./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.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/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.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 a7eb970df9460734baa401f9be0d88efb243a90e1dffe6744cd9f9a47afa0217 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 15:35:43,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 15:35:43,210 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 15:35:43,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 15:35:43,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 15:35:43,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 15:35:43,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 15:35:43,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 15:35:43,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 15:35:43,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 15:35:43,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 15:35:43,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 15:35:43,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 15:35:43,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 15:35:43,243 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 15:35:43,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 15:35:43,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 15:35:43,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 15:35:43,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 15:35:43,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 15:35:43,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 15:35:43,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 15:35:43,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 15:35:43,249 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 15:35:43,249 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 15:35:43,249 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 15:35:43,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 15:35:43,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 15:35:43,250 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 15:35:43,250 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 15:35:43,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 15:35:43,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 15:35:43,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:35:43,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 15:35:43,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 15:35:43,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 15:35:43,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 15:35:43,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 15:35:43,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 15:35:43,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 15:35:43,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 15:35:43,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 15:35:43,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7eb970df9460734baa401f9be0d88efb243a90e1dffe6744cd9f9a47afa0217 [2024-11-08 15:35:43,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 15:35:43,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 15:35:43,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 15:35:43,481 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 15:35:43,481 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 15:35:43,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2024-11-08 15:35:44,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 15:35:45,058 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 15:35:45,059 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2024-11-08 15:35:45,071 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6211cdeed/8df759ace1914046a1db2ccce61d5ba4/FLAGb555019d6 [2024-11-08 15:35:45,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6211cdeed/8df759ace1914046a1db2ccce61d5ba4 [2024-11-08 15:35:45,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 15:35:45,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 15:35:45,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 15:35:45,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 15:35:45,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 15:35:45,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bd70c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45, skipping insertion in model container [2024-11-08 15:35:45,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 15:35:45,318 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/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2024-11-08 15:35:45,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:35:45,331 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 15:35:45,370 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/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2024-11-08 15:35:45,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:35:45,391 INFO L204 MainTranslator]: Completed translation [2024-11-08 15:35:45,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45 WrapperNode [2024-11-08 15:35:45,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 15:35:45,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 15:35:45,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 15:35:45,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 15:35:45,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,406 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,434 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 247 [2024-11-08 15:35:45,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 15:35:45,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 15:35:45,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 15:35:45,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 15:35:45,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,454 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,465 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 15:35:45,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 15:35:45,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 15:35:45,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 15:35:45,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 15:35:45,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (1/1) ... [2024-11-08 15:35:45,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:35:45,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:35:45,513 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 15:35:45,515 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 15:35:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 15:35:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 15:35:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 15:35:45,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 15:35:45,707 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 15:35:45,709 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 15:35:46,001 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-08 15:35:46,001 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 15:35:46,010 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 15:35:46,011 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 15:35:46,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:35:46 BoogieIcfgContainer [2024-11-08 15:35:46,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 15:35:46,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 15:35:46,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 15:35:46,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 15:35:46,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 03:35:45" (1/3) ... [2024-11-08 15:35:46,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cba730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:35:46, skipping insertion in model container [2024-11-08 15:35:46,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:35:45" (2/3) ... [2024-11-08 15:35:46,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cba730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:35:46, skipping insertion in model container [2024-11-08 15:35:46,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:35:46" (3/3) ... [2024-11-08 15:35:46,017 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2024-11-08 15:35:46,029 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 15:35:46,029 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 15:35:46,079 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 15:35:46,085 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;@3f43440d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 15:35:46,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 15:35:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 64 states have (on average 1.703125) internal successors, (109), 65 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 15:35:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 15:35:46,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:46,096 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] [2024-11-08 15:35:46,097 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:46,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1504435911, now seen corresponding path program 1 times [2024-11-08 15:35:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:46,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763791471] [2024-11-08 15:35:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:46,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:46,432 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 15:35:46,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:46,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763791471] [2024-11-08 15:35:46,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763791471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:46,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:46,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:35:46,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302421038] [2024-11-08 15:35:46,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:46,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:35:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:46,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:35:46,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:35:46,459 INFO L87 Difference]: Start difference. First operand has 66 states, 64 states have (on average 1.703125) internal successors, (109), 65 states have internal predecessors, (109), 0 states have call successors, (0), 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 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 15:35:46,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:46,521 INFO L93 Difference]: Finished difference Result 152 states and 247 transitions. [2024-11-08 15:35:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:35:46,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-11-08 15:35:46,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:46,533 INFO L225 Difference]: With dead ends: 152 [2024-11-08 15:35:46,533 INFO L226 Difference]: Without dead ends: 101 [2024-11-08 15:35:46,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:35:46,540 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 61 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:46,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 383 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:46,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-08 15:35:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 62. [2024-11-08 15:35:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 61 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 15:35:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 85 transitions. [2024-11-08 15:35:46,569 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 85 transitions. Word has length 25 [2024-11-08 15:35:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:46,569 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 85 transitions. [2024-11-08 15:35:46,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 15:35:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2024-11-08 15:35:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 15:35:46,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:46,570 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] [2024-11-08 15:35:46,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 15:35:46,571 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:46,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:46,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1452762621, now seen corresponding path program 1 times [2024-11-08 15:35:46,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:46,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711324602] [2024-11-08 15:35:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:46,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:46,659 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 15:35:46,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:46,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711324602] [2024-11-08 15:35:46,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711324602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:46,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:46,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:35:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633372912] [2024-11-08 15:35:46,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:46,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:35:46,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:46,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:35:46,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:35:46,664 INFO L87 Difference]: Start difference. First operand 62 states and 85 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 15:35:46,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:46,685 INFO L93 Difference]: Finished difference Result 132 states and 195 transitions. [2024-11-08 15:35:46,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:35:46,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-08 15:35:46,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:46,687 INFO L225 Difference]: With dead ends: 132 [2024-11-08 15:35:46,687 INFO L226 Difference]: Without dead ends: 93 [2024-11-08 15:35:46,688 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 15:35:46,689 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 46 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:46,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 177 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-08 15:35:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2024-11-08 15:35:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4555555555555555) internal successors, (131), 90 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 15:35:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 131 transitions. [2024-11-08 15:35:46,697 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 131 transitions. Word has length 41 [2024-11-08 15:35:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:46,697 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 131 transitions. [2024-11-08 15:35:46,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 15:35:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 131 transitions. [2024-11-08 15:35:46,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 15:35:46,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:46,699 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] [2024-11-08 15:35:46,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 15:35:46,699 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:46,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:46,700 INFO L85 PathProgramCache]: Analyzing trace with hash -364684482, now seen corresponding path program 1 times [2024-11-08 15:35:46,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:46,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102504387] [2024-11-08 15:35:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:46,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:46,792 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 15:35:46,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:46,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102504387] [2024-11-08 15:35:46,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102504387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:46,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:46,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:35:46,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532250319] [2024-11-08 15:35:46,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:46,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:35:46,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:46,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:35:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:35:46,794 INFO L87 Difference]: Start difference. First operand 91 states and 131 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 15:35:46,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:46,811 INFO L93 Difference]: Finished difference Result 211 states and 319 transitions. [2024-11-08 15:35:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:35:46,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-08 15:35:46,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:46,813 INFO L225 Difference]: With dead ends: 211 [2024-11-08 15:35:46,813 INFO L226 Difference]: Without dead ends: 143 [2024-11-08 15:35:46,813 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 15:35:46,814 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 42 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:46,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-08 15:35:46,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2024-11-08 15:35:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4857142857142858) internal successors, (208), 140 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 15:35:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2024-11-08 15:35:46,823 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 41 [2024-11-08 15:35:46,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:46,823 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2024-11-08 15:35:46,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 15:35:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2024-11-08 15:35:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 15:35:46,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:46,824 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] [2024-11-08 15:35:46,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 15:35:46,825 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:46,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1258940161, now seen corresponding path program 1 times [2024-11-08 15:35:46,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:46,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736984394] [2024-11-08 15:35:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:46,953 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 15:35:46,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:46,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736984394] [2024-11-08 15:35:46,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736984394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:46,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:46,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:35:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916226494] [2024-11-08 15:35:46,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:46,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:35:46,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:46,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:35:46,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:35:46,958 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 15:35:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:47,049 INFO L93 Difference]: Finished difference Result 613 states and 948 transitions. [2024-11-08 15:35:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:35:47,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-08 15:35:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:47,052 INFO L225 Difference]: With dead ends: 613 [2024-11-08 15:35:47,056 INFO L226 Difference]: Without dead ends: 495 [2024-11-08 15:35:47,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:35:47,060 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 315 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:47,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 427 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:35:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-08 15:35:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 257. [2024-11-08 15:35:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.5) internal successors, (384), 256 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 15:35:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 384 transitions. [2024-11-08 15:35:47,079 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 384 transitions. Word has length 41 [2024-11-08 15:35:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:47,080 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 384 transitions. [2024-11-08 15:35:47,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 15:35:47,080 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 384 transitions. [2024-11-08 15:35:47,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 15:35:47,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:47,081 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] [2024-11-08 15:35:47,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 15:35:47,081 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:47,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:47,082 INFO L85 PathProgramCache]: Analyzing trace with hash -755762794, now seen corresponding path program 1 times [2024-11-08 15:35:47,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:47,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211863353] [2024-11-08 15:35:47,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:47,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:47,280 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 15:35:47,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:47,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211863353] [2024-11-08 15:35:47,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211863353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:47,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:47,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:35:47,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662910212] [2024-11-08 15:35:47,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:47,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:35:47,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:35:47,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:35:47,284 INFO L87 Difference]: Start difference. First operand 257 states and 384 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 15:35:47,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:47,309 INFO L93 Difference]: Finished difference Result 283 states and 417 transitions. [2024-11-08 15:35:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:35:47,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-08 15:35:47,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:47,312 INFO L225 Difference]: With dead ends: 283 [2024-11-08 15:35:47,312 INFO L226 Difference]: Without dead ends: 281 [2024-11-08 15:35:47,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:35:47,314 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:47,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-08 15:35:47,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2024-11-08 15:35:47,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.457142857142857) internal successors, (408), 280 states have internal predecessors, (408), 0 states have call successors, (0), 0 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 15:35:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 408 transitions. [2024-11-08 15:35:47,338 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 408 transitions. Word has length 42 [2024-11-08 15:35:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:47,339 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 408 transitions. [2024-11-08 15:35:47,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 15:35:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 408 transitions. [2024-11-08 15:35:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 15:35:47,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:47,341 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] [2024-11-08 15:35:47,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 15:35:47,342 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:47,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1901231689, now seen corresponding path program 1 times [2024-11-08 15:35:47,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:47,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418349609] [2024-11-08 15:35:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:47,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:47,414 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 15:35:47,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:47,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418349609] [2024-11-08 15:35:47,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418349609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:47,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:47,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:35:47,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879025512] [2024-11-08 15:35:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:47,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:35:47,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:35:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:35:47,418 INFO L87 Difference]: Start difference. First operand 281 states and 408 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 15:35:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:47,438 INFO L93 Difference]: Finished difference Result 737 states and 1078 transitions. [2024-11-08 15:35:47,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:35:47,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-08 15:35:47,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:47,442 INFO L225 Difference]: With dead ends: 737 [2024-11-08 15:35:47,443 INFO L226 Difference]: Without dead ends: 479 [2024-11-08 15:35:47,444 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 15:35:47,446 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 35 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:47,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 145 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:47,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-08 15:35:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2024-11-08 15:35:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.4369747899159664) internal successors, (684), 476 states have internal predecessors, (684), 0 states have call successors, (0), 0 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 15:35:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 684 transitions. [2024-11-08 15:35:47,472 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 684 transitions. Word has length 43 [2024-11-08 15:35:47,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:47,472 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 684 transitions. [2024-11-08 15:35:47,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 15:35:47,473 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 684 transitions. [2024-11-08 15:35:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 15:35:47,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:47,474 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] [2024-11-08 15:35:47,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 15:35:47,474 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:47,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:47,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1969854267, now seen corresponding path program 1 times [2024-11-08 15:35:47,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:47,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118419992] [2024-11-08 15:35:47,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:47,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:47,560 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 15:35:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:47,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118419992] [2024-11-08 15:35:47,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118419992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:47,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:35:47,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904258303] [2024-11-08 15:35:47,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:47,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:35:47,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:47,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:35:47,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:35:47,564 INFO L87 Difference]: Start difference. First operand 477 states and 684 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 15:35:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:47,588 INFO L93 Difference]: Finished difference Result 939 states and 1361 transitions. [2024-11-08 15:35:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:35:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-08 15:35:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:47,590 INFO L225 Difference]: With dead ends: 939 [2024-11-08 15:35:47,590 INFO L226 Difference]: Without dead ends: 681 [2024-11-08 15:35:47,591 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 15:35:47,593 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 50 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:47,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2024-11-08 15:35:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 679. [2024-11-08 15:35:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 1.424778761061947) internal successors, (966), 678 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 15:35:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 966 transitions. [2024-11-08 15:35:47,613 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 966 transitions. Word has length 43 [2024-11-08 15:35:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:47,614 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 966 transitions. [2024-11-08 15:35:47,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 15:35:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 966 transitions. [2024-11-08 15:35:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 15:35:47,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:47,618 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:35:47,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 15:35:47,619 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:47,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:47,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1387559791, now seen corresponding path program 1 times [2024-11-08 15:35:47,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:47,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272102396] [2024-11-08 15:35:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:47,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:35:48,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:48,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272102396] [2024-11-08 15:35:48,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272102396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:35:48,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735139051] [2024-11-08 15:35:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:48,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:35:48,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:35:48,114 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 15:35:48,115 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 15:35:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:48,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 15:35:48,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:35:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:35:48,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:35:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:35:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735139051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:35:49,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:35:49,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-08 15:35:49,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64881955] [2024-11-08 15:35:49,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:35:49,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 15:35:49,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:49,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 15:35:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-08 15:35:49,042 INFO L87 Difference]: Start difference. First operand 679 states and 966 transitions. Second operand has 21 states, 21 states have (on average 8.333333333333334) internal successors, (175), 21 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 15:35:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:53,264 INFO L93 Difference]: Finished difference Result 6681 states and 9503 transitions. [2024-11-08 15:35:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-08 15:35:53,265 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.333333333333334) internal successors, (175), 21 states have internal predecessors, (175), 0 states have call successors, (0), 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 62 [2024-11-08 15:35:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:53,281 INFO L225 Difference]: With dead ends: 6681 [2024-11-08 15:35:53,282 INFO L226 Difference]: Without dead ends: 6027 [2024-11-08 15:35:53,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2675 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1609, Invalid=6763, Unknown=0, NotChecked=0, Total=8372 [2024-11-08 15:35:53,285 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 4303 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4303 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:53,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4303 Valid, 1154 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 15:35:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6027 states. [2024-11-08 15:35:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6027 to 3751. [2024-11-08 15:35:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3750 states have (on average 1.4136) internal successors, (5301), 3750 states have internal predecessors, (5301), 0 states have call successors, (0), 0 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 15:35:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5301 transitions. [2024-11-08 15:35:53,385 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5301 transitions. Word has length 62 [2024-11-08 15:35:53,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:53,385 INFO L471 AbstractCegarLoop]: Abstraction has 3751 states and 5301 transitions. [2024-11-08 15:35:53,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.333333333333334) internal successors, (175), 21 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 15:35:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5301 transitions. [2024-11-08 15:35:53,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 15:35:53,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:53,387 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:35:53,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 15:35:53,587 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 15:35:53,589 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:53,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash 884071765, now seen corresponding path program 1 times [2024-11-08 15:35:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:53,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430983099] [2024-11-08 15:35:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:53,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 15:35:53,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:53,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430983099] [2024-11-08 15:35:53,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430983099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:53,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:53,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:35:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655534848] [2024-11-08 15:35:53,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:53,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:35:53,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:53,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:35:53,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:35:53,746 INFO L87 Difference]: Start difference. First operand 3751 states and 5301 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 15:35:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:53,882 INFO L93 Difference]: Finished difference Result 9311 states and 13286 transitions. [2024-11-08 15:35:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:35:53,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 63 [2024-11-08 15:35:53,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:53,901 INFO L225 Difference]: With dead ends: 9311 [2024-11-08 15:35:53,901 INFO L226 Difference]: Without dead ends: 7417 [2024-11-08 15:35:53,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:35:53,906 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 209 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:53,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 390 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:53,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7417 states. [2024-11-08 15:35:54,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7417 to 5542. [2024-11-08 15:35:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 5541 states have (on average 1.4082295614510016) internal successors, (7803), 5541 states have internal predecessors, (7803), 0 states have call successors, (0), 0 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 15:35:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 7803 transitions. [2024-11-08 15:35:54,093 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 7803 transitions. Word has length 63 [2024-11-08 15:35:54,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:54,094 INFO L471 AbstractCegarLoop]: Abstraction has 5542 states and 7803 transitions. [2024-11-08 15:35:54,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 15:35:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 7803 transitions. [2024-11-08 15:35:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 15:35:54,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:54,095 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:35:54,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 15:35:54,095 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:54,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:54,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1986827273, now seen corresponding path program 1 times [2024-11-08 15:35:54,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:54,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827375404] [2024-11-08 15:35:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:35:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:54,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827375404] [2024-11-08 15:35:54,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827375404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:54,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:54,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:35:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335879408] [2024-11-08 15:35:54,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:54,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:35:54,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:35:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:35:54,164 INFO L87 Difference]: Start difference. First operand 5542 states and 7803 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 15:35:54,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:54,331 INFO L93 Difference]: Finished difference Result 11093 states and 15779 transitions. [2024-11-08 15:35:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:35:54,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 64 [2024-11-08 15:35:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:54,353 INFO L225 Difference]: With dead ends: 11093 [2024-11-08 15:35:54,353 INFO L226 Difference]: Without dead ends: 9217 [2024-11-08 15:35:54,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:35:54,359 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 209 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:54,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 368 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9217 states. [2024-11-08 15:35:54,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9217 to 7329. [2024-11-08 15:35:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 7328 states have (on average 1.40625) internal successors, (10305), 7328 states have internal predecessors, (10305), 0 states have call successors, (0), 0 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 15:35:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 10305 transitions. [2024-11-08 15:35:54,534 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 10305 transitions. Word has length 64 [2024-11-08 15:35:54,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:54,534 INFO L471 AbstractCegarLoop]: Abstraction has 7329 states and 10305 transitions. [2024-11-08 15:35:54,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 15:35:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 10305 transitions. [2024-11-08 15:35:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 15:35:54,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:54,535 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:35:54,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 15:35:54,536 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:54,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash 128518073, now seen corresponding path program 1 times [2024-11-08 15:35:54,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:54,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130154820] [2024-11-08 15:35:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:54,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:35:54,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:54,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130154820] [2024-11-08 15:35:54,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130154820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:54,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:54,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:35:54,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071115883] [2024-11-08 15:35:54,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:54,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:35:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:35:54,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:35:54,581 INFO L87 Difference]: Start difference. First operand 7329 states and 10305 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 15:35:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:54,788 INFO L93 Difference]: Finished difference Result 21004 states and 29365 transitions. [2024-11-08 15:35:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:35:54,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-08 15:35:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:54,819 INFO L225 Difference]: With dead ends: 21004 [2024-11-08 15:35:54,819 INFO L226 Difference]: Without dead ends: 13796 [2024-11-08 15:35:54,828 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 15:35:54,829 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 35 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:54,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 196 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:54,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13796 states. [2024-11-08 15:35:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13796 to 13730. [2024-11-08 15:35:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13730 states, 13729 states have (on average 1.3767208099643091) internal successors, (18901), 13729 states have internal predecessors, (18901), 0 states have call successors, (0), 0 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 15:35:55,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13730 states to 13730 states and 18901 transitions. [2024-11-08 15:35:55,188 INFO L78 Accepts]: Start accepts. Automaton has 13730 states and 18901 transitions. Word has length 64 [2024-11-08 15:35:55,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:55,188 INFO L471 AbstractCegarLoop]: Abstraction has 13730 states and 18901 transitions. [2024-11-08 15:35:55,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 15:35:55,189 INFO L276 IsEmpty]: Start isEmpty. Operand 13730 states and 18901 transitions. [2024-11-08 15:35:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 15:35:55,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:55,190 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:35:55,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 15:35:55,191 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:55,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1614067746, now seen corresponding path program 1 times [2024-11-08 15:35:55,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:55,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210658554] [2024-11-08 15:35:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:35:55,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:55,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210658554] [2024-11-08 15:35:55,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210658554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:55,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:55,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:35:55,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394456574] [2024-11-08 15:35:55,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:55,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:35:55,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:55,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:35:55,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:35:55,239 INFO L87 Difference]: Start difference. First operand 13730 states and 18901 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 15:35:55,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:55,635 INFO L93 Difference]: Finished difference Result 32557 states and 44891 transitions. [2024-11-08 15:35:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:35:55,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-08 15:35:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:55,659 INFO L225 Difference]: With dead ends: 32557 [2024-11-08 15:35:55,660 INFO L226 Difference]: Without dead ends: 19150 [2024-11-08 15:35:55,669 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 15:35:55,670 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 40 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:55,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 171 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:55,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19150 states. [2024-11-08 15:35:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19150 to 19020. [2024-11-08 15:35:56,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19020 states, 19019 states have (on average 1.3530154056469845) internal successors, (25733), 19019 states have internal predecessors, (25733), 0 states have call successors, (0), 0 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 15:35:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19020 states to 19020 states and 25733 transitions. [2024-11-08 15:35:56,073 INFO L78 Accepts]: Start accepts. Automaton has 19020 states and 25733 transitions. Word has length 64 [2024-11-08 15:35:56,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:56,073 INFO L471 AbstractCegarLoop]: Abstraction has 19020 states and 25733 transitions. [2024-11-08 15:35:56,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 15:35:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 19020 states and 25733 transitions. [2024-11-08 15:35:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 15:35:56,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:56,075 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:35:56,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 15:35:56,075 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:56,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:56,076 INFO L85 PathProgramCache]: Analyzing trace with hash -231299420, now seen corresponding path program 1 times [2024-11-08 15:35:56,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:56,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738459471] [2024-11-08 15:35:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:56,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 15:35:56,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:56,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738459471] [2024-11-08 15:35:56,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738459471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:35:56,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:35:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:35:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423468791] [2024-11-08 15:35:56,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:35:56,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:35:56,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:35:56,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:35:56,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:35:56,145 INFO L87 Difference]: Start difference. First operand 19020 states and 25733 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 15:35:56,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:35:56,654 INFO L93 Difference]: Finished difference Result 32478 states and 44409 transitions. [2024-11-08 15:35:56,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:35:56,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 64 [2024-11-08 15:35:56,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:35:56,694 INFO L225 Difference]: With dead ends: 32478 [2024-11-08 15:35:56,694 INFO L226 Difference]: Without dead ends: 26916 [2024-11-08 15:35:56,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:35:56,704 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 215 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:35:56,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 396 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:35:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26916 states. [2024-11-08 15:35:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26916 to 24229. [2024-11-08 15:35:57,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24229 states, 24228 states have (on average 1.3519894337130594) internal successors, (32756), 24228 states have internal predecessors, (32756), 0 states have call successors, (0), 0 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 15:35:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24229 states to 24229 states and 32756 transitions. [2024-11-08 15:35:57,411 INFO L78 Accepts]: Start accepts. Automaton has 24229 states and 32756 transitions. Word has length 64 [2024-11-08 15:35:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:35:57,412 INFO L471 AbstractCegarLoop]: Abstraction has 24229 states and 32756 transitions. [2024-11-08 15:35:57,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 15:35:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 24229 states and 32756 transitions. [2024-11-08 15:35:57,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 15:35:57,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:35:57,413 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:35:57,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 15:35:57,414 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:35:57,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:35:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1027507446, now seen corresponding path program 1 times [2024-11-08 15:35:57,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:35:57,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995381501] [2024-11-08 15:35:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:57,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:35:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:35:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:35:57,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995381501] [2024-11-08 15:35:57,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995381501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:35:57,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941096071] [2024-11-08 15:35:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:35:57,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:35:57,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:35:57,691 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 15:35:57,692 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 15:35:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:35:57,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-08 15:35:57,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:36:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:00,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:36:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941096071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:36:04,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:36:04,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 19, 22] total 45 [2024-11-08 15:36:04,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292277747] [2024-11-08 15:36:04,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:36:04,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-08 15:36:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-08 15:36:04,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1630, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 15:36:04,136 INFO L87 Difference]: Start difference. First operand 24229 states and 32756 transitions. Second operand has 45 states, 45 states have (on average 3.977777777777778) internal successors, (179), 45 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:36:50,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:50,531 INFO L93 Difference]: Finished difference Result 255194 states and 344882 transitions. [2024-11-08 15:36:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2024-11-08 15:36:50,532 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.977777777777778) internal successors, (179), 45 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-08 15:36:50,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:51,017 INFO L225 Difference]: With dead ends: 255194 [2024-11-08 15:36:51,017 INFO L226 Difference]: Without dead ends: 231001 [2024-11-08 15:36:51,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51499 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=23079, Invalid=86813, Unknown=0, NotChecked=0, Total=109892 [2024-11-08 15:36:51,080 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 5915 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 4293 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5915 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 4546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 4293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:51,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5915 Valid, 3132 Invalid, 4546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 4293 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-08 15:36:51,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231001 states. [2024-11-08 15:36:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231001 to 92781. [2024-11-08 15:36:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92781 states, 92780 states have (on average 1.3494503125673636) internal successors, (125202), 92780 states have internal predecessors, (125202), 0 states have call successors, (0), 0 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 15:36:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92781 states to 92781 states and 125202 transitions. [2024-11-08 15:36:55,247 INFO L78 Accepts]: Start accepts. Automaton has 92781 states and 125202 transitions. Word has length 66 [2024-11-08 15:36:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:55,247 INFO L471 AbstractCegarLoop]: Abstraction has 92781 states and 125202 transitions. [2024-11-08 15:36:55,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.977777777777778) internal successors, (179), 45 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:36:55,248 INFO L276 IsEmpty]: Start isEmpty. Operand 92781 states and 125202 transitions. [2024-11-08 15:36:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 15:36:55,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:55,251 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 15:36:55,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 15:36:55,454 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,SelfDestructingSolverStorable13 [2024-11-08 15:36:55,455 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:55,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash 556898489, now seen corresponding path program 1 times [2024-11-08 15:36:55,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:55,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188421517] [2024-11-08 15:36:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:55,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:55,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:55,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188421517] [2024-11-08 15:36:55,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188421517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:55,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:55,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:36:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576015433] [2024-11-08 15:36:55,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:55,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:36:55,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:55,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:36:55,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:36:55,682 INFO L87 Difference]: Start difference. First operand 92781 states and 125202 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 15:36:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:58,565 INFO L93 Difference]: Finished difference Result 152776 states and 205834 transitions. [2024-11-08 15:36:58,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:36:58,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-08 15:36:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:58,662 INFO L225 Difference]: With dead ends: 152776 [2024-11-08 15:36:58,662 INFO L226 Difference]: Without dead ends: 92361 [2024-11-08 15:36:58,690 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 15:36:58,690 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 36 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:58,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 207 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:58,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92361 states. [2024-11-08 15:37:01,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92361 to 84419. [2024-11-08 15:37:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84419 states, 84418 states have (on average 1.337605723897747) internal successors, (112918), 84418 states have internal predecessors, (112918), 0 states have call successors, (0), 0 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 15:37:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84419 states to 84419 states and 112918 transitions. [2024-11-08 15:37:02,074 INFO L78 Accepts]: Start accepts. Automaton has 84419 states and 112918 transitions. Word has length 66 [2024-11-08 15:37:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:02,074 INFO L471 AbstractCegarLoop]: Abstraction has 84419 states and 112918 transitions. [2024-11-08 15:37:02,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 15:37:02,074 INFO L276 IsEmpty]: Start isEmpty. Operand 84419 states and 112918 transitions. [2024-11-08 15:37:02,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 15:37:02,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:02,079 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 15:37:02,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 15:37:02,079 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:02,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:02,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1811395150, now seen corresponding path program 1 times [2024-11-08 15:37:02,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:02,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467750502] [2024-11-08 15:37:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:02,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:02,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467750502] [2024-11-08 15:37:02,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467750502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:02,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:02,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:37:02,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682332811] [2024-11-08 15:37:02,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:02,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:37:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:02,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:37:02,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:37:02,133 INFO L87 Difference]: Start difference. First operand 84419 states and 112918 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 15:37:07,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:07,171 INFO L93 Difference]: Finished difference Result 224152 states and 297351 transitions. [2024-11-08 15:37:07,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:37:07,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-11-08 15:37:07,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:07,400 INFO L225 Difference]: With dead ends: 224152 [2024-11-08 15:37:07,400 INFO L226 Difference]: Without dead ends: 140286 [2024-11-08 15:37:07,479 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 15:37:07,480 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 31 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:07,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 209 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:07,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140286 states. [2024-11-08 15:37:12,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140286 to 125659. [2024-11-08 15:37:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125659 states, 125658 states have (on average 1.3037610020850243) internal successors, (163828), 125658 states have internal predecessors, (163828), 0 states have call successors, (0), 0 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 15:37:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125659 states to 125659 states and 163828 transitions. [2024-11-08 15:37:12,917 INFO L78 Accepts]: Start accepts. Automaton has 125659 states and 163828 transitions. Word has length 67 [2024-11-08 15:37:12,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:12,921 INFO L471 AbstractCegarLoop]: Abstraction has 125659 states and 163828 transitions. [2024-11-08 15:37:12,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 15:37:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 125659 states and 163828 transitions. [2024-11-08 15:37:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 15:37:12,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:12,925 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:37:12,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 15:37:12,926 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:12,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:12,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1198205875, now seen corresponding path program 1 times [2024-11-08 15:37:12,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:12,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44775468] [2024-11-08 15:37:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:12,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:12,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:12,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44775468] [2024-11-08 15:37:12,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44775468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:37:12,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859100133] [2024-11-08 15:37:12,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:12,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:37:12,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:37:13,000 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 15:37:13,002 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 15:37:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:13,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 15:37:13,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:37:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:13,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:37:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:13,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859100133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:37:13,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:37:13,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 15:37:13,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092603675] [2024-11-08 15:37:13,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:37:13,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 15:37:13,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 15:37:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 15:37:13,284 INFO L87 Difference]: Start difference. First operand 125659 states and 163828 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)