./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label20.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/Problem13_label20.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 c33ca3c6d8158368e2a1c112df44a3cf58b94be2237d2503e259747e7fb3b47e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:20:34,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:20:34,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:20:34,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:20:34,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:20:34,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:20:34,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:20:34,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:20:34,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:20:34,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:20:34,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:20:34,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:20:34,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:20:34,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:20:34,851 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:20:34,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:20:34,852 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:20:34,852 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:20:34,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:20:34,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:20:34,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:20:34,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:20:34,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:20:34,858 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:20:34,858 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:20:34,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:20:34,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:20:34,859 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:20:34,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:20:34,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:20:34,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:20:34,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:20:34,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:20:34,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:20:34,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:20:34,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:20:34,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:20:34,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:20:34,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:20:34,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:20:34,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:20:34,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:20:34,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c33ca3c6d8158368e2a1c112df44a3cf58b94be2237d2503e259747e7fb3b47e [2024-11-08 11:20:35,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:20:35,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:20:35,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:20:35,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:20:35,140 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:20:35,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label20.c [2024-11-08 11:20:36,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:20:36,938 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:20:36,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label20.c [2024-11-08 11:20:36,974 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409367129/6b1afd5f0bbe46d1b58f42b2c9307e75/FLAGc4e2089c9 [2024-11-08 11:20:37,085 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409367129/6b1afd5f0bbe46d1b58f42b2c9307e75 [2024-11-08 11:20:37,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:20:37,089 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:20:37,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:20:37,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:20:37,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:20:37,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:20:37" (1/1) ... [2024-11-08 11:20:37,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183c6bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:37, skipping insertion in model container [2024-11-08 11:20:37,100 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:20:37" (1/1) ... [2024-11-08 11:20:37,218 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:20:37,559 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/Problem13_label20.c[7839,7852] [2024-11-08 11:20:38,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:20:38,421 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:20:38,444 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/Problem13_label20.c[7839,7852] [2024-11-08 11:20:38,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:20:38,900 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:20:38,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38 WrapperNode [2024-11-08 11:20:38,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:20:38,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:20:38,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:20:38,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:20:38,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:38,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:39,562 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-11-08 11:20:39,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:20:39,564 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:20:39,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:20:39,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:20:39,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:39,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:39,713 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:39,942 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 11:20:39,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:39,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:40,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:40,166 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:40,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:40,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:40,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:20:40,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:20:40,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:20:40,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:20:40,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (1/1) ... [2024-11-08 11:20:40,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:20:40,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:20:40,317 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 11:20:40,319 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 11:20:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:20:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:20:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:20:40,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:20:40,420 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:20:40,422 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:20:46,135 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-08 11:20:46,136 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:20:46,182 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:20:46,182 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:20:46,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:20:46 BoogieIcfgContainer [2024-11-08 11:20:46,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:20:46,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:20:46,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:20:46,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:20:46,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:20:37" (1/3) ... [2024-11-08 11:20:46,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2901c094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:20:46, skipping insertion in model container [2024-11-08 11:20:46,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:38" (2/3) ... [2024-11-08 11:20:46,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2901c094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:20:46, skipping insertion in model container [2024-11-08 11:20:46,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:20:46" (3/3) ... [2024-11-08 11:20:46,193 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label20.c [2024-11-08 11:20:46,210 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:20:46,210 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:20:46,309 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:20:46,315 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;@2121623a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:20:46,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:20:46,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 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 11:20:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 11:20:46,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:46,332 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] [2024-11-08 11:20:46,333 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:46,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:46,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1246856209, now seen corresponding path program 1 times [2024-11-08 11:20:46,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:46,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276932479] [2024-11-08 11:20:46,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:46,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:46,770 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 11:20:46,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276932479] [2024-11-08 11:20:46,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276932479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:46,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:46,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:20:46,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120135492] [2024-11-08 11:20:46,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:46,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:46,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:46,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:46,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:46,807 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 11:20:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:50,654 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2024-11-08 11:20:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:20:50,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-08 11:20:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:50,692 INFO L225 Difference]: With dead ends: 3082 [2024-11-08 11:20:50,693 INFO L226 Difference]: Without dead ends: 1899 [2024-11-08 11:20:50,702 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 11:20:50,705 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 984 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:50,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-08 11:20:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-08 11:20:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2024-11-08 11:20:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 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 11:20:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2024-11-08 11:20:50,854 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 55 [2024-11-08 11:20:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:50,855 INFO L471 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2024-11-08 11:20:50,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 11:20:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2024-11-08 11:20:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-08 11:20:50,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:50,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:20:50,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:20:50,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:50,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash 11423466, now seen corresponding path program 1 times [2024-11-08 11:20:50,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:50,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261347343] [2024-11-08 11:20:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:50,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:20:51,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:51,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261347343] [2024-11-08 11:20:51,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261347343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:51,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:51,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:20:51,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645245535] [2024-11-08 11:20:51,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:51,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:51,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:51,217 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 11:20:54,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:54,876 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2024-11-08 11:20:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:20:54,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2024-11-08 11:20:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:54,890 INFO L225 Difference]: With dead ends: 5384 [2024-11-08 11:20:54,891 INFO L226 Difference]: Without dead ends: 3492 [2024-11-08 11:20:54,894 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 11:20:54,896 INFO L432 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:54,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-08 11:20:54,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2024-11-08 11:20:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2024-11-08 11:20:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 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 11:20:54,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2024-11-08 11:20:54,961 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 120 [2024-11-08 11:20:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:54,961 INFO L471 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2024-11-08 11:20:54,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 11:20:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2024-11-08 11:20:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-08 11:20:54,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:54,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:20:54,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:20:54,966 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:54,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1726181937, now seen corresponding path program 1 times [2024-11-08 11:20:54,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:54,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244007897] [2024-11-08 11:20:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:54,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:20:55,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:55,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244007897] [2024-11-08 11:20:55,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244007897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:55,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:55,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:20:55,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131169014] [2024-11-08 11:20:55,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:55,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:55,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:55,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:55,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:55,140 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 11:20:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:58,311 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2024-11-08 11:20:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:20:58,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2024-11-08 11:20:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:58,335 INFO L225 Difference]: With dead ends: 10169 [2024-11-08 11:20:58,335 INFO L226 Difference]: Without dead ends: 6680 [2024-11-08 11:20:58,341 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 11:20:58,342 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:58,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 11:20:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2024-11-08 11:20:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2024-11-08 11:20:58,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 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 11:20:58,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2024-11-08 11:20:58,488 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 122 [2024-11-08 11:20:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:58,489 INFO L471 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2024-11-08 11:20:58,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 11:20:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2024-11-08 11:20:58,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-08 11:20:58,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:58,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:58,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:20:58,494 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:58,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2017780899, now seen corresponding path program 1 times [2024-11-08 11:20:58,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:58,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546773479] [2024-11-08 11:20:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:58,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:20:58,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:58,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546773479] [2024-11-08 11:20:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546773479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:58,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:58,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:20:58,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047712881] [2024-11-08 11:20:58,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:58,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:58,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:58,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:58,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:58,963 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 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 11:21:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:01,385 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2024-11-08 11:21:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:01,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2024-11-08 11:21:01,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:01,402 INFO L225 Difference]: With dead ends: 14123 [2024-11-08 11:21:01,403 INFO L226 Difference]: Without dead ends: 7456 [2024-11-08 11:21:01,411 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 11:21:01,412 INFO L432 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:01,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 11:21:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2024-11-08 11:21:01,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2024-11-08 11:21:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 0 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 11:21:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2024-11-08 11:21:01,539 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 166 [2024-11-08 11:21:01,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:01,540 INFO L471 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2024-11-08 11:21:01,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 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 11:21:01,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2024-11-08 11:21:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-08 11:21:01,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:01,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:01,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 11:21:01,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:01,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1223344377, now seen corresponding path program 1 times [2024-11-08 11:21:01,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:01,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080317805] [2024-11-08 11:21:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:01,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:21:01,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:01,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080317805] [2024-11-08 11:21:01,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080317805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:01,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:21:01,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:21:01,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551145759] [2024-11-08 11:21:01,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:01,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:01,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:01,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:21:01,787 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:04,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:04,820 INFO L93 Difference]: Finished difference Result 20416 states and 27798 transitions. [2024-11-08 11:21:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:04,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-11-08 11:21:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:04,856 INFO L225 Difference]: With dead ends: 20416 [2024-11-08 11:21:04,856 INFO L226 Difference]: Without dead ends: 13749 [2024-11-08 11:21:04,867 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 11:21:04,869 INFO L432 NwaCegarLoop]: 1862 mSDtfsCounter, 879 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:04,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 2002 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 11:21:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13749 states. [2024-11-08 11:21:05,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13749 to 13744. [2024-11-08 11:21:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13744 states, 13743 states have (on average 1.2572946227170196) internal successors, (17279), 13743 states have internal predecessors, (17279), 0 states have call successors, (0), 0 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 11:21:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13744 states to 13744 states and 17279 transitions. [2024-11-08 11:21:05,080 INFO L78 Accepts]: Start accepts. Automaton has 13744 states and 17279 transitions. Word has length 180 [2024-11-08 11:21:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:05,081 INFO L471 AbstractCegarLoop]: Abstraction has 13744 states and 17279 transitions. [2024-11-08 11:21:05,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13744 states and 17279 transitions. [2024-11-08 11:21:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-08 11:21:05,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:05,086 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:21:05,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:21:05,087 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:05,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:05,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1393067190, now seen corresponding path program 1 times [2024-11-08 11:21:05,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:05,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809267516] [2024-11-08 11:21:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:05,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-08 11:21:05,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:05,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809267516] [2024-11-08 11:21:05,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809267516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:05,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:21:05,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:21:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372755274] [2024-11-08 11:21:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:05,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:05,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:05,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:05,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:21:05,502 INFO L87 Difference]: Start difference. First operand 13744 states and 17279 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 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 11:21:08,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:08,570 INFO L93 Difference]: Finished difference Result 23552 states and 30332 transitions. [2024-11-08 11:21:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:08,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 11:21:08,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:08,603 INFO L225 Difference]: With dead ends: 23552 [2024-11-08 11:21:08,604 INFO L226 Difference]: Without dead ends: 12966 [2024-11-08 11:21:08,617 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 11:21:08,618 INFO L432 NwaCegarLoop]: 1010 mSDtfsCounter, 726 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:08,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1189 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 11:21:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2024-11-08 11:21:08,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 12957. [2024-11-08 11:21:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12957 states, 12956 states have (on average 1.2713028712565606) internal successors, (16471), 12956 states have internal predecessors, (16471), 0 states have call successors, (0), 0 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 11:21:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 16471 transitions. [2024-11-08 11:21:08,790 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 16471 transitions. Word has length 267 [2024-11-08 11:21:08,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:08,791 INFO L471 AbstractCegarLoop]: Abstraction has 12957 states and 16471 transitions. [2024-11-08 11:21:08,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 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 11:21:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 16471 transitions. [2024-11-08 11:21:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-08 11:21:08,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:08,798 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:21:08,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:21:08,798 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:08,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:08,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1586820096, now seen corresponding path program 1 times [2024-11-08 11:21:08,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:08,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943876034] [2024-11-08 11:21:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:08,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-08 11:21:09,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:09,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943876034] [2024-11-08 11:21:09,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943876034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:09,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:21:09,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:21:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026965281] [2024-11-08 11:21:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:09,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:09,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:21:09,020 INFO L87 Difference]: Start difference. First operand 12957 states and 16471 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 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 11:21:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:12,361 INFO L93 Difference]: Finished difference Result 36153 states and 46429 transitions. [2024-11-08 11:21:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:12,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-11-08 11:21:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:12,398 INFO L225 Difference]: With dead ends: 36153 [2024-11-08 11:21:12,398 INFO L226 Difference]: Without dead ends: 23985 [2024-11-08 11:21:12,412 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 11:21:12,415 INFO L432 NwaCegarLoop]: 774 mSDtfsCounter, 890 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:12,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 891 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 11:21:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23985 states. [2024-11-08 11:21:12,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23985 to 23189. [2024-11-08 11:21:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23189 states, 23188 states have (on average 1.2129549767120924) internal successors, (28126), 23188 states have internal predecessors, (28126), 0 states have call successors, (0), 0 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 11:21:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23189 states to 23189 states and 28126 transitions. [2024-11-08 11:21:12,694 INFO L78 Accepts]: Start accepts. Automaton has 23189 states and 28126 transitions. Word has length 291 [2024-11-08 11:21:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:12,694 INFO L471 AbstractCegarLoop]: Abstraction has 23189 states and 28126 transitions. [2024-11-08 11:21:12,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 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 11:21:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 23189 states and 28126 transitions. [2024-11-08 11:21:12,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-08 11:21:12,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:12,700 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:21:12,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:21:12,700 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:12,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:12,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1534602178, now seen corresponding path program 1 times [2024-11-08 11:21:12,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:12,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015043884] [2024-11-08 11:21:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 105 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:21:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015043884] [2024-11-08 11:21:14,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015043884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:21:14,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422555826] [2024-11-08 11:21:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:14,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:21:14,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:21:14,121 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 11:21:14,123 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 11:21:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:14,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:21:14,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:21:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-08 11:21:14,432 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:21:14,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422555826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:14,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:21:14,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-08 11:21:14,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567235382] [2024-11-08 11:21:14,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:14,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:14,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:14,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:14,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:21:14,436 INFO L87 Difference]: Start difference. First operand 23189 states and 28126 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:17,026 INFO L93 Difference]: Finished difference Result 45587 states and 55457 transitions. [2024-11-08 11:21:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:17,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2024-11-08 11:21:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:17,069 INFO L225 Difference]: With dead ends: 45587 [2024-11-08 11:21:17,070 INFO L226 Difference]: Without dead ends: 23187 [2024-11-08 11:21:17,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:21:17,092 INFO L432 NwaCegarLoop]: 1361 mSDtfsCounter, 1152 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:17,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 1444 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 11:21:17,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23187 states. [2024-11-08 11:21:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23187 to 23186. [2024-11-08 11:21:17,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23186 states, 23185 states have (on average 1.1656674574078068) internal successors, (27026), 23185 states have internal predecessors, (27026), 0 states have call successors, (0), 0 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 11:21:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23186 states to 23186 states and 27026 transitions. [2024-11-08 11:21:17,345 INFO L78 Accepts]: Start accepts. Automaton has 23186 states and 27026 transitions. Word has length 296 [2024-11-08 11:21:17,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:17,346 INFO L471 AbstractCegarLoop]: Abstraction has 23186 states and 27026 transitions. [2024-11-08 11:21:17,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 23186 states and 27026 transitions. [2024-11-08 11:21:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-11-08 11:21:17,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:17,353 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:21:17,371 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 11:21:17,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:21:17,559 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:17,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:17,560 INFO L85 PathProgramCache]: Analyzing trace with hash 340188005, now seen corresponding path program 1 times [2024-11-08 11:21:17,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:17,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140442063] [2024-11-08 11:21:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-08 11:21:17,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:17,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140442063] [2024-11-08 11:21:17,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140442063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:17,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:21:17,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:21:17,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154460314] [2024-11-08 11:21:17,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:17,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:17,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:17,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:17,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:21:17,936 INFO L87 Difference]: Start difference. First operand 23186 states and 27026 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) 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 11:21:21,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:21,093 INFO L93 Difference]: Finished difference Result 57396 states and 67689 transitions. [2024-11-08 11:21:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:21,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) 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 346 [2024-11-08 11:21:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:21,139 INFO L225 Difference]: With dead ends: 57396 [2024-11-08 11:21:21,140 INFO L226 Difference]: Without dead ends: 34999 [2024-11-08 11:21:21,161 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 11:21:21,162 INFO L432 NwaCegarLoop]: 1803 mSDtfsCounter, 808 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:21,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1946 Invalid, 3271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 11:21:21,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34999 states. [2024-11-08 11:21:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34999 to 34208. [2024-11-08 11:21:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34208 states, 34207 states have (on average 1.132253632297483) internal successors, (38731), 34207 states have internal predecessors, (38731), 0 states have call successors, (0), 0 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 11:21:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34208 states to 34208 states and 38731 transitions. [2024-11-08 11:21:21,520 INFO L78 Accepts]: Start accepts. Automaton has 34208 states and 38731 transitions. Word has length 346 [2024-11-08 11:21:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:21,521 INFO L471 AbstractCegarLoop]: Abstraction has 34208 states and 38731 transitions. [2024-11-08 11:21:21,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) 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 11:21:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 34208 states and 38731 transitions. [2024-11-08 11:21:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-08 11:21:21,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:21,526 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:21:21,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 11:21:21,526 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:21,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:21,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1326340775, now seen corresponding path program 1 times [2024-11-08 11:21:21,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:21,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113913443] [2024-11-08 11:21:21,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:21,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 237 proven. 110 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-08 11:21:22,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:22,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113913443] [2024-11-08 11:21:22,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113913443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:21:22,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685327700] [2024-11-08 11:21:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:22,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:21:22,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:21:22,576 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 11:21:22,577 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 11:21:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:22,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:21:22,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:21:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-08 11:21:22,832 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:21:22,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685327700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:22,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:21:22,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-08 11:21:22,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090211723] [2024-11-08 11:21:22,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:22,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:22,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:22,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:22,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:21:22,834 INFO L87 Difference]: Start difference. First operand 34208 states and 38731 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:25,433 INFO L93 Difference]: Finished difference Result 67618 states and 76660 transitions. [2024-11-08 11:21:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2024-11-08 11:21:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:25,476 INFO L225 Difference]: With dead ends: 67618 [2024-11-08 11:21:25,476 INFO L226 Difference]: Without dead ends: 34199 [2024-11-08 11:21:25,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:21:25,503 INFO L432 NwaCegarLoop]: 686 mSDtfsCounter, 1076 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:25,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 814 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 11:21:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34199 states. [2024-11-08 11:21:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34199 to 34198. [2024-11-08 11:21:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34198 states, 34197 states have (on average 1.096704389273913) internal successors, (37504), 34197 states have internal predecessors, (37504), 0 states have call successors, (0), 0 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 11:21:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34198 states to 34198 states and 37504 transitions. [2024-11-08 11:21:25,943 INFO L78 Accepts]: Start accepts. Automaton has 34198 states and 37504 transitions. Word has length 361 [2024-11-08 11:21:25,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:25,944 INFO L471 AbstractCegarLoop]: Abstraction has 34198 states and 37504 transitions. [2024-11-08 11:21:25,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 34198 states and 37504 transitions. [2024-11-08 11:21:25,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-08 11:21:25,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:25,951 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:21:25,969 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 11:21:26,155 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,SelfDestructingSolverStorable9 [2024-11-08 11:21:26,156 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:26,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:26,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1003168422, now seen corresponding path program 1 times [2024-11-08 11:21:26,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:26,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75321748] [2024-11-08 11:21:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:26,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-08 11:21:26,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:26,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75321748] [2024-11-08 11:21:26,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75321748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:26,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:21:26,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:21:26,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546044296] [2024-11-08 11:21:26,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:26,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:21:26,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:26,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:21:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:21:26,424 INFO L87 Difference]: Start difference. First operand 34198 states and 37504 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 11:21:32,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:32,317 INFO L93 Difference]: Finished difference Result 119762 states and 131663 transitions. [2024-11-08 11:21:32,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:21:32,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 403 [2024-11-08 11:21:32,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:32,415 INFO L225 Difference]: With dead ends: 119762 [2024-11-08 11:21:32,416 INFO L226 Difference]: Without dead ends: 86353 [2024-11-08 11:21:32,450 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 11:21:32,451 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 1711 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 6030 mSolverCounterSat, 1082 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 7112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1082 IncrementalHoareTripleChecker+Valid, 6030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:32,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 780 Invalid, 7112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1082 Valid, 6030 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-08 11:21:32,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86353 states. [2024-11-08 11:21:33,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86353 to 83862. [2024-11-08 11:21:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83862 states, 83861 states have (on average 1.0877881255887718) internal successors, (91223), 83861 states have internal predecessors, (91223), 0 states have call successors, (0), 0 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 11:21:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83862 states to 83862 states and 91223 transitions. [2024-11-08 11:21:33,291 INFO L78 Accepts]: Start accepts. Automaton has 83862 states and 91223 transitions. Word has length 403 [2024-11-08 11:21:33,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:33,291 INFO L471 AbstractCegarLoop]: Abstraction has 83862 states and 91223 transitions. [2024-11-08 11:21:33,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 11:21:33,292 INFO L276 IsEmpty]: Start isEmpty. Operand 83862 states and 91223 transitions. [2024-11-08 11:21:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-08 11:21:33,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:33,298 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:21:33,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 11:21:33,299 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:33,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:33,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1995365954, now seen corresponding path program 1 times [2024-11-08 11:21:33,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:33,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173027070] [2024-11-08 11:21:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:33,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 321 proven. 110 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-08 11:21:34,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:34,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173027070] [2024-11-08 11:21:34,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173027070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:21:34,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40052167] [2024-11-08 11:21:34,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:34,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:21:34,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:21:34,876 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 11:21:34,879 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 11:21:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:35,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:21:35,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:21:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-08 11:21:35,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:21:35,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40052167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:35,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:21:35,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-08 11:21:35,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134136373] [2024-11-08 11:21:35,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:35,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:35,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:35,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:35,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:21:35,189 INFO L87 Difference]: Start difference. First operand 83862 states and 91223 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:38,260 INFO L93 Difference]: Finished difference Result 165345 states and 181495 transitions. [2024-11-08 11:21:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:38,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2024-11-08 11:21:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:38,520 INFO L225 Difference]: With dead ends: 165345 [2024-11-08 11:21:38,520 INFO L226 Difference]: Without dead ends: 93300 [2024-11-08 11:21:38,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:21:38,555 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 1215 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:38,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 407 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 11:21:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93300 states. [2024-11-08 11:21:39,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93300 to 93300. [2024-11-08 11:21:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93300 states, 93299 states have (on average 1.0913407432019635) internal successors, (101821), 93299 states have internal predecessors, (101821), 0 states have call successors, (0), 0 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 11:21:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93300 states to 93300 states and 101821 transitions. [2024-11-08 11:21:39,850 INFO L78 Accepts]: Start accepts. Automaton has 93300 states and 101821 transitions. Word has length 403 [2024-11-08 11:21:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:39,850 INFO L471 AbstractCegarLoop]: Abstraction has 93300 states and 101821 transitions. [2024-11-08 11:21:39,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 93300 states and 101821 transitions. [2024-11-08 11:21:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-08 11:21:39,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:39,860 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:21:39,877 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 11:21:40,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:21:40,061 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:40,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash -799256936, now seen corresponding path program 1 times [2024-11-08 11:21:40,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:40,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787510832] [2024-11-08 11:21:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:40,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-08 11:21:40,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:40,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787510832] [2024-11-08 11:21:40,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787510832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:40,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:21:40,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:21:40,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185465579] [2024-11-08 11:21:40,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:40,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:40,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:40,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:40,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:21:40,818 INFO L87 Difference]: Start difference. First operand 93300 states and 101821 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 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 11:21:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:44,125 INFO L93 Difference]: Finished difference Result 210232 states and 229001 transitions. [2024-11-08 11:21:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:44,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 436 [2024-11-08 11:21:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:44,280 INFO L225 Difference]: With dead ends: 210232 [2024-11-08 11:21:44,280 INFO L226 Difference]: Without dead ends: 117721 [2024-11-08 11:21:44,305 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 11:21:44,310 INFO L432 NwaCegarLoop]: 982 mSDtfsCounter, 798 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:44,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1122 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 11:21:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117721 states. [2024-11-08 11:21:45,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117721 to 115338. [2024-11-08 11:21:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115338 states, 115337 states have (on average 1.0818384386623547) internal successors, (124776), 115337 states have internal predecessors, (124776), 0 states have call successors, (0), 0 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 11:21:45,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115338 states to 115338 states and 124776 transitions. [2024-11-08 11:21:45,683 INFO L78 Accepts]: Start accepts. Automaton has 115338 states and 124776 transitions. Word has length 436 [2024-11-08 11:21:45,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:45,684 INFO L471 AbstractCegarLoop]: Abstraction has 115338 states and 124776 transitions. [2024-11-08 11:21:45,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 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 11:21:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 115338 states and 124776 transitions. [2024-11-08 11:21:45,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-11-08 11:21:45,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:45,693 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:21:45,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 11:21:45,693 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:45,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:45,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1039192784, now seen corresponding path program 1 times [2024-11-08 11:21:45,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:45,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719745672] [2024-11-08 11:21:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:45,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 403 proven. 113 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-08 11:21:47,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:47,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719745672] [2024-11-08 11:21:47,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719745672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:21:47,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618433455] [2024-11-08 11:21:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:47,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:21:47,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:21:47,284 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 11:21:47,285 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 11:21:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:47,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:21:47,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:21:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2024-11-08 11:21:47,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:21:47,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618433455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:47,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:21:47,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-08 11:21:47,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379085522] [2024-11-08 11:21:47,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:47,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:47,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:47,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:21:47,540 INFO L87 Difference]: Start difference. First operand 115338 states and 124776 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)