./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.12.cil-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 bc6dc2c99e05b6915f0a2e5b5d96221c996d96767aaa6be997dea59c4d6f5f0a --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 16:08:27,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 16:08:27,715 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 16:08:27,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 16:08:27,720 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 16:08:27,740 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 16:08:27,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 16:08:27,741 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 16:08:27,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 16:08:27,742 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 16:08:27,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 16:08:27,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 16:08:27,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 16:08:27,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 16:08:27,743 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 16:08:27,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 16:08:27,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 16:08:27,744 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 16:08:27,745 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 16:08:27,745 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 16:08:27,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 16:08:27,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 16:08:27,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 16:08:27,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 16:08:27,745 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 16:08:27,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 16:08:27,746 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 16:08:27,746 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 16:08:27,746 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 16:08:27,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 16:08:27,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 16:08:27,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 16:08:27,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:08:27,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 16:08:27,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 16:08:27,747 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 16:08:27,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 16:08:27,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 16:08:27,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 16:08:27,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 16:08:27,748 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 16:08:27,748 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 16:08:27,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 16:08:27,748 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-jdk21/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 -> bc6dc2c99e05b6915f0a2e5b5d96221c996d96767aaa6be997dea59c4d6f5f0a [2025-02-05 16:08:28,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 16:08:28,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 16:08:28,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 16:08:28,098 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 16:08:28,098 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 16:08:28,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.12.cil-2.c [2025-02-05 16:08:29,444 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/098f0279d/822fde6a8bde4a4082c6c512eba34dc2/FLAGc731a3b1c [2025-02-05 16:08:29,815 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 16:08:29,816 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.12.cil-2.c [2025-02-05 16:08:29,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/098f0279d/822fde6a8bde4a4082c6c512eba34dc2/FLAGc731a3b1c [2025-02-05 16:08:29,859 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/098f0279d/822fde6a8bde4a4082c6c512eba34dc2 [2025-02-05 16:08:29,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 16:08:29,865 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 16:08:29,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 16:08:29,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 16:08:29,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 16:08:29,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:08:29" (1/1) ... [2025-02-05 16:08:29,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ef64e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:29, skipping insertion in model container [2025-02-05 16:08:29,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:08:29" (1/1) ... [2025-02-05 16:08:29,923 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 16:08:30,072 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.12.cil-2.c[671,684] [2025-02-05 16:08:30,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:08:30,239 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 16:08:30,249 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.12.cil-2.c[671,684] [2025-02-05 16:08:30,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:08:30,353 INFO L204 MainTranslator]: Completed translation [2025-02-05 16:08:30,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30 WrapperNode [2025-02-05 16:08:30,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 16:08:30,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 16:08:30,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 16:08:30,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 16:08:30,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,429 INFO L138 Inliner]: procedures = 52, calls = 67, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 834 [2025-02-05 16:08:30,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 16:08:30,431 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 16:08:30,431 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 16:08:30,431 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 16:08:30,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,446 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,467 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]. [2025-02-05 16:08:30,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,484 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 16:08:30,504 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 16:08:30,504 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 16:08:30,504 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 16:08:30,508 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (1/1) ... [2025-02-05 16:08:30,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:08:30,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:08:30,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 16:08:30,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 16:08:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 16:08:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-05 16:08:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-05 16:08:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-02-05 16:08:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-02-05 16:08:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-05 16:08:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-05 16:08:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-05 16:08:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-05 16:08:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-05 16:08:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-05 16:08:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-05 16:08:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-05 16:08:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 16:08:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 16:08:30,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 16:08:30,672 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 16:08:30,674 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 16:08:31,665 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2025-02-05 16:08:31,666 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 16:08:31,693 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 16:08:31,693 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 16:08:31,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:08:31 BoogieIcfgContainer [2025-02-05 16:08:31,694 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 16:08:31,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 16:08:31,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 16:08:31,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 16:08:31,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 04:08:29" (1/3) ... [2025-02-05 16:08:31,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc4ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:08:31, skipping insertion in model container [2025-02-05 16:08:31,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:30" (2/3) ... [2025-02-05 16:08:31,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc4ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:08:31, skipping insertion in model container [2025-02-05 16:08:31,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:08:31" (3/3) ... [2025-02-05 16:08:31,703 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.12.cil-2.c [2025-02-05 16:08:31,716 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 16:08:31,719 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.12.cil-2.c that has 7 procedures, 408 locations, 1 initial locations, 15 loop locations, and 1 error locations. [2025-02-05 16:08:31,777 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 16:08:31,787 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;@5acfd992, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 16:08:31,787 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 16:08:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 408 states, 374 states have (on average 1.5775401069518717) internal successors, (590), 376 states have internal predecessors, (590), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-05 16:08:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-05 16:08:31,808 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:31,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:31,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:31,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:31,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1406660484, now seen corresponding path program 1 times [2025-02-05 16:08:31,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:31,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403480780] [2025-02-05 16:08:31,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:31,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:31,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-05 16:08:31,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-05 16:08:31,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:31,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:32,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:32,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403480780] [2025-02-05 16:08:32,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403480780] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:32,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:32,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:08:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643869192] [2025-02-05 16:08:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:32,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:08:32,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:32,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:08:32,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:08:32,602 INFO L87 Difference]: Start difference. First operand has 408 states, 374 states have (on average 1.5775401069518717) internal successors, (590), 376 states have internal predecessors, (590), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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) [2025-02-05 16:08:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:33,561 INFO L93 Difference]: Finished difference Result 1230 states and 1952 transitions. [2025-02-05 16:08:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:08:33,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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 177 [2025-02-05 16:08:33,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:33,590 INFO L225 Difference]: With dead ends: 1230 [2025-02-05 16:08:33,590 INFO L226 Difference]: Without dead ends: 834 [2025-02-05 16:08:33,601 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 [2025-02-05 16:08:33,605 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 1182 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:33,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 1774 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 16:08:33,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2025-02-05 16:08:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 805. [2025-02-05 16:08:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 744 states have (on average 1.5470430107526882) internal successors, (1151), 746 states have internal predecessors, (1151), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2025-02-05 16:08:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1246 transitions. [2025-02-05 16:08:33,726 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1246 transitions. Word has length 177 [2025-02-05 16:08:33,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:33,727 INFO L471 AbstractCegarLoop]: Abstraction has 805 states and 1246 transitions. [2025-02-05 16:08:33,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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) [2025-02-05 16:08:33,727 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1246 transitions. [2025-02-05 16:08:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-05 16:08:33,736 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:33,736 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:33,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 16:08:33,737 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:33,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:33,738 INFO L85 PathProgramCache]: Analyzing trace with hash 302830526, now seen corresponding path program 1 times [2025-02-05 16:08:33,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733993234] [2025-02-05 16:08:33,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:33,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-05 16:08:33,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-05 16:08:33,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:33,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:34,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:34,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733993234] [2025-02-05 16:08:34,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733993234] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:34,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:34,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:34,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180056092] [2025-02-05 16:08:34,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:34,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:34,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:34,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:34,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:34,117 INFO L87 Difference]: Start difference. First operand 805 states and 1246 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:35,087 INFO L93 Difference]: Finished difference Result 2098 states and 3286 transitions. [2025-02-05 16:08:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:35,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2025-02-05 16:08:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:35,096 INFO L225 Difference]: With dead ends: 2098 [2025-02-05 16:08:35,096 INFO L226 Difference]: Without dead ends: 1313 [2025-02-05 16:08:35,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:35,102 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 1188 mSDsluCounter, 2575 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:35,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 3406 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 16:08:35,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2025-02-05 16:08:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1180. [2025-02-05 16:08:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1091 states have (on average 1.538955087076077) internal successors, (1679), 1094 states have internal predecessors, (1679), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (72), 69 states have call predecessors, (72), 68 states have call successors, (72) [2025-02-05 16:08:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1819 transitions. [2025-02-05 16:08:35,172 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1819 transitions. Word has length 177 [2025-02-05 16:08:35,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:35,174 INFO L471 AbstractCegarLoop]: Abstraction has 1180 states and 1819 transitions. [2025-02-05 16:08:35,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1819 transitions. [2025-02-05 16:08:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-05 16:08:35,180 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:35,180 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:35,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 16:08:35,181 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:35,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2804003, now seen corresponding path program 1 times [2025-02-05 16:08:35,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:35,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619429960] [2025-02-05 16:08:35,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:35,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:35,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-05 16:08:35,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-05 16:08:35,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:35,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:35,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:35,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619429960] [2025-02-05 16:08:35,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619429960] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:35,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285022730] [2025-02-05 16:08:35,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:35,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:35,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:35,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:35,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:35,468 INFO L87 Difference]: Start difference. First operand 1180 states and 1819 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:36,313 INFO L93 Difference]: Finished difference Result 3293 states and 5144 transitions. [2025-02-05 16:08:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:36,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2025-02-05 16:08:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:36,327 INFO L225 Difference]: With dead ends: 3293 [2025-02-05 16:08:36,327 INFO L226 Difference]: Without dead ends: 2133 [2025-02-05 16:08:36,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:36,332 INFO L435 NwaCegarLoop]: 530 mSDtfsCounter, 1215 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:36,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 2367 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 16:08:36,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2025-02-05 16:08:36,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 1979. [2025-02-05 16:08:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1832 states have (on average 1.5425764192139737) internal successors, (2826), 1839 states have internal predecessors, (2826), 110 states have call successors, (110), 30 states have call predecessors, (110), 36 states have return successors, (126), 113 states have call predecessors, (126), 110 states have call successors, (126) [2025-02-05 16:08:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 3062 transitions. [2025-02-05 16:08:36,432 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 3062 transitions. Word has length 177 [2025-02-05 16:08:36,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:36,433 INFO L471 AbstractCegarLoop]: Abstraction has 1979 states and 3062 transitions. [2025-02-05 16:08:36,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 3062 transitions. [2025-02-05 16:08:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-05 16:08:36,436 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:36,436 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:36,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 16:08:36,436 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:36,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:36,438 INFO L85 PathProgramCache]: Analyzing trace with hash -705399842, now seen corresponding path program 1 times [2025-02-05 16:08:36,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:36,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470729442] [2025-02-05 16:08:36,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:36,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-05 16:08:36,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-05 16:08:36,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:36,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:36,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:36,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470729442] [2025-02-05 16:08:36,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470729442] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:36,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:36,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:36,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873553557] [2025-02-05 16:08:36,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:36,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:36,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:36,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:36,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:36,670 INFO L87 Difference]: Start difference. First operand 1979 states and 3062 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:37,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:37,678 INFO L93 Difference]: Finished difference Result 5874 states and 9245 transitions. [2025-02-05 16:08:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:37,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2025-02-05 16:08:37,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:37,701 INFO L225 Difference]: With dead ends: 5874 [2025-02-05 16:08:37,701 INFO L226 Difference]: Without dead ends: 3915 [2025-02-05 16:08:37,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:37,709 INFO L435 NwaCegarLoop]: 824 mSDtfsCounter, 1178 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:37,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 3378 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 16:08:37,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3915 states. [2025-02-05 16:08:37,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3915 to 3718. [2025-02-05 16:08:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3718 states, 3449 states have (on average 1.5604523050159467) internal successors, (5382), 3470 states have internal predecessors, (5382), 194 states have call successors, (194), 54 states have call predecessors, (194), 74 states have return successors, (258), 201 states have call predecessors, (258), 194 states have call successors, (258) [2025-02-05 16:08:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3718 states to 3718 states and 5834 transitions. [2025-02-05 16:08:37,904 INFO L78 Accepts]: Start accepts. Automaton has 3718 states and 5834 transitions. Word has length 177 [2025-02-05 16:08:37,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:37,904 INFO L471 AbstractCegarLoop]: Abstraction has 3718 states and 5834 transitions. [2025-02-05 16:08:37,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:37,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3718 states and 5834 transitions. [2025-02-05 16:08:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-05 16:08:37,908 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:37,908 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:37,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 16:08:37,909 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:37,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:37,909 INFO L85 PathProgramCache]: Analyzing trace with hash 241767101, now seen corresponding path program 1 times [2025-02-05 16:08:37,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:37,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934397841] [2025-02-05 16:08:37,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:37,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-05 16:08:37,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-05 16:08:37,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:37,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:38,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:38,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934397841] [2025-02-05 16:08:38,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934397841] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:38,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:38,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:38,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352736490] [2025-02-05 16:08:38,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:38,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:38,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:38,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:38,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:38,093 INFO L87 Difference]: Start difference. First operand 3718 states and 5834 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:39,100 INFO L93 Difference]: Finished difference Result 11581 states and 18579 transitions. [2025-02-05 16:08:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:39,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2025-02-05 16:08:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:39,144 INFO L225 Difference]: With dead ends: 11581 [2025-02-05 16:08:39,144 INFO L226 Difference]: Without dead ends: 7883 [2025-02-05 16:08:39,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:39,161 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 1173 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:39,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 3366 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 16:08:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7883 states. [2025-02-05 16:08:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7883 to 7601. [2025-02-05 16:08:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7601 states, 7070 states have (on average 1.5906647807637906) internal successors, (11246), 7137 states have internal predecessors, (11246), 362 states have call successors, (362), 102 states have call predecessors, (362), 168 states have return successors, (618), 377 states have call predecessors, (618), 362 states have call successors, (618) [2025-02-05 16:08:39,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7601 states to 7601 states and 12226 transitions. [2025-02-05 16:08:39,580 INFO L78 Accepts]: Start accepts. Automaton has 7601 states and 12226 transitions. Word has length 177 [2025-02-05 16:08:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:39,582 INFO L471 AbstractCegarLoop]: Abstraction has 7601 states and 12226 transitions. [2025-02-05 16:08:39,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 7601 states and 12226 transitions. [2025-02-05 16:08:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-05 16:08:39,590 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:39,590 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:39,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 16:08:39,591 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:39,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash 965057534, now seen corresponding path program 1 times [2025-02-05 16:08:39,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:39,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169847310] [2025-02-05 16:08:39,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:39,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:39,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-05 16:08:39,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-05 16:08:39,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:39,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:39,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169847310] [2025-02-05 16:08:39,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169847310] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:39,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:39,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:39,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407366076] [2025-02-05 16:08:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:39,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:39,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:39,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:39,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:39,790 INFO L87 Difference]: Start difference. First operand 7601 states and 12226 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:41,004 INFO L93 Difference]: Finished difference Result 24556 states and 40621 transitions. [2025-02-05 16:08:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:41,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2025-02-05 16:08:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:41,114 INFO L225 Difference]: With dead ends: 24556 [2025-02-05 16:08:41,115 INFO L226 Difference]: Without dead ends: 16975 [2025-02-05 16:08:41,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:41,148 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 1168 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:41,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 3354 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 16:08:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16975 states. [2025-02-05 16:08:41,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16975 to 16528. [2025-02-05 16:08:41,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16528 states, 15419 states have (on average 1.62954796030871) internal successors, (25126), 15632 states have internal predecessors, (25126), 698 states have call successors, (698), 198 states have call predecessors, (698), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2025-02-05 16:08:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16528 states to 16528 states and 27546 transitions. [2025-02-05 16:08:42,057 INFO L78 Accepts]: Start accepts. Automaton has 16528 states and 27546 transitions. Word has length 177 [2025-02-05 16:08:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:42,057 INFO L471 AbstractCegarLoop]: Abstraction has 16528 states and 27546 transitions. [2025-02-05 16:08:42,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 16528 states and 27546 transitions. [2025-02-05 16:08:42,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-05 16:08:42,067 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:42,067 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:42,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 16:08:42,067 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:42,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:42,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1644009827, now seen corresponding path program 1 times [2025-02-05 16:08:42,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:42,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251993184] [2025-02-05 16:08:42,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:42,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:42,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-05 16:08:42,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-05 16:08:42,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:42,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:42,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:42,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251993184] [2025-02-05 16:08:42,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251993184] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:42,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082649308] [2025-02-05 16:08:42,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:42,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:42,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:42,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:42,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:42,248 INFO L87 Difference]: Start difference. First operand 16528 states and 27546 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:43,974 INFO L93 Difference]: Finished difference Result 54975 states and 94891 transitions. [2025-02-05 16:08:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:43,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2025-02-05 16:08:43,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:44,207 INFO L225 Difference]: With dead ends: 54975 [2025-02-05 16:08:44,207 INFO L226 Difference]: Without dead ends: 38467 [2025-02-05 16:08:44,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:44,288 INFO L435 NwaCegarLoop]: 815 mSDtfsCounter, 1163 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:44,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 3342 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 16:08:44,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38467 states. [2025-02-05 16:08:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38467 to 37703. [2025-02-05 16:08:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37703 states, 35276 states have (on average 1.6732622746343122) internal successors, (59026), 35943 states have internal predecessors, (59026), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2025-02-05 16:08:46,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37703 states to 37703 states and 65862 transitions. [2025-02-05 16:08:46,041 INFO L78 Accepts]: Start accepts. Automaton has 37703 states and 65862 transitions. Word has length 177 [2025-02-05 16:08:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:46,042 INFO L471 AbstractCegarLoop]: Abstraction has 37703 states and 65862 transitions. [2025-02-05 16:08:46,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:46,042 INFO L276 IsEmpty]: Start isEmpty. Operand 37703 states and 65862 transitions. [2025-02-05 16:08:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-05 16:08:46,057 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:46,058 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:46,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 16:08:46,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:46,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:46,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1451078626, now seen corresponding path program 1 times [2025-02-05 16:08:46,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:46,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210116144] [2025-02-05 16:08:46,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:46,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:46,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-05 16:08:46,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-05 16:08:46,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:46,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:46,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:46,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210116144] [2025-02-05 16:08:46,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210116144] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:46,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:46,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325292986] [2025-02-05 16:08:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:46,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:46,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:46,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:46,233 INFO L87 Difference]: Start difference. First operand 37703 states and 65862 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:49,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:49,119 INFO L93 Difference]: Finished difference Result 128582 states and 234657 transitions. [2025-02-05 16:08:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:49,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2025-02-05 16:08:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:49,681 INFO L225 Difference]: With dead ends: 128582 [2025-02-05 16:08:49,681 INFO L226 Difference]: Without dead ends: 90899 [2025-02-05 16:08:49,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:49,842 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 1158 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:49,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 3330 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 16:08:49,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90899 states. [2025-02-05 16:08:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90899 to 89530. [2025-02-05 16:08:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89530 states, 83981 states have (on average 1.7181267191388527) internal successors, (144290), 86042 states have internal predecessors, (144290), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 2834 states have return successors, (19098), 2841 states have call predecessors, (19098), 2714 states have call successors, (19098) [2025-02-05 16:08:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89530 states to 89530 states and 166102 transitions. [2025-02-05 16:08:53,642 INFO L78 Accepts]: Start accepts. Automaton has 89530 states and 166102 transitions. Word has length 177 [2025-02-05 16:08:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:53,642 INFO L471 AbstractCegarLoop]: Abstraction has 89530 states and 166102 transitions. [2025-02-05 16:08:53,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 89530 states and 166102 transitions. [2025-02-05 16:08:53,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-05 16:08:53,673 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:53,673 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:53,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 16:08:53,674 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:53,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1583402371, now seen corresponding path program 1 times [2025-02-05 16:08:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:53,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550050501] [2025-02-05 16:08:53,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:53,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-05 16:08:53,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-05 16:08:53,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:53,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:08:54,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:54,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550050501] [2025-02-05 16:08:54,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550050501] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:54,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:54,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:54,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917066042] [2025-02-05 16:08:54,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:54,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:54,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:54,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:54,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:54,134 INFO L87 Difference]: Start difference. First operand 89530 states and 166102 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:08:59,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:59,554 INFO L93 Difference]: Finished difference Result 312185 states and 611759 transitions. [2025-02-05 16:08:59,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:59,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2025-02-05 16:08:59,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:09:00,814 INFO L225 Difference]: With dead ends: 312185 [2025-02-05 16:09:00,815 INFO L226 Difference]: Without dead ends: 222675 [2025-02-05 16:09:01,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:09:01,240 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 1153 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 16:09:01,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 3318 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 16:09:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222675 states. [2025-02-05 16:09:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222675 to 220157. [2025-02-05 16:09:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220157 states, 206906 states have (on average 1.7608285888277768) internal successors, (364326), 213213 states have internal predecessors, (364326), 5402 states have call successors, (5402), 1542 states have call predecessors, (5402), 7848 states have return successors, (70938), 5657 states have call predecessors, (70938), 5402 states have call successors, (70938) [2025-02-05 16:09:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220157 states to 220157 states and 440666 transitions. [2025-02-05 16:09:11,051 INFO L78 Accepts]: Start accepts. Automaton has 220157 states and 440666 transitions. Word has length 177 [2025-02-05 16:09:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:09:11,052 INFO L471 AbstractCegarLoop]: Abstraction has 220157 states and 440666 transitions. [2025-02-05 16:09:11,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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) [2025-02-05 16:09:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 220157 states and 440666 transitions. [2025-02-05 16:09:11,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-05 16:09:11,098 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:09:11,098 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:09:11,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 16:09:11,099 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:09:11,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:09:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash -617839554, now seen corresponding path program 1 times [2025-02-05 16:09:11,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:09:11,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492665367] [2025-02-05 16:09:11,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:09:11,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:09:11,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-05 16:09:11,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-05 16:09:11,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:09:11,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:09:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:09:11,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:09:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492665367] [2025-02-05 16:09:11,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492665367] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:09:11,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:09:11,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:09:11,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3518794] [2025-02-05 16:09:11,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:09:11,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:09:11,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:09:11,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:09:11,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:09:11,267 INFO L87 Difference]: Start difference. First operand 220157 states and 440666 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 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)