./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/systemc/token_ring.13.cil-2.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 0dcd4461cca64e9ab41b6ad7ff4c6eaa4177bddcca1c612fa1571b77ac664a95 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:44:39,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:44:39,255 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:44:39,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:44:39,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:44:39,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:44:39,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:44:39,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:44:39,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:44:39,275 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:44:39,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:44:39,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:44:39,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:44:39,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:44:39,277 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:44:39,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:44:39,277 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:44:39,277 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:44:39,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:44:39,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:44:39,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:44:39,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:44:39,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:44:39,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:44:39,278 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:44:39,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:44:39,278 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:44:39,278 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:44:39,278 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:44:39,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:44:39,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:44:39,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:44:39,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:44:39,279 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 0dcd4461cca64e9ab41b6ad7ff4c6eaa4177bddcca1c612fa1571b77ac664a95 [2025-03-03 14:44:39,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:44:39,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:44:39,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:44:39,523 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:44:39,523 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:44:39,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2025-03-03 14:44:40,676 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61755ed63/47c48f744bfe4d068b11d9eab73cdd12/FLAGf7dff3b2a [2025-03-03 14:44:40,993 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:44:40,994 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2025-03-03 14:44:41,012 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61755ed63/47c48f744bfe4d068b11d9eab73cdd12/FLAGf7dff3b2a [2025-03-03 14:44:41,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61755ed63/47c48f744bfe4d068b11d9eab73cdd12 [2025-03-03 14:44:41,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:44:41,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:44:41,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:44:41,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:44:41,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:44:41,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b2ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41, skipping insertion in model container [2025-03-03 14:44:41,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,281 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:44:41,380 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/systemc/token_ring.13.cil-2.c[671,684] [2025-03-03 14:44:41,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:44:41,481 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:44:41,488 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/systemc/token_ring.13.cil-2.c[671,684] [2025-03-03 14:44:41,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:44:41,562 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:44:41,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41 WrapperNode [2025-03-03 14:44:41,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:44:41,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:44:41,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:44:41,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:44:41,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,610 INFO L138 Inliner]: procedures = 54, calls = 70, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 891 [2025-03-03 14:44:41,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:44:41,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:44:41,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:44:41,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:44:41,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,622 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,638 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]. [2025-03-03 14:44:41,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,652 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:44:41,665 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:44:41,665 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:44:41,665 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:44:41,666 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (1/1) ... [2025-03-03 14:44:41,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:44:41,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:44:41,702 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) [2025-03-03 14:44:41,704 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 [2025-03-03 14:44:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:44:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-03 14:44:41,719 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-03 14:44:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-03 14:44:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-03 14:44:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-03 14:44:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-03 14:44:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-03 14:44:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-03 14:44:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-03 14:44:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-03 14:44:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-03 14:44:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-03 14:44:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:44:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:44:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:44:41,806 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:44:41,808 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:44:42,556 INFO L? ?]: Removed 103 outVars from TransFormulas that were not future-live. [2025-03-03 14:44:42,556 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:44:42,575 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:44:42,575 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:44:42,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:44:42 BoogieIcfgContainer [2025-03-03 14:44:42,576 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:44:42,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:44:42,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:44:42,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:44:42,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:44:41" (1/3) ... [2025-03-03 14:44:42,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba4ebfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:44:42, skipping insertion in model container [2025-03-03 14:44:42,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:44:41" (2/3) ... [2025-03-03 14:44:42,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba4ebfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:44:42, skipping insertion in model container [2025-03-03 14:44:42,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:44:42" (3/3) ... [2025-03-03 14:44:42,584 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-2.c [2025-03-03 14:44:42,594 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:44:42,596 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.13.cil-2.c that has 7 procedures, 435 locations, 1 initial locations, 16 loop locations, and 1 error locations. [2025-03-03 14:44:42,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:44:42,656 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;@2ab5e171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:44:42,657 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:44:42,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 435 states, 400 states have (on average 1.58) internal successors, (632), 402 states have internal predecessors, (632), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-03 14:44:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:44:42,674 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:42,674 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:42,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:42,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:42,678 INFO L85 PathProgramCache]: Analyzing trace with hash -719649035, now seen corresponding path program 1 times [2025-03-03 14:44:42,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:42,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805483359] [2025-03-03 14:44:42,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:42,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:42,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:44:42,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:44:42,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:42,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:43,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:43,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805483359] [2025-03-03 14:44:43,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805483359] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:43,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:43,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 14:44:43,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881059126] [2025-03-03 14:44:43,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:43,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:44:43,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:43,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:44:43,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:44:43,273 INFO L87 Difference]: Start difference. First operand has 435 states, 400 states have (on average 1.58) internal successors, (632), 402 states have internal predecessors, (632), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:43,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:43,990 INFO L93 Difference]: Finished difference Result 1313 states and 2088 transitions. [2025-03-03 14:44:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:44:43,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2025-03-03 14:44:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:44,007 INFO L225 Difference]: With dead ends: 1313 [2025-03-03 14:44:44,008 INFO L226 Difference]: Without dead ends: 891 [2025-03-03 14:44:44,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:44,019 INFO L435 NwaCegarLoop]: 530 mSDtfsCounter, 1269 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:44,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 1898 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 14:44:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2025-03-03 14:44:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 860. [2025-03-03 14:44:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 797 states have (on average 1.5495608531994982) internal successors, (1235), 799 states have internal predecessors, (1235), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-03 14:44:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1334 transitions. [2025-03-03 14:44:44,089 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1334 transitions. Word has length 188 [2025-03-03 14:44:44,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:44,090 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1334 transitions. [2025-03-03 14:44:44,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:44,090 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1334 transitions. [2025-03-03 14:44:44,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:44:44,094 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:44,094 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:44,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 14:44:44,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:44,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:44,096 INFO L85 PathProgramCache]: Analyzing trace with hash 289665207, now seen corresponding path program 1 times [2025-03-03 14:44:44,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:44,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960642786] [2025-03-03 14:44:44,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:44,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:44,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:44:44,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:44:44,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:44,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:44,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:44,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960642786] [2025-03-03 14:44:44,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960642786] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:44,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:44,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:44,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320484332] [2025-03-03 14:44:44,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:44,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:44,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:44,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:44,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:44,346 INFO L87 Difference]: Start difference. First operand 860 states and 1334 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:45,119 INFO L93 Difference]: Finished difference Result 2238 states and 3511 transitions. [2025-03-03 14:44:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:45,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2025-03-03 14:44:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:45,127 INFO L225 Difference]: With dead ends: 2238 [2025-03-03 14:44:45,127 INFO L226 Difference]: Without dead ends: 1399 [2025-03-03 14:44:45,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:44:45,130 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 1274 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:45,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 3639 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 14:44:45,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2025-03-03 14:44:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1260. [2025-03-03 14:44:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1168 states have (on average 1.5410958904109588) internal successors, (1800), 1171 states have internal predecessors, (1800), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (75), 72 states have call predecessors, (75), 71 states have call successors, (75) [2025-03-03 14:44:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1946 transitions. [2025-03-03 14:44:45,183 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1946 transitions. Word has length 188 [2025-03-03 14:44:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:45,184 INFO L471 AbstractCegarLoop]: Abstraction has 1260 states and 1946 transitions. [2025-03-03 14:44:45,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1946 transitions. [2025-03-03 14:44:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:44:45,187 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:45,187 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:45,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 14:44:45,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:45,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:45,188 INFO L85 PathProgramCache]: Analyzing trace with hash 538943608, now seen corresponding path program 1 times [2025-03-03 14:44:45,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:45,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372831681] [2025-03-03 14:44:45,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:45,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:45,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:44:45,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:44:45,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:45,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:45,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:45,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372831681] [2025-03-03 14:44:45,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372831681] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:45,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:45,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:45,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808787220] [2025-03-03 14:44:45,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:45,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:45,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:45,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:45,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:45,430 INFO L87 Difference]: Start difference. First operand 1260 states and 1946 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:46,242 INFO L93 Difference]: Finished difference Result 3511 states and 5492 transitions. [2025-03-03 14:44:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:46,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2025-03-03 14:44:46,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:46,251 INFO L225 Difference]: With dead ends: 3511 [2025-03-03 14:44:46,251 INFO L226 Difference]: Without dead ends: 2272 [2025-03-03 14:44:46,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:44:46,254 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 1269 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:46,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 3623 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 14:44:46,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2025-03-03 14:44:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2111. [2025-03-03 14:44:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1959 states have (on average 1.5441551812149055) internal successors, (3025), 1966 states have internal predecessors, (3025), 115 states have call successors, (115), 30 states have call predecessors, (115), 36 states have return successors, (131), 118 states have call predecessors, (131), 115 states have call successors, (131) [2025-03-03 14:44:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3271 transitions. [2025-03-03 14:44:46,320 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3271 transitions. Word has length 188 [2025-03-03 14:44:46,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:46,320 INFO L471 AbstractCegarLoop]: Abstraction has 2111 states and 3271 transitions. [2025-03-03 14:44:46,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:46,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3271 transitions. [2025-03-03 14:44:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:44:46,322 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:46,322 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:46,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 14:44:46,323 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:46,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash 824079511, now seen corresponding path program 1 times [2025-03-03 14:44:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:46,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519390541] [2025-03-03 14:44:46,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:46,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:46,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:44:46,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:44:46,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:46,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:46,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:46,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519390541] [2025-03-03 14:44:46,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519390541] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:46,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:46,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:46,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278021095] [2025-03-03 14:44:46,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:46,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:46,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:46,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:46,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:46,482 INFO L87 Difference]: Start difference. First operand 2111 states and 3271 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:47,274 INFO L93 Difference]: Finished difference Result 6256 states and 9855 transitions. [2025-03-03 14:44:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:47,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2025-03-03 14:44:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:47,291 INFO L225 Difference]: With dead ends: 6256 [2025-03-03 14:44:47,291 INFO L226 Difference]: Without dead ends: 4166 [2025-03-03 14:44:47,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:44:47,297 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 1264 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:47,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 3611 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 14:44:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2025-03-03 14:44:47,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 3960. [2025-03-03 14:44:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3960 states, 3682 states have (on average 1.5613796849538295) internal successors, (5749), 3703 states have internal predecessors, (5749), 203 states have call successors, (203), 54 states have call predecessors, (203), 74 states have return successors, (267), 210 states have call predecessors, (267), 203 states have call successors, (267) [2025-03-03 14:44:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 6219 transitions. [2025-03-03 14:44:47,430 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 6219 transitions. Word has length 188 [2025-03-03 14:44:47,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:47,430 INFO L471 AbstractCegarLoop]: Abstraction has 3960 states and 6219 transitions. [2025-03-03 14:44:47,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 6219 transitions. [2025-03-03 14:44:47,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:44:47,433 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:47,433 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:47,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 14:44:47,433 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:47,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:47,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1526014104, now seen corresponding path program 1 times [2025-03-03 14:44:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:47,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874770776] [2025-03-03 14:44:47,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:47,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:44:47,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:44:47,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:47,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:47,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:47,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874770776] [2025-03-03 14:44:47,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874770776] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:47,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:47,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:47,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108036915] [2025-03-03 14:44:47,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:47,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:47,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:47,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:47,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:47,573 INFO L87 Difference]: Start difference. First operand 3960 states and 6219 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:48,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:48,437 INFO L93 Difference]: Finished difference Result 12315 states and 19761 transitions. [2025-03-03 14:44:48,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:48,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2025-03-03 14:44:48,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:48,472 INFO L225 Difference]: With dead ends: 12315 [2025-03-03 14:44:48,472 INFO L226 Difference]: Without dead ends: 8376 [2025-03-03 14:44:48,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:44:48,484 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 1259 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:48,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 3599 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 14:44:48,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2025-03-03 14:44:48,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 8081. [2025-03-03 14:44:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8081 states, 7533 states have (on average 1.5909996017522898) internal successors, (11985), 7600 states have internal predecessors, (11985), 379 states have call successors, (379), 102 states have call predecessors, (379), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-03 14:44:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 12999 transitions. [2025-03-03 14:44:48,815 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 12999 transitions. Word has length 188 [2025-03-03 14:44:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:48,815 INFO L471 AbstractCegarLoop]: Abstraction has 8081 states and 12999 transitions. [2025-03-03 14:44:48,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 12999 transitions. [2025-03-03 14:44:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:44:48,820 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:48,820 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:48,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 14:44:48,820 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:48,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1133015159, now seen corresponding path program 1 times [2025-03-03 14:44:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:48,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449552675] [2025-03-03 14:44:48,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:48,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:44:48,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:44:48,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:48,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:48,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:48,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449552675] [2025-03-03 14:44:48,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449552675] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:48,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:48,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:48,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202287113] [2025-03-03 14:44:48,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:48,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:48,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:48,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:48,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:48,966 INFO L87 Difference]: Start difference. First operand 8081 states and 12999 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:50,029 INFO L93 Difference]: Finished difference Result 26066 states and 43091 transitions. [2025-03-03 14:44:50,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:50,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2025-03-03 14:44:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:50,118 INFO L225 Difference]: With dead ends: 26066 [2025-03-03 14:44:50,119 INFO L226 Difference]: Without dead ends: 18006 [2025-03-03 14:44:50,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:44:50,147 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 1254 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 3587 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:50,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 3587 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 14:44:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18006 states. [2025-03-03 14:44:50,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18006 to 17538. [2025-03-03 14:44:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17538 states, 16396 states have (on average 1.6294828006830935) internal successors, (26717), 16609 states have internal predecessors, (26717), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-03 14:44:50,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17538 states to 17538 states and 29203 transitions. [2025-03-03 14:44:50,821 INFO L78 Accepts]: Start accepts. Automaton has 17538 states and 29203 transitions. Word has length 188 [2025-03-03 14:44:50,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:50,822 INFO L471 AbstractCegarLoop]: Abstraction has 17538 states and 29203 transitions. [2025-03-03 14:44:50,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:50,822 INFO L276 IsEmpty]: Start isEmpty. Operand 17538 states and 29203 transitions. [2025-03-03 14:44:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:44:50,830 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:50,830 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:50,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 14:44:50,830 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:50,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:50,831 INFO L85 PathProgramCache]: Analyzing trace with hash -680777544, now seen corresponding path program 1 times [2025-03-03 14:44:50,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:50,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241017848] [2025-03-03 14:44:50,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:50,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:50,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:44:50,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:44:50,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:50,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:51,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:51,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241017848] [2025-03-03 14:44:51,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241017848] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:51,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:51,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:51,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576119380] [2025-03-03 14:44:51,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:51,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:51,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:51,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:51,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:51,009 INFO L87 Difference]: Start difference. First operand 17538 states and 29203 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:52,315 INFO L93 Difference]: Finished difference Result 58253 states and 100369 transitions. [2025-03-03 14:44:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2025-03-03 14:44:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:52,594 INFO L225 Difference]: With dead ends: 58253 [2025-03-03 14:44:52,594 INFO L226 Difference]: Without dead ends: 40736 [2025-03-03 14:44:52,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:44:52,648 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 1249 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 3575 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:52,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 3575 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 14:44:52,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40736 states. [2025-03-03 14:44:53,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40736 to 39935. [2025-03-03 14:44:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39935 states, 37443 states have (on average 1.6730764094757364) internal successors, (62645), 38110 states have internal predecessors, (62645), 1435 states have call successors, (1435), 390 states have call predecessors, (1435), 1056 states have return successors, (5531), 1498 states have call predecessors, (5531), 1435 states have call successors, (5531) [2025-03-03 14:44:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39935 states to 39935 states and 69611 transitions. [2025-03-03 14:44:54,269 INFO L78 Accepts]: Start accepts. Automaton has 39935 states and 69611 transitions. Word has length 188 [2025-03-03 14:44:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:44:54,269 INFO L471 AbstractCegarLoop]: Abstraction has 39935 states and 69611 transitions. [2025-03-03 14:44:54,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 39935 states and 69611 transitions. [2025-03-03 14:44:54,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:44:54,282 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:44:54,282 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:44:54,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 14:44:54,283 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:44:54,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:44:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash 369091671, now seen corresponding path program 1 times [2025-03-03 14:44:54,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:44:54,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172408520] [2025-03-03 14:44:54,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:44:54,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:44:54,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:44:54,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:44:54,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:44:54,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:44:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:44:54,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:44:54,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172408520] [2025-03-03 14:44:54,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172408520] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:44:54,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:44:54,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:44:54,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748520360] [2025-03-03 14:44:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:44:54,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:44:54,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:44:54,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:44:54,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:44:54,421 INFO L87 Difference]: Start difference. First operand 39935 states and 69611 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:44:56,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:44:56,494 INFO L93 Difference]: Finished difference Result 136044 states and 247447 transitions. [2025-03-03 14:44:56,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:44:56,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2025-03-03 14:44:56,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:44:56,923 INFO L225 Difference]: With dead ends: 136044 [2025-03-03 14:44:56,923 INFO L226 Difference]: Without dead ends: 96130 [2025-03-03 14:44:57,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:44:57,032 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 1244 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 14:44:57,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 3563 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 14:44:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96130 states. [2025-03-03 14:44:59,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96130 to 94692. [2025-03-03 14:44:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94692 states, 89014 states have (on average 1.7181229918889163) internal successors, (152937), 91075 states have internal predecessors, (152937), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 2834 states have return successors, (19227), 2970 states have call predecessors, (19227), 2843 states have call successors, (19227) [2025-03-03 14:45:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94692 states to 94692 states and 175007 transitions. [2025-03-03 14:45:00,229 INFO L78 Accepts]: Start accepts. Automaton has 94692 states and 175007 transitions. Word has length 188 [2025-03-03 14:45:00,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:45:00,230 INFO L471 AbstractCegarLoop]: Abstraction has 94692 states and 175007 transitions. [2025-03-03 14:45:00,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:45:00,233 INFO L276 IsEmpty]: Start isEmpty. Operand 94692 states and 175007 transitions. [2025-03-03 14:45:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:45:00,260 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:45:00,260 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:45:00,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 14:45:00,261 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:45:00,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:45:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash 541505752, now seen corresponding path program 1 times [2025-03-03 14:45:00,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:45:00,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095883859] [2025-03-03 14:45:00,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:45:00,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:45:00,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:45:00,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:45:00,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:45:00,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:45:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:45:00,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:45:00,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095883859] [2025-03-03 14:45:00,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095883859] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:45:00,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:45:00,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 14:45:00,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838297111] [2025-03-03 14:45:00,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:45:00,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:45:00,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:45:00,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:45:00,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:45:00,443 INFO L87 Difference]: Start difference. First operand 94692 states and 175007 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:45:04,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:45:04,053 INFO L93 Difference]: Finished difference Result 230954 states and 443236 transitions. [2025-03-03 14:45:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:45:04,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2025-03-03 14:45:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:45:04,847 INFO L225 Difference]: With dead ends: 230954 [2025-03-03 14:45:04,848 INFO L226 Difference]: Without dead ends: 136283 [2025-03-03 14:45:05,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:45:05,010 INFO L435 NwaCegarLoop]: 493 mSDtfsCounter, 892 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:45:05,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1314 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:45:05,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136283 states. [2025-03-03 14:45:09,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136283 to 94692. [2025-03-03 14:45:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94692 states, 89014 states have (on average 1.7166737816523243) internal successors, (152808), 91075 states have internal predecessors, (152808), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 2834 states have return successors, (19227), 2970 states have call predecessors, (19227), 2843 states have call successors, (19227) [2025-03-03 14:45:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94692 states to 94692 states and 174878 transitions. [2025-03-03 14:45:10,030 INFO L78 Accepts]: Start accepts. Automaton has 94692 states and 174878 transitions. Word has length 188 [2025-03-03 14:45:10,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:45:10,030 INFO L471 AbstractCegarLoop]: Abstraction has 94692 states and 174878 transitions. [2025-03-03 14:45:10,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:45:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 94692 states and 174878 transitions. [2025-03-03 14:45:10,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:45:10,055 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:45:10,055 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:45:10,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 14:45:10,056 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:45:10,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:45:10,056 INFO L85 PathProgramCache]: Analyzing trace with hash -343230055, now seen corresponding path program 1 times [2025-03-03 14:45:10,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:45:10,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977539604] [2025-03-03 14:45:10,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:45:10,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:45:10,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:45:10,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:45:10,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:45:10,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:45:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:45:10,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:45:10,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977539604] [2025-03-03 14:45:10,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977539604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:45:10,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:45:10,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:45:10,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416187007] [2025-03-03 14:45:10,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:45:10,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:45:10,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:45:10,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:45:10,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:45:10,204 INFO L87 Difference]: Start difference. First operand 94692 states and 174878 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 14:45:15,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:45:15,996 INFO L93 Difference]: Finished difference Result 325323 states and 633402 transitions. [2025-03-03 14:45:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:45:15,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2025-03-03 14:45:15,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:45:17,273 INFO L225 Difference]: With dead ends: 325323 [2025-03-03 14:45:17,273 INFO L226 Difference]: Without dead ends: 230652