./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label00.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2539530bc7d482c73cf7743c3e3167fff4f274988d9be6836a02ba65f37bdc1a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:28:31,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:28:31,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:28:31,097 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:28:31,098 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:28:31,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:28:31,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:28:31,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:28:31,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:28:31,125 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:28:31,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:28:31,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:28:31,127 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:28:31,127 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:28:31,128 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:28:31,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:28:31,131 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:28:31,133 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:28:31,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:28:31,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:28:31,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:28:31,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:28:31,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:28:31,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:28:31,135 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:28:31,136 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:28:31,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:28:31,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:28:31,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:28:31,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:28:31,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:28:31,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:28:31,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:28:31,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:28:31,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:28:31,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:28:31,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:28:31,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:28:31,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:28:31,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:28:31,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:28:31,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:28:31,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2539530bc7d482c73cf7743c3e3167fff4f274988d9be6836a02ba65f37bdc1a [2024-11-08 10:28:31,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:28:31,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:28:31,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:28:31,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:28:31,433 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:28:31,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label00.c [2024-11-08 10:28:33,000 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:28:33,351 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:28:33,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label00.c [2024-11-08 10:28:33,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a22ce1f/3db246bf9ce747f989001b7f79ab856c/FLAGdfd411485 [2024-11-08 10:28:33,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a22ce1f/3db246bf9ce747f989001b7f79ab856c [2024-11-08 10:28:33,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:28:33,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:28:33,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:28:33,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:28:33,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:28:33,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:28:33" (1/1) ... [2024-11-08 10:28:33,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db74e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:33, skipping insertion in model container [2024-11-08 10:28:33,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:28:33" (1/1) ... [2024-11-08 10:28:33,659 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:28:34,256 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_label00.c[60148,60161] [2024-11-08 10:28:34,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:28:34,307 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:28:34,485 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_label00.c[60148,60161] [2024-11-08 10:28:34,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:28:34,520 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:28:34,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34 WrapperNode [2024-11-08 10:28:34,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:28:34,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:28:34,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:28:34,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:28:34,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,665 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-08 10:28:34,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:28:34,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:28:34,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:28:34,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:28:34,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,738 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 10:28:34,741 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:28:34,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:28:34,839 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:28:34,839 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:28:34,840 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (1/1) ... [2024-11-08 10:28:34,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:28:34,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:34,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 10:28:34,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 10:28:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:28:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:28:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:28:34,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:28:34,998 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:28:35,000 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:28:36,831 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-08 10:28:36,832 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:28:36,865 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:28:36,868 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 10:28:36,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:28:36 BoogieIcfgContainer [2024-11-08 10:28:36,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:28:36,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:28:36,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:28:36,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:28:36,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:28:33" (1/3) ... [2024-11-08 10:28:36,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44939292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:28:36, skipping insertion in model container [2024-11-08 10:28:36,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:34" (2/3) ... [2024-11-08 10:28:36,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44939292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:28:36, skipping insertion in model container [2024-11-08 10:28:36,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:28:36" (3/3) ... [2024-11-08 10:28:36,878 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label00.c [2024-11-08 10:28:36,895 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:28:36,895 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:28:36,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:28:36,973 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;@4c3af0ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:28:36,974 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:28:36,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-08 10:28:37,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:37,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:37,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:37,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1538492478, now seen corresponding path program 1 times [2024-11-08 10:28:37,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:37,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076913899] [2024-11-08 10:28:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:37,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:37,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:37,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076913899] [2024-11-08 10:28:37,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076913899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:37,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:37,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:28:38,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129331939] [2024-11-08 10:28:38,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:38,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:38,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:38,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:38,044 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 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) [2024-11-08 10:28:39,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:39,242 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2024-11-08 10:28:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:39,245 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 192 [2024-11-08 10:28:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:39,268 INFO L225 Difference]: With dead ends: 857 [2024-11-08 10:28:39,269 INFO L226 Difference]: Without dead ends: 462 [2024-11-08 10:28:39,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:39,280 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 96 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:39,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 187 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 10:28:39,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-08 10:28:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2024-11-08 10:28:39,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2024-11-08 10:28:39,356 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 192 [2024-11-08 10:28:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:39,357 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2024-11-08 10:28:39,358 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) [2024-11-08 10:28:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2024-11-08 10:28:39,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-08 10:28:39,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:39,364 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:39,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:28:39,365 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:39,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1163580769, now seen corresponding path program 1 times [2024-11-08 10:28:39,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:39,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615069149] [2024-11-08 10:28:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:39,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:39,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:39,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615069149] [2024-11-08 10:28:39,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615069149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:39,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:39,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:28:39,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283736340] [2024-11-08 10:28:39,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:39,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:39,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:39,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:39,627 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:40,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:40,395 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2024-11-08 10:28:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:40,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2024-11-08 10:28:40,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:40,402 INFO L225 Difference]: With dead ends: 1344 [2024-11-08 10:28:40,402 INFO L226 Difference]: Without dead ends: 886 [2024-11-08 10:28:40,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:40,405 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 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 [2024-11-08 10:28:40,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:28:40,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-08 10:28:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2024-11-08 10:28:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5132336018411967) internal successors, (1315), 869 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1315 transitions. [2024-11-08 10:28:40,447 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1315 transitions. Word has length 200 [2024-11-08 10:28:40,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:40,451 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1315 transitions. [2024-11-08 10:28:40,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1315 transitions. [2024-11-08 10:28:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-08 10:28:40,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:40,460 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:40,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:28:40,461 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:40,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash 764508428, now seen corresponding path program 1 times [2024-11-08 10:28:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:40,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790025359] [2024-11-08 10:28:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:40,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:28:41,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:41,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790025359] [2024-11-08 10:28:41,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790025359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:41,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:41,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:28:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540493351] [2024-11-08 10:28:41,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:41,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:28:41,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:28:41,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:28:41,266 INFO L87 Difference]: Start difference. First operand 870 states and 1315 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:42,276 INFO L93 Difference]: Finished difference Result 1884 states and 2886 transitions. [2024-11-08 10:28:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:28:42,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 207 [2024-11-08 10:28:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:42,281 INFO L225 Difference]: With dead ends: 1884 [2024-11-08 10:28:42,281 INFO L226 Difference]: Without dead ends: 842 [2024-11-08 10:28:42,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:28:42,285 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 299 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:42,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 47 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 10:28:42,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-11-08 10:28:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 842. [2024-11-08 10:28:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 1.3650416171224733) internal successors, (1148), 841 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1148 transitions. [2024-11-08 10:28:42,315 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1148 transitions. Word has length 207 [2024-11-08 10:28:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:42,316 INFO L471 AbstractCegarLoop]: Abstraction has 842 states and 1148 transitions. [2024-11-08 10:28:42,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:42,317 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1148 transitions. [2024-11-08 10:28:42,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-08 10:28:42,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:42,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:42,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 10:28:42,322 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:42,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:42,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2105497947, now seen corresponding path program 1 times [2024-11-08 10:28:42,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:42,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890298557] [2024-11-08 10:28:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:42,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:42,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:42,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890298557] [2024-11-08 10:28:42,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890298557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:42,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:42,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:28:42,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970337555] [2024-11-08 10:28:42,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:42,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:42,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:42,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:42,567 INFO L87 Difference]: Start difference. First operand 842 states and 1148 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:43,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:43,260 INFO L93 Difference]: Finished difference Result 2504 states and 3420 transitions. [2024-11-08 10:28:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:43,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-08 10:28:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:43,267 INFO L225 Difference]: With dead ends: 2504 [2024-11-08 10:28:43,267 INFO L226 Difference]: Without dead ends: 1664 [2024-11-08 10:28:43,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:43,271 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 227 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:43,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 72 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:28:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2024-11-08 10:28:43,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1663. [2024-11-08 10:28:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 1.3243080625752106) internal successors, (2201), 1662 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2201 transitions. [2024-11-08 10:28:43,306 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2201 transitions. Word has length 215 [2024-11-08 10:28:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:43,306 INFO L471 AbstractCegarLoop]: Abstraction has 1663 states and 2201 transitions. [2024-11-08 10:28:43,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2201 transitions. [2024-11-08 10:28:43,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-08 10:28:43,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:43,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:43,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 10:28:43,312 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:43,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash -646286703, now seen corresponding path program 1 times [2024-11-08 10:28:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:43,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884285577] [2024-11-08 10:28:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:43,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884285577] [2024-11-08 10:28:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884285577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:44,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:44,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:28:44,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696276214] [2024-11-08 10:28:44,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:44,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:28:44,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:28:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:28:44,036 INFO L87 Difference]: Start difference. First operand 1663 states and 2201 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:45,213 INFO L93 Difference]: Finished difference Result 4323 states and 5738 transitions. [2024-11-08 10:28:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:28:45,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2024-11-08 10:28:45,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:45,222 INFO L225 Difference]: With dead ends: 4323 [2024-11-08 10:28:45,222 INFO L226 Difference]: Without dead ends: 2488 [2024-11-08 10:28:45,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:28:45,228 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 193 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:45,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 100 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 10:28:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2024-11-08 10:28:45,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2487. [2024-11-08 10:28:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2486 states have (on average 1.3073209975864843) internal successors, (3250), 2486 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3250 transitions. [2024-11-08 10:28:45,309 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3250 transitions. Word has length 223 [2024-11-08 10:28:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:45,310 INFO L471 AbstractCegarLoop]: Abstraction has 2487 states and 3250 transitions. [2024-11-08 10:28:45,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3250 transitions. [2024-11-08 10:28:45,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-08 10:28:45,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:45,316 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:45,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 10:28:45,316 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:45,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:45,317 INFO L85 PathProgramCache]: Analyzing trace with hash 628018412, now seen corresponding path program 1 times [2024-11-08 10:28:45,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:45,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347401821] [2024-11-08 10:28:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:45,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 10:28:45,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:45,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347401821] [2024-11-08 10:28:45,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347401821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:45,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:45,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:28:45,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843291837] [2024-11-08 10:28:45,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:45,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:45,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:45,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:45,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:45,568 INFO L87 Difference]: Start difference. First operand 2487 states and 3250 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:46,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:46,353 INFO L93 Difference]: Finished difference Result 6628 states and 8636 transitions. [2024-11-08 10:28:46,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:46,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 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 225 [2024-11-08 10:28:46,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:46,367 INFO L225 Difference]: With dead ends: 6628 [2024-11-08 10:28:46,368 INFO L226 Difference]: Without dead ends: 4143 [2024-11-08 10:28:46,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:46,372 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 202 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:46,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 117 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:28:46,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2024-11-08 10:28:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4140. [2024-11-08 10:28:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4140 states, 4139 states have (on average 1.296206813239913) internal successors, (5365), 4139 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 5365 transitions. [2024-11-08 10:28:46,472 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 5365 transitions. Word has length 225 [2024-11-08 10:28:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:46,472 INFO L471 AbstractCegarLoop]: Abstraction has 4140 states and 5365 transitions. [2024-11-08 10:28:46,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 5365 transitions. [2024-11-08 10:28:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-08 10:28:46,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:46,484 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:46,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 10:28:46,485 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:46,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1736892038, now seen corresponding path program 1 times [2024-11-08 10:28:46,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:46,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104078949] [2024-11-08 10:28:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:46,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:46,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:46,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104078949] [2024-11-08 10:28:46,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104078949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:28:46,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506167876] [2024-11-08 10:28:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:46,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:46,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:46,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:28:46,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:28:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:47,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:28:47,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:28:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 10:28:47,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:28:47,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506167876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:47,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:28:47,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:28:47,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337089617] [2024-11-08 10:28:47,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:47,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:47,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:47,468 INFO L87 Difference]: Start difference. First operand 4140 states and 5365 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:48,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:48,233 INFO L93 Difference]: Finished difference Result 8287 states and 10744 transitions. [2024-11-08 10:28:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:48,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2024-11-08 10:28:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:48,248 INFO L225 Difference]: With dead ends: 8287 [2024-11-08 10:28:48,248 INFO L226 Difference]: Without dead ends: 4149 [2024-11-08 10:28:48,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:48,255 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 32 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:48,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 320 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:28:48,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2024-11-08 10:28:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 4140. [2024-11-08 10:28:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4140 states, 4139 states have (on average 1.285817830393815) internal successors, (5322), 4139 states have internal predecessors, (5322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 5322 transitions. [2024-11-08 10:28:48,332 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 5322 transitions. Word has length 230 [2024-11-08 10:28:48,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:48,332 INFO L471 AbstractCegarLoop]: Abstraction has 4140 states and 5322 transitions. [2024-11-08 10:28:48,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:48,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 5322 transitions. [2024-11-08 10:28:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-08 10:28:48,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:48,341 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:48,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 10:28:48,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:48,543 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:48,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:48,544 INFO L85 PathProgramCache]: Analyzing trace with hash -753136406, now seen corresponding path program 1 times [2024-11-08 10:28:48,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:48,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688275169] [2024-11-08 10:28:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:48,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:28:48,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:48,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688275169] [2024-11-08 10:28:48,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688275169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:28:48,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648385222] [2024-11-08 10:28:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:48,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:48,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:48,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:28:48,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:28:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:49,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:28:49,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:28:49,185 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:28:49,185 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:28:49,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648385222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:49,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:28:49,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:28:49,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138409536] [2024-11-08 10:28:49,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:49,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:49,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:49,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:49,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:49,188 INFO L87 Difference]: Start difference. First operand 4140 states and 5322 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:49,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:49,970 INFO L93 Difference]: Finished difference Result 12344 states and 15868 transitions. [2024-11-08 10:28:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:49,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 236 [2024-11-08 10:28:49,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:49,999 INFO L225 Difference]: With dead ends: 12344 [2024-11-08 10:28:49,999 INFO L226 Difference]: Without dead ends: 8206 [2024-11-08 10:28:50,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:50,009 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 212 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:50,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 342 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:28:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8206 states. [2024-11-08 10:28:50,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8206 to 8200. [2024-11-08 10:28:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8199 states have (on average 1.17685083546774) internal successors, (9649), 8199 states have internal predecessors, (9649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 9649 transitions. [2024-11-08 10:28:50,176 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 9649 transitions. Word has length 236 [2024-11-08 10:28:50,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:50,176 INFO L471 AbstractCegarLoop]: Abstraction has 8200 states and 9649 transitions. [2024-11-08 10:28:50,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:50,177 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 9649 transitions. [2024-11-08 10:28:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-08 10:28:50,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:50,195 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:50,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 10:28:50,396 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,SelfDestructingSolverStorable7 [2024-11-08 10:28:50,397 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:50,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:50,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1192815722, now seen corresponding path program 1 times [2024-11-08 10:28:50,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:50,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279216015] [2024-11-08 10:28:50,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:50,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:28:50,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:50,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279216015] [2024-11-08 10:28:50,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279216015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:50,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:50,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:28:50,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259466183] [2024-11-08 10:28:50,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:50,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:50,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:50,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:50,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:50,683 INFO L87 Difference]: Start difference. First operand 8200 states and 9649 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:51,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:51,433 INFO L93 Difference]: Finished difference Result 20458 states and 24512 transitions. [2024-11-08 10:28:51,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:51,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 246 [2024-11-08 10:28:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:51,473 INFO L225 Difference]: With dead ends: 20458 [2024-11-08 10:28:51,474 INFO L226 Difference]: Without dead ends: 12260 [2024-11-08 10:28:51,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:51,489 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 210 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:51,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 127 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:28:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12260 states. [2024-11-08 10:28:51,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12260 to 12260. [2024-11-08 10:28:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12260 states, 12259 states have (on average 1.1418549637001387) internal successors, (13998), 12259 states have internal predecessors, (13998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12260 states to 12260 states and 13998 transitions. [2024-11-08 10:28:51,729 INFO L78 Accepts]: Start accepts. Automaton has 12260 states and 13998 transitions. Word has length 246 [2024-11-08 10:28:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:51,730 INFO L471 AbstractCegarLoop]: Abstraction has 12260 states and 13998 transitions. [2024-11-08 10:28:51,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 12260 states and 13998 transitions. [2024-11-08 10:28:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-08 10:28:51,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:51,748 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:51,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 10:28:51,749 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:51,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:51,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1411402772, now seen corresponding path program 1 times [2024-11-08 10:28:51,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596554459] [2024-11-08 10:28:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:51,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 10:28:52,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:52,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596554459] [2024-11-08 10:28:52,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596554459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:28:52,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071022355] [2024-11-08 10:28:52,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:52,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:52,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:52,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:28:52,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:28:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:52,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:28:52,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:28:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:28:52,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:28:52,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071022355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:52,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:28:52,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:28:52,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348075101] [2024-11-08 10:28:52,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:52,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:52,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:52,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:52,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:52,406 INFO L87 Difference]: Start difference. First operand 12260 states and 13998 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:53,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:53,088 INFO L93 Difference]: Finished difference Result 24519 states and 27996 transitions. [2024-11-08 10:28:53,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:53,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2024-11-08 10:28:53,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:53,111 INFO L225 Difference]: With dead ends: 24519 [2024-11-08 10:28:53,111 INFO L226 Difference]: Without dead ends: 12261 [2024-11-08 10:28:53,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:53,126 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 213 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:53,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 290 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:28:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12261 states. [2024-11-08 10:28:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12261 to 12255. [2024-11-08 10:28:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12255 states, 12254 states have (on average 1.109760078341766) internal successors, (13599), 12254 states have internal predecessors, (13599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12255 states to 12255 states and 13599 transitions. [2024-11-08 10:28:53,378 INFO L78 Accepts]: Start accepts. Automaton has 12255 states and 13599 transitions. Word has length 258 [2024-11-08 10:28:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:53,378 INFO L471 AbstractCegarLoop]: Abstraction has 12255 states and 13599 transitions. [2024-11-08 10:28:53,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12255 states and 13599 transitions. [2024-11-08 10:28:53,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-08 10:28:53,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:53,398 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:53,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 10:28:53,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:53,599 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:53,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:53,600 INFO L85 PathProgramCache]: Analyzing trace with hash -8085585, now seen corresponding path program 1 times [2024-11-08 10:28:53,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:53,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970087618] [2024-11-08 10:28:53,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:53,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 10:28:53,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:53,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970087618] [2024-11-08 10:28:53,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970087618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:53,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:53,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:28:53,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249103129] [2024-11-08 10:28:53,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:53,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:28:53,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:53,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:28:53,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:28:53,841 INFO L87 Difference]: Start difference. First operand 12255 states and 13599 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:54,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:54,659 INFO L93 Difference]: Finished difference Result 44440 states and 49044 transitions. [2024-11-08 10:28:54,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:28:54,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 264 [2024-11-08 10:28:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:54,722 INFO L225 Difference]: With dead ends: 44440 [2024-11-08 10:28:54,722 INFO L226 Difference]: Without dead ends: 32187 [2024-11-08 10:28:54,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:28:54,745 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 705 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:54,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 304 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:28:54,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32187 states. [2024-11-08 10:28:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32187 to 27086. [2024-11-08 10:28:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27086 states, 27085 states have (on average 1.0995754107439542) internal successors, (29782), 27085 states have internal predecessors, (29782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27086 states to 27086 states and 29782 transitions. [2024-11-08 10:28:55,138 INFO L78 Accepts]: Start accepts. Automaton has 27086 states and 29782 transitions. Word has length 264 [2024-11-08 10:28:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:55,138 INFO L471 AbstractCegarLoop]: Abstraction has 27086 states and 29782 transitions. [2024-11-08 10:28:55,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 27086 states and 29782 transitions. [2024-11-08 10:28:55,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-08 10:28:55,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:55,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:55,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 10:28:55,165 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:55,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash -52656185, now seen corresponding path program 1 times [2024-11-08 10:28:55,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:55,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788653901] [2024-11-08 10:28:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:55,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:55,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:55,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788653901] [2024-11-08 10:28:55,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788653901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:55,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:55,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:28:55,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459235084] [2024-11-08 10:28:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:55,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:55,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:55,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:55,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:55,482 INFO L87 Difference]: Start difference. First operand 27086 states and 29782 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:56,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:56,252 INFO L93 Difference]: Finished difference Result 72270 states and 79444 transitions. [2024-11-08 10:28:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:56,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 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 267 [2024-11-08 10:28:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:56,317 INFO L225 Difference]: With dead ends: 72270 [2024-11-08 10:28:56,317 INFO L226 Difference]: Without dead ends: 45186 [2024-11-08 10:28:56,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:56,354 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:56,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 126 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:28:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45186 states. [2024-11-08 10:28:56,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45186 to 32975. [2024-11-08 10:28:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32975 states, 32974 states have (on average 1.1053860617456177) internal successors, (36449), 32974 states have internal predecessors, (36449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32975 states to 32975 states and 36449 transitions. [2024-11-08 10:28:56,931 INFO L78 Accepts]: Start accepts. Automaton has 32975 states and 36449 transitions. Word has length 267 [2024-11-08 10:28:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:56,932 INFO L471 AbstractCegarLoop]: Abstraction has 32975 states and 36449 transitions. [2024-11-08 10:28:56,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:56,932 INFO L276 IsEmpty]: Start isEmpty. Operand 32975 states and 36449 transitions. [2024-11-08 10:28:56,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-08 10:28:56,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:56,959 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, 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] [2024-11-08 10:28:56,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 10:28:56,960 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:56,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:56,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1803840471, now seen corresponding path program 1 times [2024-11-08 10:28:56,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:56,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486929848] [2024-11-08 10:28:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:56,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:57,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486929848] [2024-11-08 10:28:57,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486929848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:57,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:57,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:28:57,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257712229] [2024-11-08 10:28:57,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:57,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:57,254 INFO L87 Difference]: Start difference. First operand 32975 states and 36449 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:57,983 INFO L93 Difference]: Finished difference Result 65753 states and 72697 transitions. [2024-11-08 10:28:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:57,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 [2024-11-08 10:28:57,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:58,117 INFO L225 Difference]: With dead ends: 65753 [2024-11-08 10:28:58,117 INFO L226 Difference]: Without dead ends: 32983 [2024-11-08 10:28:58,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:58,137 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 72 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:58,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 277 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:28:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32983 states. [2024-11-08 10:28:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32983 to 32569. [2024-11-08 10:28:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32569 states, 32568 states have (on average 1.0988086465241955) internal successors, (35786), 32568 states have internal predecessors, (35786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32569 states to 32569 states and 35786 transitions. [2024-11-08 10:28:58,595 INFO L78 Accepts]: Start accepts. Automaton has 32569 states and 35786 transitions. Word has length 288 [2024-11-08 10:28:58,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:58,596 INFO L471 AbstractCegarLoop]: Abstraction has 32569 states and 35786 transitions. [2024-11-08 10:28:58,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:28:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 32569 states and 35786 transitions. [2024-11-08 10:28:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-08 10:28:58,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:58,753 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:58,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 10:28:58,753 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:58,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1499642589, now seen corresponding path program 1 times [2024-11-08 10:28:58,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:58,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517273892] [2024-11-08 10:28:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:58,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 108 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-08 10:28:59,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517273892] [2024-11-08 10:28:59,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517273892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:28:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425362718] [2024-11-08 10:28:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:59,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:59,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:59,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:28:59,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:28:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:59,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:28:59,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:28:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 10:28:59,455 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:28:59,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425362718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:59,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:28:59,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:28:59,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036568957] [2024-11-08 10:28:59,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:59,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:59,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:59,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:59,457 INFO L87 Difference]: Start difference. First operand 32569 states and 35786 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:00,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:00,171 INFO L93 Difference]: Finished difference Result 80995 states and 88878 transitions. [2024-11-08 10:29:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:00,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 292 [2024-11-08 10:29:00,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:00,230 INFO L225 Difference]: With dead ends: 80995 [2024-11-08 10:29:00,230 INFO L226 Difference]: Without dead ends: 48631 [2024-11-08 10:29:00,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:00,265 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 201 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:00,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 310 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:29:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48631 states. [2024-11-08 10:29:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48631 to 46791. [2024-11-08 10:29:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46791 states, 46790 states have (on average 1.0908527463133149) internal successors, (51041), 46790 states have internal predecessors, (51041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46791 states to 46791 states and 51041 transitions. [2024-11-08 10:29:01,021 INFO L78 Accepts]: Start accepts. Automaton has 46791 states and 51041 transitions. Word has length 292 [2024-11-08 10:29:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:01,022 INFO L471 AbstractCegarLoop]: Abstraction has 46791 states and 51041 transitions. [2024-11-08 10:29:01,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 46791 states and 51041 transitions. [2024-11-08 10:29:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-08 10:29:01,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:01,064 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 10:29:01,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 10:29:01,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:01,265 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:01,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:01,265 INFO L85 PathProgramCache]: Analyzing trace with hash -727034578, now seen corresponding path program 1 times [2024-11-08 10:29:01,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:01,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727013034] [2024-11-08 10:29:01,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:01,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:29:01,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:01,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727013034] [2024-11-08 10:29:01,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727013034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:01,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:01,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:29:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910828827] [2024-11-08 10:29:01,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:01,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:29:01,778 INFO L87 Difference]: Start difference. First operand 46791 states and 51041 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:02,631 INFO L93 Difference]: Finished difference Result 118422 states and 129185 transitions. [2024-11-08 10:29:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:02,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 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 307 [2024-11-08 10:29:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:02,720 INFO L225 Difference]: With dead ends: 118422 [2024-11-08 10:29:02,720 INFO L226 Difference]: Without dead ends: 71836 [2024-11-08 10:29:02,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:29:02,744 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 118 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:02,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 72 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:29:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71836 states. [2024-11-08 10:29:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71836 to 64321. [2024-11-08 10:29:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64321 states, 64320 states have (on average 1.0968439054726369) internal successors, (70549), 64320 states have internal predecessors, (70549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64321 states to 64321 states and 70549 transitions. [2024-11-08 10:29:03,798 INFO L78 Accepts]: Start accepts. Automaton has 64321 states and 70549 transitions. Word has length 307 [2024-11-08 10:29:03,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:03,798 INFO L471 AbstractCegarLoop]: Abstraction has 64321 states and 70549 transitions. [2024-11-08 10:29:03,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 64321 states and 70549 transitions. [2024-11-08 10:29:03,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-08 10:29:03,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:03,839 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-08 10:29:03,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 10:29:03,840 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:03,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:03,840 INFO L85 PathProgramCache]: Analyzing trace with hash 899003850, now seen corresponding path program 1 times [2024-11-08 10:29:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:03,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743974701] [2024-11-08 10:29:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:03,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 108 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-08 10:29:04,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:04,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743974701] [2024-11-08 10:29:04,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743974701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:29:04,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38965536] [2024-11-08 10:29:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:04,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:04,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:29:04,399 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:29:04,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:29:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:04,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:29:04,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:29:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 10:29:04,845 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:29:04,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38965536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:04,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:29:04,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:29:04,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004283730] [2024-11-08 10:29:04,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:04,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:04,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:04,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:04,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:04,847 INFO L87 Difference]: Start difference. First operand 64321 states and 70549 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:05,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:05,567 INFO L93 Difference]: Finished difference Result 127025 states and 139136 transitions. [2024-11-08 10:29:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:05,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 312 [2024-11-08 10:29:05,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:05,661 INFO L225 Difference]: With dead ends: 127025 [2024-11-08 10:29:05,661 INFO L226 Difference]: Without dead ends: 62909 [2024-11-08 10:29:05,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:05,704 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 65 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:05,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 98 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:29:05,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62909 states. [2024-11-08 10:29:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62909 to 59435. [2024-11-08 10:29:06,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59435 states, 59434 states have (on average 1.077228522394589) internal successors, (64024), 59434 states have internal predecessors, (64024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59435 states to 59435 states and 64024 transitions. [2024-11-08 10:29:06,976 INFO L78 Accepts]: Start accepts. Automaton has 59435 states and 64024 transitions. Word has length 312 [2024-11-08 10:29:06,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:06,976 INFO L471 AbstractCegarLoop]: Abstraction has 59435 states and 64024 transitions. [2024-11-08 10:29:06,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:06,977 INFO L276 IsEmpty]: Start isEmpty. Operand 59435 states and 64024 transitions. [2024-11-08 10:29:07,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-08 10:29:07,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:07,004 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 10:29:07,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 10:29:07,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 10:29:07,205 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:07,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:07,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2110770681, now seen corresponding path program 1 times [2024-11-08 10:29:07,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:07,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86133137] [2024-11-08 10:29:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:07,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:29:07,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:07,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86133137] [2024-11-08 10:29:07,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86133137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:07,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:07,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:29:07,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878728787] [2024-11-08 10:29:07,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:07,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 10:29:07,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:07,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 10:29:07,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:07,863 INFO L87 Difference]: Start difference. First operand 59435 states and 64024 transitions. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:09,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:09,027 INFO L93 Difference]: Finished difference Result 121192 states and 130538 transitions. [2024-11-08 10:29:09,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 10:29:09,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2024-11-08 10:29:09,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:09,110 INFO L225 Difference]: With dead ends: 121192 [2024-11-08 10:29:09,110 INFO L226 Difference]: Without dead ends: 61266 [2024-11-08 10:29:09,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:09,150 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 403 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:09,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 71 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 10:29:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61266 states. [2024-11-08 10:29:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61266 to 61262. [2024-11-08 10:29:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61262 states, 61261 states have (on average 1.0748926723363967) internal successors, (65849), 61261 states have internal predecessors, (65849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61262 states to 61262 states and 65849 transitions. [2024-11-08 10:29:10,156 INFO L78 Accepts]: Start accepts. Automaton has 61262 states and 65849 transitions. Word has length 312 [2024-11-08 10:29:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:10,157 INFO L471 AbstractCegarLoop]: Abstraction has 61262 states and 65849 transitions. [2024-11-08 10:29:10,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 61262 states and 65849 transitions. [2024-11-08 10:29:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-08 10:29:10,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:10,190 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:10,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 10:29:10,191 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:10,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1539312803, now seen corresponding path program 1 times [2024-11-08 10:29:10,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:10,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577957086] [2024-11-08 10:29:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:10,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:29:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:10,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577957086] [2024-11-08 10:29:10,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577957086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:10,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:10,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:29:10,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392523836] [2024-11-08 10:29:10,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:10,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:29:10,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:10,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:29:10,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:29:10,537 INFO L87 Difference]: Start difference. First operand 61262 states and 65849 transitions. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:11,835 INFO L93 Difference]: Finished difference Result 168909 states and 181801 transitions. [2024-11-08 10:29:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:29:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 314 [2024-11-08 10:29:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:11,974 INFO L225 Difference]: With dead ends: 168909 [2024-11-08 10:29:11,974 INFO L226 Difference]: Without dead ends: 107852 [2024-11-08 10:29:12,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:29:12,022 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 511 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:12,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 316 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:29:12,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107852 states. [2024-11-08 10:29:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107852 to 92370. [2024-11-08 10:29:13,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92370 states, 92369 states have (on average 1.0735203369095692) internal successors, (99160), 92369 states have internal predecessors, (99160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92370 states to 92370 states and 99160 transitions. [2024-11-08 10:29:13,795 INFO L78 Accepts]: Start accepts. Automaton has 92370 states and 99160 transitions. Word has length 314 [2024-11-08 10:29:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:13,798 INFO L471 AbstractCegarLoop]: Abstraction has 92370 states and 99160 transitions. [2024-11-08 10:29:13,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 92370 states and 99160 transitions. [2024-11-08 10:29:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-08 10:29:13,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:13,827 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 10:29:13,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 10:29:13,827 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:13,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1040792816, now seen corresponding path program 1 times [2024-11-08 10:29:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:13,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070706056] [2024-11-08 10:29:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 108 proven. 6 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-08 10:29:14,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:14,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070706056] [2024-11-08 10:29:14,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070706056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:29:14,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042070884] [2024-11-08 10:29:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:14,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:14,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:29:14,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:29:14,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:29:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:14,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:29:14,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:29:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-08 10:29:14,694 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:29:14,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042070884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:14,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:29:14,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:29:14,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577078969] [2024-11-08 10:29:14,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:14,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:14,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:14,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:14,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:14,700 INFO L87 Difference]: Start difference. First operand 92370 states and 99160 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:15,375 INFO L93 Difference]: Finished difference Result 176620 states and 189770 transitions. [2024-11-08 10:29:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:15,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 343 [2024-11-08 10:29:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:15,487 INFO L225 Difference]: With dead ends: 176620 [2024-11-08 10:29:15,487 INFO L226 Difference]: Without dead ends: 84252 [2024-11-08 10:29:15,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:15,553 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 254 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:15,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 776 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:29:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84252 states. [2024-11-08 10:29:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84252 to 82829. [2024-11-08 10:29:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82829 states, 82828 states have (on average 1.0703988989230695) internal successors, (88659), 82828 states have internal predecessors, (88659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82829 states to 82829 states and 88659 transitions. [2024-11-08 10:29:16,957 INFO L78 Accepts]: Start accepts. Automaton has 82829 states and 88659 transitions. Word has length 343 [2024-11-08 10:29:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:16,957 INFO L471 AbstractCegarLoop]: Abstraction has 82829 states and 88659 transitions. [2024-11-08 10:29:16,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 82829 states and 88659 transitions. [2024-11-08 10:29:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-08 10:29:16,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:16,989 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 10:29:17,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 10:29:17,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:17,190 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:17,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:17,190 INFO L85 PathProgramCache]: Analyzing trace with hash 143874072, now seen corresponding path program 1 times [2024-11-08 10:29:17,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:17,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356341543] [2024-11-08 10:29:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:17,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:29:17,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:17,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356341543] [2024-11-08 10:29:17,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356341543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:17,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:17,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:29:17,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660503434] [2024-11-08 10:29:17,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:17,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:29:17,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:17,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:29:17,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:29:17,859 INFO L87 Difference]: Start difference. First operand 82829 states and 88659 transitions. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:18,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:18,957 INFO L93 Difference]: Finished difference Result 212240 states and 227280 transitions. [2024-11-08 10:29:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:29:18,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 350 [2024-11-08 10:29:18,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:19,123 INFO L225 Difference]: With dead ends: 212240 [2024-11-08 10:29:19,123 INFO L226 Difference]: Without dead ends: 129413 [2024-11-08 10:29:19,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:29:19,546 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 526 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:19,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 272 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:29:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129413 states. [2024-11-08 10:29:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129413 to 98660. [2024-11-08 10:29:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98660 states, 98659 states have (on average 1.0709210512979048) internal successors, (105656), 98659 states have internal predecessors, (105656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:21,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98660 states to 98660 states and 105656 transitions. [2024-11-08 10:29:21,201 INFO L78 Accepts]: Start accepts. Automaton has 98660 states and 105656 transitions. Word has length 350 [2024-11-08 10:29:21,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:21,202 INFO L471 AbstractCegarLoop]: Abstraction has 98660 states and 105656 transitions. [2024-11-08 10:29:21,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 98660 states and 105656 transitions. [2024-11-08 10:29:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-08 10:29:21,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:21,240 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 10:29:21,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 10:29:21,240 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:21,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1500452495, now seen corresponding path program 1 times [2024-11-08 10:29:21,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:21,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431715431] [2024-11-08 10:29:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:21,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 182 proven. 11 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 10:29:22,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:22,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431715431] [2024-11-08 10:29:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431715431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:29:22,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644224584] [2024-11-08 10:29:22,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:22,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:22,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:29:22,161 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:29:22,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:29:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:22,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:29:22,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:29:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 10:29:22,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:29:22,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644224584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:22,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:29:22,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:29:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496456674] [2024-11-08 10:29:22,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:22,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:22,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:22,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:22,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:22,395 INFO L87 Difference]: Start difference. First operand 98660 states and 105656 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:23,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:23,543 INFO L93 Difference]: Finished difference Result 272342 states and 291789 transitions. [2024-11-08 10:29:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:23,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 364 [2024-11-08 10:29:23,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:23,786 INFO L225 Difference]: With dead ends: 272342 [2024-11-08 10:29:23,786 INFO L226 Difference]: Without dead ends: 173684 [2024-11-08 10:29:23,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:23,820 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 215 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:23,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 738 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:29:23,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173684 states. [2024-11-08 10:29:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173684 to 172055. [2024-11-08 10:29:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172055 states, 172054 states have (on average 1.0660025340881352) internal successors, (183410), 172054 states have internal predecessors, (183410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172055 states to 172055 states and 183410 transitions. [2024-11-08 10:29:26,508 INFO L78 Accepts]: Start accepts. Automaton has 172055 states and 183410 transitions. Word has length 364 [2024-11-08 10:29:26,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:26,509 INFO L471 AbstractCegarLoop]: Abstraction has 172055 states and 183410 transitions. [2024-11-08 10:29:26,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:26,509 INFO L276 IsEmpty]: Start isEmpty. Operand 172055 states and 183410 transitions. [2024-11-08 10:29:26,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-08 10:29:26,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:26,562 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 10:29:26,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 10:29:26,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:26,763 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:26,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1953573887, now seen corresponding path program 1 times [2024-11-08 10:29:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:26,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643891878] [2024-11-08 10:29:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:29:27,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:27,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643891878] [2024-11-08 10:29:27,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643891878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:27,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:27,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:29:27,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065456886] [2024-11-08 10:29:27,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:27,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 10:29:27,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:27,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 10:29:27,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:27,903 INFO L87 Difference]: Start difference. First operand 172055 states and 183410 transitions. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:29,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:29,885 INFO L93 Difference]: Finished difference Result 352791 states and 375935 transitions. [2024-11-08 10:29:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 10:29:29,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2024-11-08 10:29:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:30,153 INFO L225 Difference]: With dead ends: 352791 [2024-11-08 10:29:30,153 INFO L226 Difference]: Without dead ends: 178969 [2024-11-08 10:29:30,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:30,249 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 335 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:30,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 74 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 10:29:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178969 states. [2024-11-08 10:29:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178969 to 176115. [2024-11-08 10:29:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176115 states, 176114 states have (on average 1.0633396549961955) internal successors, (187269), 176114 states have internal predecessors, (187269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176115 states to 176115 states and 187269 transitions. [2024-11-08 10:29:33,205 INFO L78 Accepts]: Start accepts. Automaton has 176115 states and 187269 transitions. Word has length 373 [2024-11-08 10:29:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:33,205 INFO L471 AbstractCegarLoop]: Abstraction has 176115 states and 187269 transitions. [2024-11-08 10:29:33,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 176115 states and 187269 transitions. [2024-11-08 10:29:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-08 10:29:33,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:33,260 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:33,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 10:29:33,260 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:33,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1400611527, now seen corresponding path program 1 times [2024-11-08 10:29:33,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:33,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377959897] [2024-11-08 10:29:33,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:33,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 84 proven. 6 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-08 10:29:34,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:34,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377959897] [2024-11-08 10:29:34,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377959897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:29:34,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049436089] [2024-11-08 10:29:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:34,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:34,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:29:34,148 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:29:34,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:29:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:34,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:29:34,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:29:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 10:29:34,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:29:34,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049436089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:34,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:29:34,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:29:34,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032496482] [2024-11-08 10:29:34,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:34,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:34,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:34,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:34,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:34,589 INFO L87 Difference]: Start difference. First operand 176115 states and 187269 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:36,310 INFO L93 Difference]: Finished difference Result 372178 states and 395641 transitions. [2024-11-08 10:29:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:36,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 376 [2024-11-08 10:29:36,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:36,597 INFO L225 Difference]: With dead ends: 372178 [2024-11-08 10:29:36,598 INFO L226 Difference]: Without dead ends: 196065 [2024-11-08 10:29:36,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:36,706 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 38 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:36,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 308 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:29:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196065 states. [2024-11-08 10:29:39,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196065 to 173052. [2024-11-08 10:29:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173052 states, 173051 states have (on average 1.06079132741215) internal successors, (183571), 173051 states have internal predecessors, (183571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)