./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.04.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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/transmitter.04.cil.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 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:03:49,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:03:49,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:03:49,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:03:49,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:03:49,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:03:49,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:03:49,579 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:03:49,580 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:03:49,580 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:03:49,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:03:49,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:03:49,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:03:49,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:03:49,580 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:03:49,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:03:49,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:03:49,581 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:03:49,582 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:03:49,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:03:49,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:03:49,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:03:49,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:03:49,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:03:49,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:03:49,582 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:03:49,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:03:49,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:03:49,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:03:49,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:03:49,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:03:49,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:03:49,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:03:49,583 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 -> 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa [2025-03-16 19:03:49,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:03:49,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:03:49,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:03:49,816 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:03:49,816 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:03:49,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.04.cil.c [2025-03-16 19:03:50,951 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/389d8040d/7ba39041fd244607add1259ad9034866/FLAG087a3d71f [2025-03-16 19:03:51,226 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:03:51,230 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.04.cil.c [2025-03-16 19:03:51,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/389d8040d/7ba39041fd244607add1259ad9034866/FLAG087a3d71f [2025-03-16 19:03:51,515 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/389d8040d/7ba39041fd244607add1259ad9034866 [2025-03-16 19:03:51,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:03:51,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:03:51,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:03:51,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:03:51,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:03:51,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b07ac3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51, skipping insertion in model container [2025-03-16 19:03:51,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,546 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:03:51,634 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/transmitter.04.cil.c[706,719] [2025-03-16 19:03:51,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:03:51,690 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:03:51,699 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/transmitter.04.cil.c[706,719] [2025-03-16 19:03:51,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:03:51,734 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:03:51,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51 WrapperNode [2025-03-16 19:03:51,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:03:51,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:03:51,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:03:51,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:03:51,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,763 INFO L138 Inliner]: procedures = 36, calls = 42, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 363 [2025-03-16 19:03:51,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:03:51,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:03:51,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:03:51,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:03:51,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,773 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,781 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]. [2025-03-16 19:03:51,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,786 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:03:51,792 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:03:51,792 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:03:51,792 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:03:51,793 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (1/1) ... [2025-03-16 19:03:51,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:03:51,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:03:51,821 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) [2025-03-16 19:03:51,823 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 [2025-03-16 19:03:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:03:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:03:51,838 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:03:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:03:51,838 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:03:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:03:51,838 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:03:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:03:51,838 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:03:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:03:51,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:03:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:03:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:03:51,839 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:03:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:03:51,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:03:51,891 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:03:51,893 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:03:52,215 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2025-03-16 19:03:52,216 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:03:52,224 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:03:52,224 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:03:52,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:03:52 BoogieIcfgContainer [2025-03-16 19:03:52,225 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:03:52,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:03:52,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:03:52,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:03:52,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:03:51" (1/3) ... [2025-03-16 19:03:52,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504d11c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:03:52, skipping insertion in model container [2025-03-16 19:03:52,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:03:51" (2/3) ... [2025-03-16 19:03:52,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504d11c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:03:52, skipping insertion in model container [2025-03-16 19:03:52,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:03:52" (3/3) ... [2025-03-16 19:03:52,233 INFO L128 eAbstractionObserver]: Analyzing ICFG transmitter.04.cil.c [2025-03-16 19:03:52,244 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:03:52,246 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG transmitter.04.cil.c that has 7 procedures, 164 locations, 1 initial locations, 8 loop locations, and 1 error locations. [2025-03-16 19:03:52,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:03:52,308 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;@4ef799cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:03:52,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 19:03:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 140 states have (on average 1.6) internal successors, (224), 141 states have internal predecessors, (224), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-16 19:03:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:03:52,323 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:03:52,323 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] [2025-03-16 19:03:52,324 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:03:52,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:03:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1424620083, now seen corresponding path program 1 times [2025-03-16 19:03:52,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:03:52,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775826756] [2025-03-16 19:03:52,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:03:52,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:03:52,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:03:52,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:03:52,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:03:52,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:03:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:03:52,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:03:52,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775826756] [2025-03-16 19:03:52,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775826756] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:03:52,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:03:52,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:03:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033931853] [2025-03-16 19:03:52,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:03:52,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:03:52,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:03:52,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:03:52,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:03:52,717 INFO L87 Difference]: Start difference. First operand has 164 states, 140 states have (on average 1.6) internal successors, (224), 141 states have internal predecessors, (224), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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) [2025-03-16 19:03:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:03:53,078 INFO L93 Difference]: Finished difference Result 487 states and 778 transitions. [2025-03-16 19:03:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:03:53,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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 82 [2025-03-16 19:03:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:03:53,093 INFO L225 Difference]: With dead ends: 487 [2025-03-16 19:03:53,093 INFO L226 Difference]: Without dead ends: 327 [2025-03-16 19:03:53,096 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 [2025-03-16 19:03:53,099 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 435 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:03:53,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 672 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:03:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2025-03-16 19:03:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 314. [2025-03-16 19:03:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 271 states have (on average 1.5498154981549817) internal successors, (420), 273 states have internal predecessors, (420), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-03-16 19:03:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 479 transitions. [2025-03-16 19:03:53,150 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 479 transitions. Word has length 82 [2025-03-16 19:03:53,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:03:53,150 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 479 transitions. [2025-03-16 19:03:53,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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) [2025-03-16 19:03:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 479 transitions. [2025-03-16 19:03:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:03:53,154 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:03:53,154 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] [2025-03-16 19:03:53,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:03:53,155 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:03:53,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:03:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash -459075061, now seen corresponding path program 1 times [2025-03-16 19:03:53,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:03:53,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70566628] [2025-03-16 19:03:53,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:03:53,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:03:53,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:03:53,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:03:53,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:03:53,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:03:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:03:53,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:03:53,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70566628] [2025-03-16 19:03:53,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70566628] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:03:53,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:03:53,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:03:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886897689] [2025-03-16 19:03:53,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:03:53,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:03:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:03:53,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:03:53,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:03:53,354 INFO L87 Difference]: Start difference. First operand 314 states and 479 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:03:53,834 INFO L93 Difference]: Finished difference Result 840 states and 1291 transitions. [2025-03-16 19:03:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:03:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 82 [2025-03-16 19:03:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:03:53,838 INFO L225 Difference]: With dead ends: 840 [2025-03-16 19:03:53,838 INFO L226 Difference]: Without dead ends: 536 [2025-03-16 19:03:53,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:03:53,840 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 465 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:03:53,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1234 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:03:53,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2025-03-16 19:03:53,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 457. [2025-03-16 19:03:53,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 395 states have (on average 1.539240506329114) internal successors, (608), 398 states have internal predecessors, (608), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2025-03-16 19:03:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 694 transitions. [2025-03-16 19:03:53,868 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 694 transitions. Word has length 82 [2025-03-16 19:03:53,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:03:53,868 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 694 transitions. [2025-03-16 19:03:53,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 694 transitions. [2025-03-16 19:03:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:03:53,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:03:53,871 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] [2025-03-16 19:03:53,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:03:53,872 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:03:53,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:03:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash -705388148, now seen corresponding path program 1 times [2025-03-16 19:03:53,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:03:53,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598859636] [2025-03-16 19:03:53,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:03:53,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:03:53,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:03:53,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:03:53,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:03:53,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:03:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:03:54,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:03:54,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598859636] [2025-03-16 19:03:54,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598859636] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:03:54,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:03:54,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:03:54,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056805207] [2025-03-16 19:03:54,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:03:54,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:03:54,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:03:54,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:03:54,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:03:54,012 INFO L87 Difference]: Start difference. First operand 457 states and 694 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:54,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:03:54,442 INFO L93 Difference]: Finished difference Result 1288 states and 1973 transitions. [2025-03-16 19:03:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:03:54,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 82 [2025-03-16 19:03:54,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:03:54,447 INFO L225 Difference]: With dead ends: 1288 [2025-03-16 19:03:54,447 INFO L226 Difference]: Without dead ends: 841 [2025-03-16 19:03:54,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:03:54,449 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 460 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:03:54,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1218 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:03:54,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2025-03-16 19:03:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 758. [2025-03-16 19:03:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 656 states have (on average 1.5350609756097562) internal successors, (1007), 663 states have internal predecessors, (1007), 65 states have call successors, (65), 30 states have call predecessors, (65), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2025-03-16 19:03:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1153 transitions. [2025-03-16 19:03:54,498 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1153 transitions. Word has length 82 [2025-03-16 19:03:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:03:54,499 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 1153 transitions. [2025-03-16 19:03:54,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1153 transitions. [2025-03-16 19:03:54,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:03:54,504 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:03:54,504 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] [2025-03-16 19:03:54,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:03:54,505 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:03:54,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:03:54,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1919065579, now seen corresponding path program 1 times [2025-03-16 19:03:54,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:03:54,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119022795] [2025-03-16 19:03:54,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:03:54,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:03:54,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:03:54,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:03:54,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:03:54,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:03:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:03:54,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:03:54,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119022795] [2025-03-16 19:03:54,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119022795] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:03:54,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:03:54,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:03:54,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855962445] [2025-03-16 19:03:54,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:03:54,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:03:54,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:03:54,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:03:54,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:03:54,645 INFO L87 Difference]: Start difference. First operand 758 states and 1153 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:55,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:03:55,107 INFO L93 Difference]: Finished difference Result 2239 states and 3450 transitions. [2025-03-16 19:03:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:03:55,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 82 [2025-03-16 19:03:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:03:55,116 INFO L225 Difference]: With dead ends: 2239 [2025-03-16 19:03:55,116 INFO L226 Difference]: Without dead ends: 1491 [2025-03-16 19:03:55,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:03:55,119 INFO L435 NwaCegarLoop]: 310 mSDtfsCounter, 455 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:03:55,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1206 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:03:55,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2025-03-16 19:03:55,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1399. [2025-03-16 19:03:55,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1211 states have (on average 1.5383980181668042) internal successors, (1863), 1232 states have internal predecessors, (1863), 113 states have call successors, (113), 54 states have call predecessors, (113), 74 states have return successors, (177), 120 states have call predecessors, (177), 113 states have call successors, (177) [2025-03-16 19:03:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 2153 transitions. [2025-03-16 19:03:55,216 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 2153 transitions. Word has length 82 [2025-03-16 19:03:55,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:03:55,216 INFO L471 AbstractCegarLoop]: Abstraction has 1399 states and 2153 transitions. [2025-03-16 19:03:55,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 2153 transitions. [2025-03-16 19:03:55,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:03:55,219 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:03:55,220 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] [2025-03-16 19:03:55,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:03:55,220 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:03:55,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:03:55,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1310988716, now seen corresponding path program 1 times [2025-03-16 19:03:55,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:03:55,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907408540] [2025-03-16 19:03:55,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:03:55,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:03:55,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:03:55,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:03:55,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:03:55,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:03:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:03:55,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:03:55,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907408540] [2025-03-16 19:03:55,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907408540] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:03:55,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:03:55,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:03:55,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001561382] [2025-03-16 19:03:55,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:03:55,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:03:55,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:03:55,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:03:55,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:03:55,352 INFO L87 Difference]: Start difference. First operand 1399 states and 2153 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:03:55,924 INFO L93 Difference]: Finished difference Result 4278 states and 6720 transitions. [2025-03-16 19:03:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:03:55,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 82 [2025-03-16 19:03:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:03:55,935 INFO L225 Difference]: With dead ends: 4278 [2025-03-16 19:03:55,936 INFO L226 Difference]: Without dead ends: 2889 [2025-03-16 19:03:55,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:03:55,939 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 450 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:03:55,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1194 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:03:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2025-03-16 19:03:56,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 2780. [2025-03-16 19:03:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2402 states have (on average 1.5466278101582014) internal successors, (3715), 2469 states have internal predecessors, (3715), 209 states have call successors, (209), 102 states have call predecessors, (209), 168 states have return successors, (465), 224 states have call predecessors, (465), 209 states have call successors, (465) [2025-03-16 19:03:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 4389 transitions. [2025-03-16 19:03:56,077 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 4389 transitions. Word has length 82 [2025-03-16 19:03:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:03:56,078 INFO L471 AbstractCegarLoop]: Abstraction has 2780 states and 4389 transitions. [2025-03-16 19:03:56,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 4389 transitions. [2025-03-16 19:03:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:03:56,085 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:03:56,086 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] [2025-03-16 19:03:56,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:03:56,086 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:03:56,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:03:56,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1202478645, now seen corresponding path program 1 times [2025-03-16 19:03:56,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:03:56,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261431899] [2025-03-16 19:03:56,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:03:56,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:03:56,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:03:56,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:03:56,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:03:56,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:03:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:03:56,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:03:56,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261431899] [2025-03-16 19:03:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261431899] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:03:56,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:03:56,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:03:56,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200703700] [2025-03-16 19:03:56,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:03:56,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:03:56,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:03:56,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:03:56,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:03:56,176 INFO L87 Difference]: Start difference. First operand 2780 states and 4389 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:03:56,710 INFO L93 Difference]: Finished difference Result 8849 states and 14387 transitions. [2025-03-16 19:03:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:03:56,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 82 [2025-03-16 19:03:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:03:56,743 INFO L225 Difference]: With dead ends: 8849 [2025-03-16 19:03:56,744 INFO L226 Difference]: Without dead ends: 6079 [2025-03-16 19:03:56,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:03:56,756 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 507 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:03:56,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1151 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:03:56,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6079 states. [2025-03-16 19:03:57,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6079 to 5656. [2025-03-16 19:03:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5656 states, 4860 states have (on average 1.5516460905349794) internal successors, (7541), 5073 states have internal predecessors, (7541), 385 states have call successors, (385), 198 states have call predecessors, (385), 410 states have return successors, (1409), 416 states have call predecessors, (1409), 385 states have call successors, (1409) [2025-03-16 19:03:57,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5656 states to 5656 states and 9335 transitions. [2025-03-16 19:03:57,040 INFO L78 Accepts]: Start accepts. Automaton has 5656 states and 9335 transitions. Word has length 82 [2025-03-16 19:03:57,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:03:57,040 INFO L471 AbstractCegarLoop]: Abstraction has 5656 states and 9335 transitions. [2025-03-16 19:03:57,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5656 states and 9335 transitions. [2025-03-16 19:03:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:03:57,047 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:03:57,047 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] [2025-03-16 19:03:57,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:03:57,047 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:03:57,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:03:57,048 INFO L85 PathProgramCache]: Analyzing trace with hash 917808554, now seen corresponding path program 1 times [2025-03-16 19:03:57,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:03:57,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563311231] [2025-03-16 19:03:57,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:03:57,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:03:57,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:03:57,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:03:57,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:03:57,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:03:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:03:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:03:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563311231] [2025-03-16 19:03:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563311231] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:03:57,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:03:57,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:03:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789949131] [2025-03-16 19:03:57,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:03:57,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:03:57,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:03:57,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:03:57,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:03:57,144 INFO L87 Difference]: Start difference. First operand 5656 states and 9335 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:57,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:03:57,881 INFO L93 Difference]: Finished difference Result 17975 states and 31223 transitions. [2025-03-16 19:03:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:03:57,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 82 [2025-03-16 19:03:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:03:57,955 INFO L225 Difference]: With dead ends: 17975 [2025-03-16 19:03:57,956 INFO L226 Difference]: Without dead ends: 12329 [2025-03-16 19:03:57,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:03:57,978 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 500 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:03:57,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 802 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:03:57,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12329 states. [2025-03-16 19:03:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12329 to 11765. [2025-03-16 19:03:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11765 states, 9987 states have (on average 1.5489135876639633) internal successors, (15469), 10654 states have internal predecessors, (15469), 721 states have call successors, (721), 390 states have call predecessors, (721), 1056 states have return successors, (4817), 784 states have call predecessors, (4817), 721 states have call successors, (4817) [2025-03-16 19:03:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11765 states to 11765 states and 21007 transitions. [2025-03-16 19:03:58,644 INFO L78 Accepts]: Start accepts. Automaton has 11765 states and 21007 transitions. Word has length 82 [2025-03-16 19:03:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:03:58,644 INFO L471 AbstractCegarLoop]: Abstraction has 11765 states and 21007 transitions. [2025-03-16 19:03:58,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 11765 states and 21007 transitions. [2025-03-16 19:03:58,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:03:58,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:03:58,656 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] [2025-03-16 19:03:58,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:03:58,656 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:03:58,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:03:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash 709110251, now seen corresponding path program 1 times [2025-03-16 19:03:58,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:03:58,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100646550] [2025-03-16 19:03:58,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:03:58,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:03:58,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:03:58,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:03:58,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:03:58,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:03:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:03:58,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:03:58,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100646550] [2025-03-16 19:03:58,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100646550] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:03:58,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:03:58,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:03:58,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767064865] [2025-03-16 19:03:58,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:03:58,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:03:58,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:03:58,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:03:58,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:03:58,740 INFO L87 Difference]: Start difference. First operand 11765 states and 21007 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:03:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:03:59,992 INFO L93 Difference]: Finished difference Result 36996 states and 72297 transitions. [2025-03-16 19:03:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:03:59,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 82 [2025-03-16 19:03:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:00,145 INFO L225 Difference]: With dead ends: 36996 [2025-03-16 19:04:00,146 INFO L226 Difference]: Without dead ends: 25241 [2025-03-16 19:04:00,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:04:00,196 INFO L435 NwaCegarLoop]: 288 mSDtfsCounter, 443 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:00,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1127 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:04:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25241 states. [2025-03-16 19:04:01,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25241 to 24616. [2025-03-16 19:04:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24616 states, 20420 states have (on average 1.529333986287953) internal successors, (31229), 22481 states have internal predecessors, (31229), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 2834 states have return successors, (17745), 1488 states have call predecessors, (17745), 1361 states have call successors, (17745) [2025-03-16 19:04:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24616 states to 24616 states and 50335 transitions. [2025-03-16 19:04:01,929 INFO L78 Accepts]: Start accepts. Automaton has 24616 states and 50335 transitions. Word has length 82 [2025-03-16 19:04:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:01,929 INFO L471 AbstractCegarLoop]: Abstraction has 24616 states and 50335 transitions. [2025-03-16 19:04:01,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-16 19:04:01,930 INFO L276 IsEmpty]: Start isEmpty. Operand 24616 states and 50335 transitions. [2025-03-16 19:04:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:04:01,949 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:01,950 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] [2025-03-16 19:04:01,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:04:01,950 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:01,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:01,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1098737270, now seen corresponding path program 1 times [2025-03-16 19:04:01,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:01,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278292237] [2025-03-16 19:04:01,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:01,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:01,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:04:01,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:04:01,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:01,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:04:02,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278292237] [2025-03-16 19:04:02,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278292237] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:02,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:02,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:02,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179639120] [2025-03-16 19:04:02,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:02,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:02,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:02,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:02,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:02,081 INFO L87 Difference]: Start difference. First operand 24616 states and 50335 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:02,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:02,851 INFO L93 Difference]: Finished difference Result 49223 states and 101238 transitions. [2025-03-16 19:04:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:02,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 1 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 82 [2025-03-16 19:04:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:02,982 INFO L225 Difference]: With dead ends: 49223 [2025-03-16 19:04:02,983 INFO L226 Difference]: Without dead ends: 24618 [2025-03-16 19:04:03,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:03,053 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:03,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 727 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24618 states. [2025-03-16 19:04:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24618 to 24618. [2025-03-16 19:04:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24618 states, 20422 states have (on average 1.5230143962393496) internal successors, (31103), 22483 states have internal predecessors, (31103), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 2834 states have return successors, (17745), 1488 states have call predecessors, (17745), 1361 states have call successors, (17745) [2025-03-16 19:04:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24618 states to 24618 states and 50209 transitions. [2025-03-16 19:04:04,271 INFO L78 Accepts]: Start accepts. Automaton has 24618 states and 50209 transitions. Word has length 82 [2025-03-16 19:04:04,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:04,272 INFO L471 AbstractCegarLoop]: Abstraction has 24618 states and 50209 transitions. [2025-03-16 19:04:04,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:04,272 INFO L276 IsEmpty]: Start isEmpty. Operand 24618 states and 50209 transitions. [2025-03-16 19:04:04,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:04:04,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:04,294 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] [2025-03-16 19:04:04,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:04:04,294 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:04,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash -660727767, now seen corresponding path program 1 times [2025-03-16 19:04:04,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:04,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095801112] [2025-03-16 19:04:04,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:04,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:04,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:04:04,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:04:04,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:04,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:04:04,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:04,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095801112] [2025-03-16 19:04:04,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095801112] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:04,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:04,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:04:04,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384622508] [2025-03-16 19:04:04,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:04,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:04:04,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:04,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:04:04,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:04,345 INFO L87 Difference]: Start difference. First operand 24618 states and 50209 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:08,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:08,633 INFO L93 Difference]: Finished difference Result 144657 states and 300176 transitions. [2025-03-16 19:04:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:04:08,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (5), 1 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 82 [2025-03-16 19:04:08,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:09,351 INFO L225 Difference]: With dead ends: 144657 [2025-03-16 19:04:09,351 INFO L226 Difference]: Without dead ends: 120050 [2025-03-16 19:04:09,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:04:09,479 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 1086 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:09,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1102 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:04:09,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120050 states. [2025-03-16 19:04:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120050 to 118812. [2025-03-16 19:04:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118812 states, 98401 states have (on average 1.525421489619008) internal successors, (150103), 108831 states have internal predecessors, (150103), 6288 states have call successors, (6288), 3822 states have call predecessors, (6288), 14122 states have return successors, (89451), 6286 states have call predecessors, (89451), 6288 states have call successors, (89451) [2025-03-16 19:04:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118812 states to 118812 states and 245842 transitions. [2025-03-16 19:04:17,444 INFO L78 Accepts]: Start accepts. Automaton has 118812 states and 245842 transitions. Word has length 82 [2025-03-16 19:04:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:17,444 INFO L471 AbstractCegarLoop]: Abstraction has 118812 states and 245842 transitions. [2025-03-16 19:04:17,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 118812 states and 245842 transitions. [2025-03-16 19:04:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:04:17,464 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:17,465 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] [2025-03-16 19:04:17,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:04:17,465 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:17,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2137028358, now seen corresponding path program 1 times [2025-03-16 19:04:17,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:17,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157882846] [2025-03-16 19:04:17,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:17,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:17,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:04:17,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:04:17,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:17,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:04:17,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:17,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157882846] [2025-03-16 19:04:17,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157882846] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:17,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:17,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:17,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389336657] [2025-03-16 19:04:17,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:17,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:17,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:17,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:17,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:17,508 INFO L87 Difference]: Start difference. First operand 118812 states and 245842 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:23,105 INFO L93 Difference]: Finished difference Result 238129 states and 496605 transitions. [2025-03-16 19:04:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:23,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 1 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 82 [2025-03-16 19:04:23,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:24,098 INFO L225 Difference]: With dead ends: 238129 [2025-03-16 19:04:24,098 INFO L226 Difference]: Without dead ends: 119328 [2025-03-16 19:04:24,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:24,343 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:24,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 727 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119328 states.