./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.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 06f1e7cb4ad4b39445b3c30d820384fbedafa8e52cac3d3c0cb4d178fb229699 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:09:00,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:09:00,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:09:00,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:09:00,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:09:00,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:09:00,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:09:00,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:09:00,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:09:00,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:09:00,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:09:00,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:09:00,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:09:00,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:09:00,232 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:09:00,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:09:00,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:09:00,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:09:00,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:09:00,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:09:00,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:09:00,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:09:00,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:09:00,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:09:00,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:09:00,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:09:00,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:09:00,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:09:00,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:09:00,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:09:00,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:09:00,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:09:00,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:09:00,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:09:00,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:09:00,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:09:00,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:09:00,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:09:00,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:09:00,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:09:00,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:09:00,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:09:00,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06f1e7cb4ad4b39445b3c30d820384fbedafa8e52cac3d3c0cb4d178fb229699 [2024-11-18 15:09:00,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:09:00,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:09:00,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:09:00,551 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:09:00,551 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:09:00,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2024-11-18 15:09:02,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:09:02,293 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:09:02,294 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2024-11-18 15:09:02,314 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc3c9037/eea01d7db52d4273ac0f99cef484a600/FLAGc6a0432be [2024-11-18 15:09:02,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc3c9037/eea01d7db52d4273ac0f99cef484a600 [2024-11-18 15:09:02,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:09:02,643 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:09:02,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:09:02,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:09:02,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:09:02,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:09:02" (1/1) ... [2024-11-18 15:09:02,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5696b6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:02, skipping insertion in model container [2024-11-18 15:09:02,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:09:02" (1/1) ... [2024-11-18 15:09:02,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:09:03,177 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-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[11714,11727] [2024-11-18 15:09:03,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:09:03,287 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:09:03,375 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-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[11714,11727] [2024-11-18 15:09:03,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:09:03,463 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:09:03,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03 WrapperNode [2024-11-18 15:09:03,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:09:03,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:09:03,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:09:03,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:09:03,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,582 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1037 [2024-11-18 15:09:03,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:09:03,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:09:03,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:09:03,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:09:03,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,606 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,642 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]. [2024-11-18 15:09:03,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,679 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:09:03,696 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:09:03,696 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:09:03,696 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:09:03,697 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (1/1) ... [2024-11-18 15:09:03,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:09:03,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:09:03,736 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) [2024-11-18 15:09:03,739 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 [2024-11-18 15:09:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:09:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:09:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:09:03,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:09:03,960 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:09:03,963 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:09:04,960 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-18 15:09:04,960 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:09:04,986 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:09:04,986 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 15:09:04,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:09:04 BoogieIcfgContainer [2024-11-18 15:09:04,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:09:04,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:09:04,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:09:04,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:09:04,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:09:02" (1/3) ... [2024-11-18 15:09:04,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b685df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:09:04, skipping insertion in model container [2024-11-18 15:09:04,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:09:03" (2/3) ... [2024-11-18 15:09:04,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b685df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:09:04, skipping insertion in model container [2024-11-18 15:09:04,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:09:04" (3/3) ... [2024-11-18 15:09:04,995 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2024-11-18 15:09:05,010 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:09:05,010 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:09:05,092 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:09:05,101 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;@33c22ab0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:09:05,101 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:09:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 255 states have (on average 1.6705882352941177) internal successors, (426), 256 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:09:05,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:05,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:05,122 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:05,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:05,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1061563800, now seen corresponding path program 1 times [2024-11-18 15:09:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276511213] [2024-11-18 15:09:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:05,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:05,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:05,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276511213] [2024-11-18 15:09:05,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276511213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:05,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:05,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:09:05,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188476664] [2024-11-18 15:09:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:05,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:09:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:05,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:09:05,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:09:05,801 INFO L87 Difference]: Start difference. First operand has 257 states, 255 states have (on average 1.6705882352941177) internal successors, (426), 256 states have internal predecessors, (426), 0 states have call successors, (0), 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 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:05,959 INFO L93 Difference]: Finished difference Result 472 states and 770 transitions. [2024-11-18 15:09:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:09:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-11-18 15:09:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:05,977 INFO L225 Difference]: With dead ends: 472 [2024-11-18 15:09:05,977 INFO L226 Difference]: Without dead ends: 254 [2024-11-18 15:09:05,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:09:05,985 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 0 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:05,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1223 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:09:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-18 15:09:06,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-11-18 15:09:06,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5019762845849802) internal successors, (380), 253 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 380 transitions. [2024-11-18 15:09:06,050 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 380 transitions. Word has length 91 [2024-11-18 15:09:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:06,051 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 380 transitions. [2024-11-18 15:09:06,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:06,051 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 380 transitions. [2024-11-18 15:09:06,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 15:09:06,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:06,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:06,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:09:06,060 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:06,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:06,061 INFO L85 PathProgramCache]: Analyzing trace with hash 580651905, now seen corresponding path program 1 times [2024-11-18 15:09:06,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:06,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034479105] [2024-11-18 15:09:06,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:06,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:06,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:06,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034479105] [2024-11-18 15:09:06,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034479105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:06,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:06,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:09:06,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117063643] [2024-11-18 15:09:06,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:06,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:09:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:06,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:09:06,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:09:06,292 INFO L87 Difference]: Start difference. First operand 254 states and 380 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:06,338 INFO L93 Difference]: Finished difference Result 555 states and 860 transitions. [2024-11-18 15:09:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:09:06,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-11-18 15:09:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:06,342 INFO L225 Difference]: With dead ends: 555 [2024-11-18 15:09:06,342 INFO L226 Difference]: Without dead ends: 362 [2024-11-18 15:09:06,343 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 [2024-11-18 15:09:06,344 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 207 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:06,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 662 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:09:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-18 15:09:06,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 360. [2024-11-18 15:09:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.5264623955431755) internal successors, (548), 359 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 548 transitions. [2024-11-18 15:09:06,361 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 548 transitions. Word has length 130 [2024-11-18 15:09:06,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:06,362 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 548 transitions. [2024-11-18 15:09:06,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 548 transitions. [2024-11-18 15:09:06,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-18 15:09:06,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:06,367 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:06,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:09:06,368 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:06,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1531216486, now seen corresponding path program 1 times [2024-11-18 15:09:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:06,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24294063] [2024-11-18 15:09:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:06,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:06,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:06,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24294063] [2024-11-18 15:09:06,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24294063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:06,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:06,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:09:06,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020381504] [2024-11-18 15:09:06,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:06,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:09:06,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:06,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:09:06,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:09:06,553 INFO L87 Difference]: Start difference. First operand 360 states and 548 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:06,671 INFO L93 Difference]: Finished difference Result 843 states and 1319 transitions. [2024-11-18 15:09:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:09:06,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2024-11-18 15:09:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:06,680 INFO L225 Difference]: With dead ends: 843 [2024-11-18 15:09:06,683 INFO L226 Difference]: Without dead ends: 550 [2024-11-18 15:09:06,687 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 [2024-11-18 15:09:06,692 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 194 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:06,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 705 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:09:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-18 15:09:06,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 548. [2024-11-18 15:09:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 1.546617915904936) internal successors, (846), 547 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 846 transitions. [2024-11-18 15:09:06,758 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 846 transitions. Word has length 132 [2024-11-18 15:09:06,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:06,758 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 846 transitions. [2024-11-18 15:09:06,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 846 transitions. [2024-11-18 15:09:06,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 15:09:06,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:06,774 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:06,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:09:06,774 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:06,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:06,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1634279726, now seen corresponding path program 1 times [2024-11-18 15:09:06,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:06,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609059005] [2024-11-18 15:09:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:06,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:06,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:06,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609059005] [2024-11-18 15:09:06,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609059005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:06,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:06,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:09:06,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843843167] [2024-11-18 15:09:06,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:06,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:09:06,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:06,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:09:06,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:09:06,994 INFO L87 Difference]: Start difference. First operand 548 states and 846 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:07,030 INFO L93 Difference]: Finished difference Result 1349 states and 2123 transitions. [2024-11-18 15:09:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:09:07,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2024-11-18 15:09:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:07,037 INFO L225 Difference]: With dead ends: 1349 [2024-11-18 15:09:07,037 INFO L226 Difference]: Without dead ends: 874 [2024-11-18 15:09:07,038 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 [2024-11-18 15:09:07,039 INFO L432 NwaCegarLoop]: 401 mSDtfsCounter, 181 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:07,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 669 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:09:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-11-18 15:09:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 872. [2024-11-18 15:09:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.5591274397244546) internal successors, (1358), 871 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1358 transitions. [2024-11-18 15:09:07,066 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1358 transitions. Word has length 134 [2024-11-18 15:09:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:07,067 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1358 transitions. [2024-11-18 15:09:07,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1358 transitions. [2024-11-18 15:09:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-18 15:09:07,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:07,073 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:07,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:09:07,073 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:07,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1057437148, now seen corresponding path program 1 times [2024-11-18 15:09:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:07,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891353495] [2024-11-18 15:09:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:07,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:07,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891353495] [2024-11-18 15:09:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891353495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:07,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:07,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:09:07,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319752720] [2024-11-18 15:09:07,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:07,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:09:07,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:07,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:09:07,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:09:07,238 INFO L87 Difference]: Start difference. First operand 872 states and 1358 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:07,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:07,280 INFO L93 Difference]: Finished difference Result 2207 states and 3479 transitions. [2024-11-18 15:09:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:09:07,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2024-11-18 15:09:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:07,296 INFO L225 Difference]: With dead ends: 2207 [2024-11-18 15:09:07,300 INFO L226 Difference]: Without dead ends: 1414 [2024-11-18 15:09:07,302 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 [2024-11-18 15:09:07,304 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 168 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:07,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 602 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:09:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2024-11-18 15:09:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1412. [2024-11-18 15:09:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 1.56343019135365) internal successors, (2206), 1411 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2206 transitions. [2024-11-18 15:09:07,356 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2206 transitions. Word has length 136 [2024-11-18 15:09:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:07,356 INFO L471 AbstractCegarLoop]: Abstraction has 1412 states and 2206 transitions. [2024-11-18 15:09:07,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2206 transitions. [2024-11-18 15:09:07,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-18 15:09:07,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:07,361 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:07,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:09:07,361 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:07,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:07,362 INFO L85 PathProgramCache]: Analyzing trace with hash -518774298, now seen corresponding path program 1 times [2024-11-18 15:09:07,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:07,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221729668] [2024-11-18 15:09:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:07,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:07,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:07,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221729668] [2024-11-18 15:09:07,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221729668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:07,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:07,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:09:07,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114416800] [2024-11-18 15:09:07,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:07,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:09:07,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:07,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:09:07,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:09:07,521 INFO L87 Difference]: Start difference. First operand 1412 states and 2206 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:07,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:07,560 INFO L93 Difference]: Finished difference Result 3601 states and 5663 transitions. [2024-11-18 15:09:07,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:09:07,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2024-11-18 15:09:07,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:07,570 INFO L225 Difference]: With dead ends: 3601 [2024-11-18 15:09:07,571 INFO L226 Difference]: Without dead ends: 2274 [2024-11-18 15:09:07,573 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 [2024-11-18 15:09:07,574 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 155 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:07,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 582 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:09:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2024-11-18 15:09:07,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2272. [2024-11-18 15:09:07,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 2271 states have (on average 1.5596653456627037) internal successors, (3542), 2271 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 3542 transitions. [2024-11-18 15:09:07,618 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 3542 transitions. Word has length 138 [2024-11-18 15:09:07,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:07,619 INFO L471 AbstractCegarLoop]: Abstraction has 2272 states and 3542 transitions. [2024-11-18 15:09:07,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 3542 transitions. [2024-11-18 15:09:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 15:09:07,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:07,625 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:07,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:09:07,625 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:07,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:07,626 INFO L85 PathProgramCache]: Analyzing trace with hash -300312724, now seen corresponding path program 1 times [2024-11-18 15:09:07,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:07,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109286500] [2024-11-18 15:09:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:07,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:07,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109286500] [2024-11-18 15:09:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109286500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:07,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:07,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 15:09:07,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262515406] [2024-11-18 15:09:07,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:07,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 15:09:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 15:09:07,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:09:07,926 INFO L87 Difference]: Start difference. First operand 2272 states and 3542 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:08,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:08,612 INFO L93 Difference]: Finished difference Result 24689 states and 38597 transitions. [2024-11-18 15:09:08,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 15:09:08,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2024-11-18 15:09:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:08,691 INFO L225 Difference]: With dead ends: 24689 [2024-11-18 15:09:08,691 INFO L226 Difference]: Without dead ends: 22508 [2024-11-18 15:09:08,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-11-18 15:09:08,706 INFO L432 NwaCegarLoop]: 631 mSDtfsCounter, 2801 mSDsluCounter, 4660 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 5291 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:08,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2801 Valid, 5291 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:09:08,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22508 states. [2024-11-18 15:09:08,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22508 to 4488. [2024-11-18 15:09:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 1.53599286828616) internal successors, (6892), 4487 states have internal predecessors, (6892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6892 transitions. [2024-11-18 15:09:09,018 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6892 transitions. Word has length 140 [2024-11-18 15:09:09,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:09,018 INFO L471 AbstractCegarLoop]: Abstraction has 4488 states and 6892 transitions. [2024-11-18 15:09:09,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6892 transitions. [2024-11-18 15:09:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 15:09:09,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:09,029 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:09,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:09:09,029 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:09,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2107826276, now seen corresponding path program 1 times [2024-11-18 15:09:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:09,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547122578] [2024-11-18 15:09:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:09,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:09,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:09,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547122578] [2024-11-18 15:09:09,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547122578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:09,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:09,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:09:09,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118205272] [2024-11-18 15:09:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:09,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:09:09,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:09:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:09:09,182 INFO L87 Difference]: Start difference. First operand 4488 states and 6892 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:09,265 INFO L93 Difference]: Finished difference Result 12513 states and 19228 transitions. [2024-11-18 15:09:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:09:09,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2024-11-18 15:09:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:09,293 INFO L225 Difference]: With dead ends: 12513 [2024-11-18 15:09:09,293 INFO L226 Difference]: Without dead ends: 8074 [2024-11-18 15:09:09,302 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 [2024-11-18 15:09:09,304 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 205 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:09,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 777 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:09:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2024-11-18 15:09:09,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 8072. [2024-11-18 15:09:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8072 states, 8071 states have (on average 1.5267005327716516) internal successors, (12322), 8071 states have internal predecessors, (12322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 12322 transitions. [2024-11-18 15:09:09,499 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 12322 transitions. Word has length 143 [2024-11-18 15:09:09,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:09,500 INFO L471 AbstractCegarLoop]: Abstraction has 8072 states and 12322 transitions. [2024-11-18 15:09:09,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:09,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 12322 transitions. [2024-11-18 15:09:09,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 15:09:09,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:09,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:09,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:09:09,519 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:09,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:09,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2102558318, now seen corresponding path program 1 times [2024-11-18 15:09:09,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:09,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855873426] [2024-11-18 15:09:09,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:09,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:09,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:09,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855873426] [2024-11-18 15:09:09,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855873426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:09,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:09,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:09:09,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420637065] [2024-11-18 15:09:09,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:09,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:09:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:09,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:09:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:09:09,725 INFO L87 Difference]: Start difference. First operand 8072 states and 12322 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:09,955 INFO L93 Difference]: Finished difference Result 18816 states and 28711 transitions. [2024-11-18 15:09:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:09:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2024-11-18 15:09:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:09,997 INFO L225 Difference]: With dead ends: 18816 [2024-11-18 15:09:09,997 INFO L226 Difference]: Without dead ends: 10827 [2024-11-18 15:09:10,009 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 [2024-11-18 15:09:10,010 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 223 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:10,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 516 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:09:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10827 states. [2024-11-18 15:09:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10827 to 10761. [2024-11-18 15:09:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10761 states, 10760 states have (on average 1.5021375464684015) internal successors, (16163), 10760 states have internal predecessors, (16163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10761 states to 10761 states and 16163 transitions. [2024-11-18 15:09:10,215 INFO L78 Accepts]: Start accepts. Automaton has 10761 states and 16163 transitions. Word has length 144 [2024-11-18 15:09:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:10,216 INFO L471 AbstractCegarLoop]: Abstraction has 10761 states and 16163 transitions. [2024-11-18 15:09:10,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 10761 states and 16163 transitions. [2024-11-18 15:09:10,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 15:09:10,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:10,238 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:10,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:09:10,239 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:10,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:10,239 INFO L85 PathProgramCache]: Analyzing trace with hash 840792049, now seen corresponding path program 1 times [2024-11-18 15:09:10,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:10,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752316519] [2024-11-18 15:09:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:10,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:10,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:10,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752316519] [2024-11-18 15:09:10,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752316519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:10,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:10,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 15:09:10,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45759032] [2024-11-18 15:09:10,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:10,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 15:09:10,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 15:09:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:09:10,795 INFO L87 Difference]: Start difference. First operand 10761 states and 16163 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:11,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:11,255 INFO L93 Difference]: Finished difference Result 21440 states and 32230 transitions. [2024-11-18 15:09:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:09:11,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2024-11-18 15:09:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:11,283 INFO L225 Difference]: With dead ends: 21440 [2024-11-18 15:09:11,284 INFO L226 Difference]: Without dead ends: 10763 [2024-11-18 15:09:11,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-18 15:09:11,300 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 1402 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:11,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 1389 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:09:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10763 states. [2024-11-18 15:09:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10763 to 10761. [2024-11-18 15:09:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10761 states, 10760 states have (on average 1.4871747211895912) internal successors, (16002), 10760 states have internal predecessors, (16002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10761 states to 10761 states and 16002 transitions. [2024-11-18 15:09:11,594 INFO L78 Accepts]: Start accepts. Automaton has 10761 states and 16002 transitions. Word has length 144 [2024-11-18 15:09:11,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:11,595 INFO L471 AbstractCegarLoop]: Abstraction has 10761 states and 16002 transitions. [2024-11-18 15:09:11,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 10761 states and 16002 transitions. [2024-11-18 15:09:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:09:11,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:11,619 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:11,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 15:09:11,620 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:11,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:11,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1097885333, now seen corresponding path program 1 times [2024-11-18 15:09:11,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:11,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111477221] [2024-11-18 15:09:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:11,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:11,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:11,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111477221] [2024-11-18 15:09:11,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111477221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:11,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:11,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:09:11,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147379381] [2024-11-18 15:09:11,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:11,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:09:11,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:11,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:09:11,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:09:11,761 INFO L87 Difference]: Start difference. First operand 10761 states and 16002 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:12,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:12,217 INFO L93 Difference]: Finished difference Result 30880 states and 45859 transitions. [2024-11-18 15:09:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:09:12,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-18 15:09:12,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:12,268 INFO L225 Difference]: With dead ends: 30880 [2024-11-18 15:09:12,269 INFO L226 Difference]: Without dead ends: 21346 [2024-11-18 15:09:12,289 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 [2024-11-18 15:09:12,291 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 228 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:12,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 390 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:09:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21346 states. [2024-11-18 15:09:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21346 to 21344. [2024-11-18 15:09:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21344 states, 21343 states have (on average 1.4790329381998781) internal successors, (31567), 21343 states have internal predecessors, (31567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21344 states to 21344 states and 31567 transitions. [2024-11-18 15:09:12,741 INFO L78 Accepts]: Start accepts. Automaton has 21344 states and 31567 transitions. Word has length 145 [2024-11-18 15:09:12,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:12,741 INFO L471 AbstractCegarLoop]: Abstraction has 21344 states and 31567 transitions. [2024-11-18 15:09:12,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:12,742 INFO L276 IsEmpty]: Start isEmpty. Operand 21344 states and 31567 transitions. [2024-11-18 15:09:12,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:09:12,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:12,789 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:12,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 15:09:12,789 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:12,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:12,790 INFO L85 PathProgramCache]: Analyzing trace with hash -501752442, now seen corresponding path program 1 times [2024-11-18 15:09:12,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:12,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94317762] [2024-11-18 15:09:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:12,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:12,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:12,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94317762] [2024-11-18 15:09:12,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94317762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:12,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:12,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:09:12,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835917748] [2024-11-18 15:09:12,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:12,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:09:12,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:12,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:09:12,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:09:12,894 INFO L87 Difference]: Start difference. First operand 21344 states and 31567 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:13,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:13,439 INFO L93 Difference]: Finished difference Result 61449 states and 90838 transitions. [2024-11-18 15:09:13,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:09:13,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-18 15:09:13,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:13,521 INFO L225 Difference]: With dead ends: 61449 [2024-11-18 15:09:13,522 INFO L226 Difference]: Without dead ends: 42431 [2024-11-18 15:09:13,552 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 [2024-11-18 15:09:13,553 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 228 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:13,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 394 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:09:13,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42431 states. [2024-11-18 15:09:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42431 to 42429. [2024-11-18 15:09:14,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42429 states, 42428 states have (on average 1.4724710097105684) internal successors, (62474), 42428 states have internal predecessors, (62474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42429 states to 42429 states and 62474 transitions. [2024-11-18 15:09:14,597 INFO L78 Accepts]: Start accepts. Automaton has 42429 states and 62474 transitions. Word has length 145 [2024-11-18 15:09:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:14,598 INFO L471 AbstractCegarLoop]: Abstraction has 42429 states and 62474 transitions. [2024-11-18 15:09:14,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 42429 states and 62474 transitions. [2024-11-18 15:09:14,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:09:14,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:14,669 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:14,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 15:09:14,669 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:14,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:14,670 INFO L85 PathProgramCache]: Analyzing trace with hash -591821183, now seen corresponding path program 1 times [2024-11-18 15:09:14,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:14,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358532739] [2024-11-18 15:09:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:14,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:15,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:15,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358532739] [2024-11-18 15:09:15,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358532739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:15,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:15,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 15:09:15,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127859442] [2024-11-18 15:09:15,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:15,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 15:09:15,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:15,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 15:09:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:09:15,360 INFO L87 Difference]: Start difference. First operand 42429 states and 62474 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:16,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:16,768 INFO L93 Difference]: Finished difference Result 260647 states and 383605 transitions. [2024-11-18 15:09:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:09:16,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-18 15:09:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:17,512 INFO L225 Difference]: With dead ends: 260647 [2024-11-18 15:09:17,513 INFO L226 Difference]: Without dead ends: 226661 [2024-11-18 15:09:17,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:09:17,582 INFO L432 NwaCegarLoop]: 658 mSDtfsCounter, 2245 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2245 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:17,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2245 Valid, 2043 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:09:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226661 states. [2024-11-18 15:09:19,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226661 to 78925. [2024-11-18 15:09:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78925 states, 78924 states have (on average 1.4650296487760377) internal successors, (115626), 78924 states have internal predecessors, (115626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78925 states to 78925 states and 115626 transitions. [2024-11-18 15:09:20,209 INFO L78 Accepts]: Start accepts. Automaton has 78925 states and 115626 transitions. Word has length 145 [2024-11-18 15:09:20,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:20,209 INFO L471 AbstractCegarLoop]: Abstraction has 78925 states and 115626 transitions. [2024-11-18 15:09:20,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:20,210 INFO L276 IsEmpty]: Start isEmpty. Operand 78925 states and 115626 transitions. [2024-11-18 15:09:20,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:09:20,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:20,365 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:20,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 15:09:20,365 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:20,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:20,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1386087233, now seen corresponding path program 1 times [2024-11-18 15:09:20,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:20,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381793419] [2024-11-18 15:09:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:20,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:20,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:20,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381793419] [2024-11-18 15:09:20,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381793419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:20,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:20,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 15:09:20,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476709218] [2024-11-18 15:09:20,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:20,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 15:09:20,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:20,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 15:09:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:09:20,690 INFO L87 Difference]: Start difference. First operand 78925 states and 115626 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:22,114 INFO L93 Difference]: Finished difference Result 296239 states and 435517 transitions. [2024-11-18 15:09:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:09:22,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-18 15:09:22,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:23,316 INFO L225 Difference]: With dead ends: 296239 [2024-11-18 15:09:23,316 INFO L226 Difference]: Without dead ends: 262253 [2024-11-18 15:09:23,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:09:23,470 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 2367 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2367 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:23,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2367 Valid, 2013 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:09:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262253 states. [2024-11-18 15:09:26,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262253 to 131461. [2024-11-18 15:09:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131461 states, 131460 states have (on average 1.4582838886353264) internal successors, (191706), 131460 states have internal predecessors, (191706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131461 states to 131461 states and 191706 transitions. [2024-11-18 15:09:26,464 INFO L78 Accepts]: Start accepts. Automaton has 131461 states and 191706 transitions. Word has length 145 [2024-11-18 15:09:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:26,465 INFO L471 AbstractCegarLoop]: Abstraction has 131461 states and 191706 transitions. [2024-11-18 15:09:26,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 131461 states and 191706 transitions. [2024-11-18 15:09:26,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:09:26,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:26,568 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:26,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 15:09:26,569 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:26,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:26,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1229716121, now seen corresponding path program 1 times [2024-11-18 15:09:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:26,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975611575] [2024-11-18 15:09:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:26,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:26,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:26,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975611575] [2024-11-18 15:09:26,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975611575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:26,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:26,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 15:09:26,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186047703] [2024-11-18 15:09:26,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:26,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 15:09:26,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 15:09:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:09:26,867 INFO L87 Difference]: Start difference. First operand 131461 states and 191706 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:28,675 INFO L93 Difference]: Finished difference Result 330703 states and 485725 transitions. [2024-11-18 15:09:28,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:09:28,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-18 15:09:28,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:29,899 INFO L225 Difference]: With dead ends: 330703 [2024-11-18 15:09:29,900 INFO L226 Difference]: Without dead ends: 296717 [2024-11-18 15:09:29,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:09:29,969 INFO L432 NwaCegarLoop]: 554 mSDtfsCounter, 2145 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:29,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 2264 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 15:09:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296717 states. [2024-11-18 15:09:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296717 to 167161. [2024-11-18 15:09:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167161 states, 167160 states have (on average 1.4582316343622876) internal successors, (243758), 167160 states have internal predecessors, (243758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167161 states to 167161 states and 243758 transitions. [2024-11-18 15:09:33,612 INFO L78 Accepts]: Start accepts. Automaton has 167161 states and 243758 transitions. Word has length 145 [2024-11-18 15:09:33,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:33,615 INFO L471 AbstractCegarLoop]: Abstraction has 167161 states and 243758 transitions. [2024-11-18 15:09:33,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand 167161 states and 243758 transitions. [2024-11-18 15:09:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:09:33,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:33,782 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:33,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 15:09:33,783 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:33,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:33,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1299911355, now seen corresponding path program 1 times [2024-11-18 15:09:33,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:33,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141830731] [2024-11-18 15:09:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:34,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141830731] [2024-11-18 15:09:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141830731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:34,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:34,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 15:09:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399992918] [2024-11-18 15:09:34,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:34,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 15:09:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 15:09:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:09:34,802 INFO L87 Difference]: Start difference. First operand 167161 states and 243758 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:36,162 INFO L93 Difference]: Finished difference Result 365823 states and 536909 transitions. [2024-11-18 15:09:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:09:36,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-18 15:09:36,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:37,614 INFO L225 Difference]: With dead ends: 365823 [2024-11-18 15:09:37,614 INFO L226 Difference]: Without dead ends: 331837 [2024-11-18 15:09:37,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:09:37,730 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 2144 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:37,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 2501 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:09:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331837 states. [2024-11-18 15:09:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331837 to 203113. [2024-11-18 15:09:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203113 states, 203112 states have (on average 1.4584564181338375) internal successors, (296230), 203112 states have internal predecessors, (296230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203113 states to 203113 states and 296230 transitions. [2024-11-18 15:09:42,713 INFO L78 Accepts]: Start accepts. Automaton has 203113 states and 296230 transitions. Word has length 145 [2024-11-18 15:09:42,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:42,714 INFO L471 AbstractCegarLoop]: Abstraction has 203113 states and 296230 transitions. [2024-11-18 15:09:42,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:42,714 INFO L276 IsEmpty]: Start isEmpty. Operand 203113 states and 296230 transitions. [2024-11-18 15:09:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:09:42,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:42,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:42,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 15:09:42,968 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:42,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:42,969 INFO L85 PathProgramCache]: Analyzing trace with hash 589477583, now seen corresponding path program 1 times [2024-11-18 15:09:42,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:42,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039974363] [2024-11-18 15:09:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:42,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:44,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039974363] [2024-11-18 15:09:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039974363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:44,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:44,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 15:09:44,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537576492] [2024-11-18 15:09:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:44,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 15:09:44,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 15:09:44,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:09:44,483 INFO L87 Difference]: Start difference. First operand 203113 states and 296230 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:45,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:45,873 INFO L93 Difference]: Finished difference Result 401723 states and 589305 transitions. [2024-11-18 15:09:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:09:45,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-18 15:09:45,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:47,808 INFO L225 Difference]: With dead ends: 401723 [2024-11-18 15:09:47,808 INFO L226 Difference]: Without dead ends: 367737 [2024-11-18 15:09:47,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:09:47,909 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 2331 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2331 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:47,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2331 Valid, 2723 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:09:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367737 states. [2024-11-18 15:09:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367737 to 239209. [2024-11-18 15:09:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239209 states, 239208 states have (on average 1.4587388381659476) internal successors, (348942), 239208 states have internal predecessors, (348942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239209 states to 239209 states and 348942 transitions. [2024-11-18 15:09:53,644 INFO L78 Accepts]: Start accepts. Automaton has 239209 states and 348942 transitions. Word has length 145 [2024-11-18 15:09:53,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:09:53,644 INFO L471 AbstractCegarLoop]: Abstraction has 239209 states and 348942 transitions. [2024-11-18 15:09:53,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:53,645 INFO L276 IsEmpty]: Start isEmpty. Operand 239209 states and 348942 transitions. [2024-11-18 15:09:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 15:09:54,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:09:54,008 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:09:54,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 15:09:54,009 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:09:54,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:09:54,009 INFO L85 PathProgramCache]: Analyzing trace with hash 82881477, now seen corresponding path program 1 times [2024-11-18 15:09:54,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:09:54,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034045328] [2024-11-18 15:09:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:09:54,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:09:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:09:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:09:54,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:09:54,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034045328] [2024-11-18 15:09:54,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034045328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:09:54,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:09:54,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 15:09:54,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491368720] [2024-11-18 15:09:54,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:09:54,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 15:09:54,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:09:54,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 15:09:54,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:09:54,335 INFO L87 Difference]: Start difference. First operand 239209 states and 348942 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:09:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:09:56,705 INFO L93 Difference]: Finished difference Result 416111 states and 611077 transitions. [2024-11-18 15:09:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:09:56,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2024-11-18 15:09:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:09:57,665 INFO L225 Difference]: With dead ends: 416111 [2024-11-18 15:09:57,666 INFO L226 Difference]: Without dead ends: 393069 [2024-11-18 15:09:57,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:09:57,812 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 2348 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:09:57,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 2258 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:09:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393069 states. [2024-11-18 15:10:02,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393069 to 264541. [2024-11-18 15:10:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264541 states, 264540 states have (on average 1.4611098510622211) internal successors, (386522), 264540 states have internal predecessors, (386522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:10:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264541 states to 264541 states and 386522 transitions. [2024-11-18 15:10:03,223 INFO L78 Accepts]: Start accepts. Automaton has 264541 states and 386522 transitions. Word has length 146 [2024-11-18 15:10:03,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:10:03,224 INFO L471 AbstractCegarLoop]: Abstraction has 264541 states and 386522 transitions. [2024-11-18 15:10:03,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:10:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand 264541 states and 386522 transitions. [2024-11-18 15:10:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 15:10:03,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:10:03,479 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:10:03,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 15:10:03,479 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:10:03,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:10:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1551784817, now seen corresponding path program 1 times [2024-11-18 15:10:03,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:10:03,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841760057] [2024-11-18 15:10:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:10:03,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:10:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:10:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:10:03,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:10:03,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841760057] [2024-11-18 15:10:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841760057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:10:03,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:10:03,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:10:03,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444069278] [2024-11-18 15:10:03,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:10:03,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:10:03,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:10:03,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:10:03,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:10:03,652 INFO L87 Difference]: Start difference. First operand 264541 states and 386522 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)