1318 [2024-11-09 18:40:32,455 INFO L226 Difference]: Without dead ends: 874 [2024-11-09 18:40:32,457 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 [2024-11-09 18:40:32,458 INFO L432 NwaCegarLoop]: 80 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, 97 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 [2024-11-09 18:40:32,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 97 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:40:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-11-09 18:40:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 860. [2024-11-09 18:40:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 1.3841676367869615) internal successors, (1189), 859 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:32,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1189 transitions. [2024-11-09 18:40:32,492 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1189 transitions. Word has length 189 [2024-11-09 18:40:32,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:32,493 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1189 transitions. [2024-11-09 18:40:32,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 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) [2024-11-09 18:40:32,493 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1189 transitions. [2024-11-09 18:40:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-09 18:40:32,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:32,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:32,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:40:32,497 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:32,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:32,498 INFO L85 PathProgramCache]: Analyzing trace with hash 299914023, now seen corresponding path program 1 times [2024-11-09 18:40:32,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:32,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020025946] [2024-11-09 18:40:32,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:32,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:40:32,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:32,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020025946] [2024-11-09 18:40:32,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020025946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:32,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:32,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:32,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704977190] [2024-11-09 18:40:32,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:32,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:32,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:32,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:32,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:32,676 INFO L87 Difference]: Start difference. First operand 860 states and 1189 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:33,118 INFO L93 Difference]: Finished difference Result 1698 states and 2348 transitions. [2024-11-09 18:40:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:33,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2024-11-09 18:40:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:33,122 INFO L225 Difference]: With dead ends: 1698 [2024-11-09 18:40:33,123 INFO L226 Difference]: Without dead ends: 840 [2024-11-09 18:40:33,124 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 [2024-11-09 18:40:33,125 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 [2024-11-09 18:40:33,126 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] [2024-11-09 18:40:33,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2024-11-09 18:40:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2024-11-09 18:40:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.3432657926102503) internal successors, (1127), 839 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1127 transitions. [2024-11-09 18:40:33,154 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1127 transitions. Word has length 194 [2024-11-09 18:40:33,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:33,155 INFO L471 AbstractCegarLoop]: Abstraction has 840 states and 1127 transitions. [2024-11-09 18:40:33,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1127 transitions. [2024-11-09 18:40:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-09 18:40:33,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:33,159 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:33,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:40:33,160 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:33,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1473892919, now seen corresponding path program 1 times [2024-11-09 18:40:33,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:33,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461346691] [2024-11-09 18:40:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:40:33,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:33,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461346691] [2024-11-09 18:40:33,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461346691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:33,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:33,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:33,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715515102] [2024-11-09 18:40:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:33,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:33,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:33,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:33,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:33,531 INFO L87 Difference]: Start difference. First operand 840 states and 1127 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:34,377 INFO L93 Difference]: Finished difference Result 2515 states and 3376 transitions. [2024-11-09 18:40:34,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:34,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 199 [2024-11-09 18:40:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:34,383 INFO L225 Difference]: With dead ends: 2515 [2024-11-09 18:40:34,384 INFO L226 Difference]: Without dead ends: 1677 [2024-11-09 18:40:34,385 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 [2024-11-09 18:40:34,386 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 [2024-11-09 18:40:34,387 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] [2024-11-09 18:40:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2024-11-09 18:40:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1674. [2024-11-09 18:40:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 1.337118947997609) internal successors, (2237), 1673 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:34,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2237 transitions. [2024-11-09 18:40:34,421 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2237 transitions. Word has length 199 [2024-11-09 18:40:34,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:34,422 INFO L471 AbstractCegarLoop]: Abstraction has 1674 states and 2237 transitions. [2024-11-09 18:40:34,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:34,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2237 transitions. [2024-11-09 18:40:34,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-09 18:40:34,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:34,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:34,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:40:34,426 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:34,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:34,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1082964658, now seen corresponding path program 1 times [2024-11-09 18:40:34,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:34,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339476224] [2024-11-09 18:40:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:34,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:40:34,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:34,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339476224] [2024-11-09 18:40:34,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339476224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:40:34,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862792955] [2024-11-09 18:40:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:34,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:34,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:40:34,716 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) [2024-11-09 18:40:34,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:40:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:34,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:40:34,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:40:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:40:34,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:40:34,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862792955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:34,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:40:34,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 18:40:34,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343473622] [2024-11-09 18:40:34,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:34,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:34,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:34,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:34,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:40:34,984 INFO L87 Difference]: Start difference. First operand 1674 states and 2237 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:35,251 INFO L93 Difference]: Finished difference Result 5013 states and 6702 transitions. [2024-11-09 18:40:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:35,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-11-09 18:40:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:35,265 INFO L225 Difference]: With dead ends: 5013 [2024-11-09 18:40:35,266 INFO L226 Difference]: Without dead ends: 3341 [2024-11-09 18:40:35,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:40:35,272 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 [2024-11-09 18:40:35,272 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] [2024-11-09 18:40:35,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2024-11-09 18:40:35,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 3335. [2024-11-09 18:40:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3335 states, 3334 states have (on average 1.3365326934613078) internal successors, (4456), 3334 states have internal predecessors, (4456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3335 states to 3335 states and 4456 transitions. [2024-11-09 18:40:35,346 INFO L78 Accepts]: Start accepts. Automaton has 3335 states and 4456 transitions. Word has length 203 [2024-11-09 18:40:35,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:35,346 INFO L471 AbstractCegarLoop]: Abstraction has 3335 states and 4456 transitions. [2024-11-09 18:40:35,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3335 states and 4456 transitions. [2024-11-09 18:40:35,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-09 18:40:35,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:35,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:35,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:40:35,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:35,553 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:35,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash -347064535, now seen corresponding path program 1 times [2024-11-09 18:40:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:35,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964773511] [2024-11-09 18:40:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:35,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:40:35,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964773511] [2024-11-09 18:40:35,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964773511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:40:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535740595] [2024-11-09 18:40:35,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:35,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:35,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:40:35,863 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) [2024-11-09 18:40:35,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:40:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:36,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:40:36,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:40:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:40:36,049 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:40:36,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535740595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:36,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:40:36,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 18:40:36,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837076965] [2024-11-09 18:40:36,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:36,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:36,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:36,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:36,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:40:36,052 INFO L87 Difference]: Start difference. First operand 3335 states and 4456 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:36,846 INFO L93 Difference]: Finished difference Result 8308 states and 11462 transitions. [2024-11-09 18:40:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:36,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2024-11-09 18:40:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:36,864 INFO L225 Difference]: With dead ends: 8308 [2024-11-09 18:40:36,864 INFO L226 Difference]: Without dead ends: 4975 [2024-11-09 18:40:36,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:40:36,873 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 213 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:36,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 369 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:40:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4975 states. [2024-11-09 18:40:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4975 to 4967. [2024-11-09 18:40:36,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4967 states, 4966 states have (on average 1.2637937978252114) internal successors, (6276), 4966 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4967 states to 4967 states and 6276 transitions. [2024-11-09 18:40:37,054 INFO L78 Accepts]: Start accepts. Automaton has 4967 states and 6276 transitions. Word has length 205 [2024-11-09 18:40:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:37,055 INFO L471 AbstractCegarLoop]: Abstraction has 4967 states and 6276 transitions. [2024-11-09 18:40:37,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:37,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4967 states and 6276 transitions. [2024-11-09 18:40:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-09 18:40:37,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:37,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:37,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:40:37,263 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,SelfDestructingSolverStorable5 [2024-11-09 18:40:37,264 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:37,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:37,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1268433195, now seen corresponding path program 1 times [2024-11-09 18:40:37,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:37,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895851828] [2024-11-09 18:40:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:37,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:40:38,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:38,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895851828] [2024-11-09 18:40:38,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895851828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:40:38,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887788669] [2024-11-09 18:40:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:38,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:38,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:40:38,437 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) [2024-11-09 18:40:38,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:40:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:38,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:40:38,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:40:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:40:38,798 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:40:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887788669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:38,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:40:38,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:40:38,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929167232] [2024-11-09 18:40:38,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:38,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:38,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:38,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:38,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:40:38,800 INFO L87 Difference]: Start difference. First operand 4967 states and 6276 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:39,596 INFO L93 Difference]: Finished difference Result 14849 states and 18759 transitions. [2024-11-09 18:40:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:39,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 220 [2024-11-09 18:40:39,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:39,632 INFO L225 Difference]: With dead ends: 14849 [2024-11-09 18:40:39,632 INFO L226 Difference]: Without dead ends: 9884 [2024-11-09 18:40:39,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:40:39,643 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 73 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:39,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 315 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:40:39,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2024-11-09 18:40:39,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 9876. [2024-11-09 18:40:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9876 states, 9875 states have (on average 1.2071898734177215) internal successors, (11921), 9875 states have internal predecessors, (11921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9876 states to 9876 states and 11921 transitions. [2024-11-09 18:40:39,869 INFO L78 Accepts]: Start accepts. Automaton has 9876 states and 11921 transitions. Word has length 220 [2024-11-09 18:40:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:39,870 INFO L471 AbstractCegarLoop]: Abstraction has 9876 states and 11921 transitions. [2024-11-09 18:40:39,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 9876 states and 11921 transitions. [2024-11-09 18:40:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-09 18:40:39,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:39,881 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:39,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:40:40,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:40,083 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:40,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash 671326036, now seen corresponding path program 1 times [2024-11-09 18:40:40,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:40,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132846366] [2024-11-09 18:40:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:40,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 18:40:40,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:40,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132846366] [2024-11-09 18:40:40,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132846366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:40,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:40,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:40:40,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123637448] [2024-11-09 18:40:40,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:40,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:40:40,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:40,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:40:40,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:40:40,398 INFO L87 Difference]: Start difference. First operand 9876 states and 11921 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:41,228 INFO L93 Difference]: Finished difference Result 19765 states and 23869 transitions. [2024-11-09 18:40:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:40:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 254 [2024-11-09 18:40:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:41,259 INFO L225 Difference]: With dead ends: 19765 [2024-11-09 18:40:41,259 INFO L226 Difference]: Without dead ends: 9891 [2024-11-09 18:40:41,272 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 [2024-11-09 18:40:41,273 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 794 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:41,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 49 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:40:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9891 states. [2024-11-09 18:40:41,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9891 to 9876. [2024-11-09 18:40:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9876 states, 9875 states have (on average 1.1974683544303797) internal successors, (11825), 9875 states have internal predecessors, (11825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9876 states to 9876 states and 11825 transitions. [2024-11-09 18:40:41,465 INFO L78 Accepts]: Start accepts. Automaton has 9876 states and 11825 transitions. Word has length 254 [2024-11-09 18:40:41,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:41,467 INFO L471 AbstractCegarLoop]: Abstraction has 9876 states and 11825 transitions. [2024-11-09 18:40:41,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:41,467 INFO L276 IsEmpty]: Start isEmpty. Operand 9876 states and 11825 transitions. [2024-11-09 18:40:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-09 18:40:41,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:41,477 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:40:41,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 18:40:41,477 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:41,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash -80092756, now seen corresponding path program 1 times [2024-11-09 18:40:41,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:41,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781979845] [2024-11-09 18:40:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:41,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:40:41,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:41,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781979845] [2024-11-09 18:40:41,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781979845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:41,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:41,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:41,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105620772] [2024-11-09 18:40:41,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:41,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:41,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:41,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:41,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:41,696 INFO L87 Difference]: Start difference. First operand 9876 states and 11825 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:42,428 INFO L93 Difference]: Finished difference Result 19758 states and 23664 transitions. [2024-11-09 18:40:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:42,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2024-11-09 18:40:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:42,444 INFO L225 Difference]: With dead ends: 19758 [2024-11-09 18:40:42,444 INFO L226 Difference]: Without dead ends: 9884 [2024-11-09 18:40:42,455 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 [2024-11-09 18:40:42,456 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 166 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:42,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 126 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:40:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2024-11-09 18:40:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 9876. [2024-11-09 18:40:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9876 states, 9875 states have (on average 1.1654683544303797) internal successors, (11509), 9875 states have internal predecessors, (11509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9876 states to 9876 states and 11509 transitions. [2024-11-09 18:40:42,611 INFO L78 Accepts]: Start accepts. Automaton has 9876 states and 11509 transitions. Word has length 259 [2024-11-09 18:40:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:42,611 INFO L471 AbstractCegarLoop]: Abstraction has 9876 states and 11509 transitions. [2024-11-09 18:40:42,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9876 states and 11509 transitions. [2024-11-09 18:40:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-09 18:40:42,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:42,621 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:40:42,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 18:40:42,622 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:42,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:42,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1472775651, now seen corresponding path program 1 times [2024-11-09 18:40:42,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:42,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759208491] [2024-11-09 18:40:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:42,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:40:42,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:42,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759208491] [2024-11-09 18:40:42,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759208491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:42,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:42,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717317458] [2024-11-09 18:40:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:42,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:42,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:42,870 INFO L87 Difference]: Start difference. First operand 9876 states and 11509 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:43,539 INFO L93 Difference]: Finished difference Result 23014 states and 27416 transitions. [2024-11-09 18:40:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:43,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 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 259 [2024-11-09 18:40:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:43,562 INFO L225 Difference]: With dead ends: 23014 [2024-11-09 18:40:43,562 INFO L226 Difference]: Without dead ends: 13140 [2024-11-09 18:40:43,576 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 [2024-11-09 18:40:43,577 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 151 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:43,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 154 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:40:43,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13140 states. [2024-11-09 18:40:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13140 to 13140. [2024-11-09 18:40:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13140 states, 13139 states have (on average 1.1456731866960956) internal successors, (15053), 13139 states have internal predecessors, (15053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13140 states to 13140 states and 15053 transitions. [2024-11-09 18:40:43,760 INFO L78 Accepts]: Start accepts. Automaton has 13140 states and 15053 transitions. Word has length 259 [2024-11-09 18:40:43,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:43,760 INFO L471 AbstractCegarLoop]: Abstraction has 13140 states and 15053 transitions. [2024-11-09 18:40:43,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:43,761 INFO L276 IsEmpty]: Start isEmpty. Operand 13140 states and 15053 transitions. [2024-11-09 18:40:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-09 18:40:43,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:43,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:43,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 18:40:43,772 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:43,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:43,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1547179295, now seen corresponding path program 1 times [2024-11-09 18:40:43,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:43,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572769398] [2024-11-09 18:40:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 18:40:44,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:44,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572769398] [2024-11-09 18:40:44,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572769398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:44,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:44,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:44,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720164431] [2024-11-09 18:40:44,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:44,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:44,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:44,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:44,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:44,052 INFO L87 Difference]: Start difference. First operand 13140 states and 15053 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:44,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:44,815 INFO L93 Difference]: Finished difference Result 32841 states and 37489 transitions. [2024-11-09 18:40:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:44,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2024-11-09 18:40:44,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:44,860 INFO L225 Difference]: With dead ends: 32841 [2024-11-09 18:40:44,861 INFO L226 Difference]: Without dead ends: 19703 [2024-11-09 18:40:44,878 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 [2024-11-09 18:40:44,879 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 153 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:44,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 160 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:40:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2024-11-09 18:40:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 19697. [2024-11-09 18:40:45,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19697 states, 19696 states have (on average 1.1378960194963443) internal successors, (22412), 19696 states have internal predecessors, (22412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19697 states to 19697 states and 22412 transitions. [2024-11-09 18:40:45,115 INFO L78 Accepts]: Start accepts. Automaton has 19697 states and 22412 transitions. Word has length 271 [2024-11-09 18:40:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:45,116 INFO L471 AbstractCegarLoop]: Abstraction has 19697 states and 22412 transitions. [2024-11-09 18:40:45,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 19697 states and 22412 transitions. [2024-11-09 18:40:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-09 18:40:45,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:45,132 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:45,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 18:40:45,132 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:45,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash 314202745, now seen corresponding path program 1 times [2024-11-09 18:40:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877230123] [2024-11-09 18:40:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:45,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:40:45,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:45,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877230123] [2024-11-09 18:40:45,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877230123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:45,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:45,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:40:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562504559] [2024-11-09 18:40:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:45,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:45,575 INFO L87 Difference]: Start difference. First operand 19697 states and 22412 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:46,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:46,396 INFO L93 Difference]: Finished difference Result 48392 states and 55164 transitions. [2024-11-09 18:40:46,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:46,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 276 [2024-11-09 18:40:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:46,438 INFO L225 Difference]: With dead ends: 48392 [2024-11-09 18:40:46,438 INFO L226 Difference]: Without dead ends: 28697 [2024-11-09 18:40:46,463 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 [2024-11-09 18:40:46,464 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 135 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:46,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 380 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:40:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28697 states. [2024-11-09 18:40:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28697 to 26245. [2024-11-09 18:40:46,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26245 states, 26244 states have (on average 1.1306965401615607) internal successors, (29674), 26244 states have internal predecessors, (29674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26245 states to 26245 states and 29674 transitions. [2024-11-09 18:40:46,791 INFO L78 Accepts]: Start accepts. Automaton has 26245 states and 29674 transitions. Word has length 276 [2024-11-09 18:40:46,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:46,792 INFO L471 AbstractCegarLoop]: Abstraction has 26245 states and 29674 transitions. [2024-11-09 18:40:46,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 26245 states and 29674 transitions. [2024-11-09 18:40:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-09 18:40:46,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:46,905 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:46,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 18:40:46,905 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:46,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:46,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2039156626, now seen corresponding path program 1 times [2024-11-09 18:40:46,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:46,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279580821] [2024-11-09 18:40:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:46,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 105 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 18:40:48,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:48,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279580821] [2024-11-09 18:40:48,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279580821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:40:48,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317491889] [2024-11-09 18:40:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:48,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:48,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:40:48,225 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) [2024-11-09 18:40:48,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:40:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:48,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:40:48,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:40:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 18:40:48,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:40:48,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317491889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:48,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:40:48,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 18:40:48,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184315591] [2024-11-09 18:40:48,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:48,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:48,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:48,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:48,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:40:48,522 INFO L87 Difference]: Start difference. First operand 26245 states and 29674 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:49,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:49,227 INFO L93 Difference]: Finished difference Result 67241 states and 76480 transitions. [2024-11-09 18:40:49,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:49,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 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 279 [2024-11-09 18:40:49,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:49,277 INFO L225 Difference]: With dead ends: 67241 [2024-11-09 18:40:49,278 INFO L226 Difference]: Without dead ends: 40998 [2024-11-09 18:40:49,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:40:49,303 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 181 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:49,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 108 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:40:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40998 states. [2024-11-09 18:40:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40998 to 36081. [2024-11-09 18:40:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36081 states, 36080 states have (on average 1.134090909090909) internal successors, (40918), 36080 states have internal predecessors, (40918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36081 states to 36081 states and 40918 transitions. [2024-11-09 18:40:49,759 INFO L78 Accepts]: Start accepts. Automaton has 36081 states and 40918 transitions. Word has length 279 [2024-11-09 18:40:49,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:49,760 INFO L471 AbstractCegarLoop]: Abstraction has 36081 states and 40918 transitions. [2024-11-09 18:40:49,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:49,760 INFO L276 IsEmpty]: Start isEmpty. Operand 36081 states and 40918 transitions. [2024-11-09 18:40:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-09 18:40:49,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:49,775 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:40:49,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:40:49,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:49,977 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:49,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:49,977 INFO L85 PathProgramCache]: Analyzing trace with hash 858081659, now seen corresponding path program 1 times [2024-11-09 18:40:49,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:49,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156668242] [2024-11-09 18:40:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:49,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 18:40:50,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:50,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156668242] [2024-11-09 18:40:50,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156668242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:50,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:50,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:50,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573743462] [2024-11-09 18:40:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:50,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:50,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:50,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:50,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:50,348 INFO L87 Difference]: Start difference. First operand 36081 states and 40918 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:51,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:51,271 INFO L93 Difference]: Finished difference Result 93669 states and 105729 transitions. [2024-11-09 18:40:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:51,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 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 288 [2024-11-09 18:40:51,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:51,345 INFO L225 Difference]: With dead ends: 93669 [2024-11-09 18:40:51,345 INFO L226 Difference]: Without dead ends: 57590 [2024-11-09 18:40:51,386 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 [2024-11-09 18:40:51,387 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 199 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:51,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 145 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:40:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57590 states. [2024-11-09 18:40:52,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57590 to 57586. [2024-11-09 18:40:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57586 states, 57585 states have (on average 1.1240253538247809) internal successors, (64727), 57585 states have internal predecessors, (64727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57586 states to 57586 states and 64727 transitions. [2024-11-09 18:40:52,578 INFO L78 Accepts]: Start accepts. Automaton has 57586 states and 64727 transitions. Word has length 288 [2024-11-09 18:40:52,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:52,578 INFO L471 AbstractCegarLoop]: Abstraction has 57586 states and 64727 transitions. [2024-11-09 18:40:52,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 57586 states and 64727 transitions. [2024-11-09 18:40:52,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-09 18:40:52,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:52,604 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:40:52,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 18:40:52,604 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:52,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1320515904, now seen corresponding path program 1 times [2024-11-09 18:40:52,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:52,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054948336] [2024-11-09 18:40:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:52,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 18:40:52,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:52,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054948336] [2024-11-09 18:40:52,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054948336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:52,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:52,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:52,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684067921] [2024-11-09 18:40:52,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:52,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:52,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:52,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:52,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:52,996 INFO L87 Difference]: Start difference. First operand 57586 states and 64727 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:54,053 INFO L93 Difference]: Finished difference Result 166066 states and 186496 transitions. [2024-11-09 18:40:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:54,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 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 290 [2024-11-09 18:40:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:54,188 INFO L225 Difference]: With dead ends: 166066 [2024-11-09 18:40:54,188 INFO L226 Difference]: Without dead ends: 108482 [2024-11-09 18:40:54,219 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 [2024-11-09 18:40:54,220 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 223 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:54,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 158 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:40:54,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108482 states. [2024-11-09 18:40:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108482 to 106841. [2024-11-09 18:40:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106841 states, 106840 states have (on average 1.111493822538375) internal successors, (118752), 106840 states have internal predecessors, (118752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106841 states to 106841 states and 118752 transitions. [2024-11-09 18:40:56,001 INFO L78 Accepts]: Start accepts. Automaton has 106841 states and 118752 transitions. Word has length 290 [2024-11-09 18:40:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:56,001 INFO L471 AbstractCegarLoop]: Abstraction has 106841 states and 118752 transitions. [2024-11-09 18:40:56,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:56,002 INFO L276 IsEmpty]: Start isEmpty. Operand 106841 states and 118752 transitions. [2024-11-09 18:40:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-09 18:40:56,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:56,027 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:40:56,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 18:40:56,027 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:56,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:56,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1847217353, now seen corresponding path program 1 times [2024-11-09 18:40:56,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:56,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817926299] [2024-11-09 18:40:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:56,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:40:56,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:56,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817926299] [2024-11-09 18:40:56,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817926299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:56,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:56,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:40:56,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180933072] [2024-11-09 18:40:56,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:56,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:40:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:40:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:40:56,548 INFO L87 Difference]: Start difference. First operand 106841 states and 118752 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:58,133 INFO L93 Difference]: Finished difference Result 222734 states and 248393 transitions. [2024-11-09 18:40:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:40:58,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-11-09 18:40:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:58,510 INFO L225 Difference]: With dead ends: 222734 [2024-11-09 18:40:58,510 INFO L226 Difference]: Without dead ends: 115895 [2024-11-09 18:40:58,547 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 [2024-11-09 18:40:58,548 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 340 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:58,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 101 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:40:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115895 states. [2024-11-09 18:40:59,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115895 to 107252. [2024-11-09 18:40:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107252 states, 107251 states have (on average 1.1116912662818994) internal successors, (119230), 107251 states have internal predecessors, (119230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107252 states to 107252 states and 119230 transitions. [2024-11-09 18:41:00,135 INFO L78 Accepts]: Start accepts. Automaton has 107252 states and 119230 transitions. Word has length 291 [2024-11-09 18:41:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:00,137 INFO L471 AbstractCegarLoop]: Abstraction has 107252 states and 119230 transitions. [2024-11-09 18:41:00,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 107252 states and 119230 transitions. [2024-11-09 18:41:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-09 18:41:00,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:00,175 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:00,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 18:41:00,176 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:00,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:00,176 INFO L85 PathProgramCache]: Analyzing trace with hash -491385342, now seen corresponding path program 1 times [2024-11-09 18:41:00,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:00,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2464037] [2024-11-09 18:41:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:00,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:41:01,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2464037] [2024-11-09 18:41:01,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2464037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694199238] [2024-11-09 18:41:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:01,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:01,556 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) [2024-11-09 18:41:01,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:41:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:01,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:41:01,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 18:41:01,937 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:01,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694199238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:01,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:01,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:41:01,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904960764] [2024-11-09 18:41:01,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:01,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:01,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:01,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:01,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:01,940 INFO L87 Difference]: Start difference. First operand 107252 states and 119230 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:02,952 INFO L93 Difference]: Finished difference Result 209316 states and 232666 transitions. [2024-11-09 18:41:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:02,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2024-11-09 18:41:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:03,075 INFO L225 Difference]: With dead ends: 209316 [2024-11-09 18:41:03,075 INFO L226 Difference]: Without dead ends: 102066 [2024-11-09 18:41:03,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:03,142 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 81 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:03,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 328 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:41:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102066 states. [2024-11-09 18:41:04,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102066 to 101244. [2024-11-09 18:41:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101244 states, 101243 states have (on average 1.0849540215125983) internal successors, (109844), 101243 states have internal predecessors, (109844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101244 states to 101244 states and 109844 transitions. [2024-11-09 18:41:04,908 INFO L78 Accepts]: Start accepts. Automaton has 101244 states and 109844 transitions. Word has length 294 [2024-11-09 18:41:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:04,913 INFO L471 AbstractCegarLoop]: Abstraction has 101244 states and 109844 transitions. [2024-11-09 18:41:04,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 101244 states and 109844 transitions. [2024-11-09 18:41:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-09 18:41:04,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:04,956 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:04,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:41:05,156 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,SelfDestructingSolverStorable16 [2024-11-09 18:41:05,157 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:05,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:05,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2111598478, now seen corresponding path program 1 times [2024-11-09 18:41:05,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:05,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969766211] [2024-11-09 18:41:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:05,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 72 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 18:41:05,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969766211] [2024-11-09 18:41:05,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969766211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225487052] [2024-11-09 18:41:05,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:05,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:05,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:05,460 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) [2024-11-09 18:41:05,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:41:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:05,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:41:05,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-09 18:41:05,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225487052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:05,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:05,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:41:05,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853033436] [2024-11-09 18:41:05,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:05,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:05,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:05,766 INFO L87 Difference]: Start difference. First operand 101244 states and 109844 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:06,986 INFO L93 Difference]: Finished difference Result 252753 states and 274441 transitions. [2024-11-09 18:41:06,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:06,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 296 [2024-11-09 18:41:06,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:07,150 INFO L225 Difference]: With dead ends: 252753 [2024-11-09 18:41:07,150 INFO L226 Difference]: Without dead ends: 151511 [2024-11-09 18:41:07,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:07,222 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 53 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:07,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 160 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:41:07,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151511 states. [2024-11-09 18:41:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151511 to 96760. [2024-11-09 18:41:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96760 states, 96759 states have (on average 1.0997013197738712) internal successors, (106406), 96759 states have internal predecessors, (106406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96760 states to 96760 states and 106406 transitions. [2024-11-09 18:41:09,505 INFO L78 Accepts]: Start accepts. Automaton has 96760 states and 106406 transitions. Word has length 296 [2024-11-09 18:41:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:09,505 INFO L471 AbstractCegarLoop]: Abstraction has 96760 states and 106406 transitions. [2024-11-09 18:41:09,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 96760 states and 106406 transitions. [2024-11-09 18:41:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-09 18:41:09,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:09,533 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:41:09,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:41:09,733 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,SelfDestructingSolverStorable17 [2024-11-09 18:41:09,734 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:09,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:09,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1811425035, now seen corresponding path program 1 times [2024-11-09 18:41:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:09,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138044505] [2024-11-09 18:41:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:09,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 156 proven. 7 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-09 18:41:11,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:11,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138044505] [2024-11-09 18:41:11,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138044505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:11,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991221723] [2024-11-09 18:41:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:11,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:11,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:11,231 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) [2024-11-09 18:41:11,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:41:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:11,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:41:11,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 18:41:11,651 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:11,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991221723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:11,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:11,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:41:11,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959292129] [2024-11-09 18:41:11,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:11,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:11,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:11,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:11,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:11,653 INFO L87 Difference]: Start difference. First operand 96760 states and 106406 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:12,738 INFO L93 Difference]: Finished difference Result 220512 states and 242003 transitions. [2024-11-09 18:41:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:12,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 409 [2024-11-09 18:41:12,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:12,890 INFO L225 Difference]: With dead ends: 220512 [2024-11-09 18:41:12,890 INFO L226 Difference]: Without dead ends: 123754 [2024-11-09 18:41:12,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:12,962 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 163 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:12,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 143 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:41:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123754 states. [2024-11-09 18:41:14,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123754 to 123742. [2024-11-09 18:41:14,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123742 states, 123741 states have (on average 1.0862042491979214) internal successors, (134408), 123741 states have internal predecessors, (134408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123742 states to 123742 states and 134408 transitions. [2024-11-09 18:41:15,096 INFO L78 Accepts]: Start accepts. Automaton has 123742 states and 134408 transitions. Word has length 409 [2024-11-09 18:41:15,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:15,097 INFO L471 AbstractCegarLoop]: Abstraction has 123742 states and 134408 transitions. [2024-11-09 18:41:15,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:15,097 INFO L276 IsEmpty]: Start isEmpty. Operand 123742 states and 134408 transitions. [2024-11-09 18:41:15,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-09 18:41:15,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:15,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:15,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:41:15,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:15,345 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:15,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:15,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2085313727, now seen corresponding path program 1 times [2024-11-09 18:41:15,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:15,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598737782] [2024-11-09 18:41:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 117 proven. 7 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-09 18:41:17,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:17,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598737782] [2024-11-09 18:41:17,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598737782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:17,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62394506] [2024-11-09 18:41:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:17,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:17,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:17,285 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:17,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:41:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:17,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:41:17,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-09 18:41:17,829 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:17,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62394506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:17,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:17,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:41:17,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133847370] [2024-11-09 18:41:17,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:17,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:17,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:17,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:17,832 INFO L87 Difference]: Start difference. First operand 123742 states and 134408 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) [2024-11-09 18:41:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:18,964 INFO L93 Difference]: Finished difference Result 245856 states and 267038 transitions. [2024-11-09 18:41:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:18,965 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 459 [2024-11-09 18:41:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:19,118 INFO L225 Difference]: With dead ends: 245856 [2024-11-09 18:41:19,118 INFO L226 Difference]: Without dead ends: 122116 [2024-11-09 18:41:19,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:19,203 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 85 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:19,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 296 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:41:19,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122116 states. [2024-11-09 18:41:20,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122116 to 121902. [2024-11-09 18:41:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121902 states, 121901 states have (on average 1.0822306625868532) internal successors, (131925), 121901 states have internal predecessors, (131925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121902 states to 121902 states and 131925 transitions. [2024-11-09 18:41:21,501 INFO L78 Accepts]: Start accepts. Automaton has 121902 states and 131925 transitions. Word has length 459 [2024-11-09 18:41:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:21,505 INFO L471 AbstractCegarLoop]: Abstraction has 121902 states and 131925 transitions. [2024-11-09 18:41:21,505 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) [2024-11-09 18:41:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 121902 states and 131925 transitions. [2024-11-09 18:41:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-09 18:41:21,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:21,555 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 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] [2024-11-09 18:41:21,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 18:41:21,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:21,757 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:21,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1142589412, now seen corresponding path program 1 times [2024-11-09 18:41:21,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:21,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327673692] [2024-11-09 18:41:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:21,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 195 proven. 7 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2024-11-09 18:41:23,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:23,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327673692] [2024-11-09 18:41:23,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327673692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173587499] [2024-11-09 18:41:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:23,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:23,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:23,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:23,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:41:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:23,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:41:23,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 428 proven. 141 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-09 18:41:23,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:41:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 428 proven. 141 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-09 18:41:23,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173587499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:41:23,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:41:23,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-11-09 18:41:23,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587152881] [2024-11-09 18:41:23,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:41:23,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:41:23,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:23,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:41:23,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:41:23,990 INFO L87 Difference]: Start difference. First operand 121902 states and 131925 transitions. Second operand has 7 states, 7 states have (on average 55.857142857142854) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:26,880 INFO L93 Difference]: Finished difference Result 350198 states and 378658 transitions. [2024-11-09 18:41:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:41:26,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 55.857142857142854) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 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 476 [2024-11-09 18:41:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:27,139 INFO L225 Difference]: With dead ends: 350198 [2024-11-09 18:41:27,140 INFO L226 Difference]: Without dead ends: 228298 [2024-11-09 18:41:27,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 958 GetRequests, 949 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:41:27,200 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 1362 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 3237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:27,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 266 Invalid, 3237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 3008 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 18:41:27,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228298 states. [2024-11-09 18:41:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228298 to 220737. [2024-11-09 18:41:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220737 states, 220736 states have (on average 1.0797604378080603) internal successors, (238342), 220736 states have internal predecessors, (238342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220737 states to 220737 states and 238342 transitions. [2024-11-09 18:41:31,164 INFO L78 Accepts]: Start accepts. Automaton has 220737 states and 238342 transitions. Word has length 476 [2024-11-09 18:41:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:31,164 INFO L471 AbstractCegarLoop]: Abstraction has 220737 states and 238342 transitions. [2024-11-09 18:41:31,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 55.857142857142854) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 220737 states and 238342 transitions. [2024-11-09 18:41:31,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-11-09 18:41:31,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:31,228 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:31,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 18:41:31,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:31,429 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:31,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:31,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1515626626, now seen corresponding path program 1 times [2024-11-09 18:41:31,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:31,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369033247] [2024-11-09 18:41:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:31,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 554 proven. 87 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-09 18:41:33,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:33,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369033247] [2024-11-09 18:41:33,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369033247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:33,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923472210] [2024-11-09 18:41:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:33,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:33,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:33,824 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:33,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:41:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:34,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:41:34,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-09 18:41:34,291 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:34,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923472210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:34,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:34,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 18:41:34,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18140256] [2024-11-09 18:41:34,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:34,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:34,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:34,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:34,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:41:34,294 INFO L87 Difference]: Start difference. First operand 220737 states and 238342 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:35,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:35,524 INFO L93 Difference]: Finished difference Result 383631 states and 413609 transitions. [2024-11-09 18:41:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:35,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 531 [2024-11-09 18:41:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:35,530 INFO L225 Difference]: With dead ends: 383631 [2024-11-09 18:41:35,530 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 18:41:35,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:41:35,657 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:35,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 328 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:41:35,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 18:41:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 18:41:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 18:41:35,660 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 531 [2024-11-09 18:41:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:35,661 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 18:41:35,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:35,661 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 18:41:35,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 18:41:35,664 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 18:41:35,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 18:41:35,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 18:41:35,868 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:35,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.