./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.12.cil-1.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-1.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 962623ba1d780e7ad35b9b6d7f5839750bc2f361556d46080824a3701cf71595 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 16:08:22,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 16:08:22,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 16:08:22,839 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 16:08:22,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 16:08:22,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 16:08:22,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 16:08:22,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 16:08:22,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 16:08:22,879 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 16:08:22,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 16:08:22,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 16:08:22,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 16:08:22,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 16:08:22,879 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 16:08:22,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 16:08:22,880 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:08:22,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 16:08:22,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 16:08:22,881 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 16:08:22,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 16:08:22,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 16:08:22,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 16:08:22,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 16:08:22,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 16:08:22,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 16:08:22,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 16:08:22,881 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 -> 962623ba1d780e7ad35b9b6d7f5839750bc2f361556d46080824a3701cf71595 [2025-02-05 16:08:23,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 16:08:23,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 16:08:23,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 16:08:23,116 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 16:08:23,117 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 16:08:23,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.12.cil-1.c [2025-02-05 16:08:24,227 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/08a098621/686d5d77f77e48b6a8ecdbd7a7727fa3/FLAG5e0de2c84 [2025-02-05 16:08:24,519 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 16:08:24,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.12.cil-1.c [2025-02-05 16:08:24,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/08a098621/686d5d77f77e48b6a8ecdbd7a7727fa3/FLAG5e0de2c84 [2025-02-05 16:08:24,549 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/08a098621/686d5d77f77e48b6a8ecdbd7a7727fa3 [2025-02-05 16:08:24,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 16:08:24,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 16:08:24,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 16:08:24,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 16:08:24,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 16:08:24,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:24,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e4d841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24, skipping insertion in model container [2025-02-05 16:08:24,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:24,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 16:08:24,702 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-1.c[671,684] [2025-02-05 16:08:24,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:08:24,841 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 16:08:24,848 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-1.c[671,684] [2025-02-05 16:08:24,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:08:24,931 INFO L204 MainTranslator]: Completed translation [2025-02-05 16:08:24,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24 WrapperNode [2025-02-05 16:08:24,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 16:08:24,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 16:08:24,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 16:08:24,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 16:08:24,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:24,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:24,983 INFO L138 Inliner]: procedures = 52, calls = 68, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 840 [2025-02-05 16:08:24,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 16:08:24,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 16:08:24,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 16:08:24,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 16:08:24,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:24,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:24,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:25,011 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 16:08:25,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:25,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:25,019 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:25,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:25,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:25,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:25,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 16:08:25,026 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 16:08:25,026 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 16:08:25,026 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 16:08:25,026 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (1/1) ... [2025-02-05 16:08:25,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:08:25,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:08:25,059 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 16:08:25,065 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 16:08:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 16:08:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-05 16:08:25,080 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-05 16:08:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-02-05 16:08:25,080 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-02-05 16:08:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-05 16:08:25,080 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-05 16:08:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-02-05 16:08:25,080 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-02-05 16:08:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-05 16:08:25,080 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-05 16:08:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-05 16:08:25,081 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-05 16:08:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-05 16:08:25,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-05 16:08:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 16:08:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 16:08:25,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 16:08:25,163 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 16:08:25,165 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 16:08:25,785 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2025-02-05 16:08:25,786 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 16:08:25,797 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 16:08:25,797 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 16:08:25,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:08:25 BoogieIcfgContainer [2025-02-05 16:08:25,797 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 16:08:25,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 16:08:25,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 16:08:25,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 16:08:25,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 04:08:24" (1/3) ... [2025-02-05 16:08:25,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0a544f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:08:25, skipping insertion in model container [2025-02-05 16:08:25,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:08:24" (2/3) ... [2025-02-05 16:08:25,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0a544f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:08:25, skipping insertion in model container [2025-02-05 16:08:25,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:08:25" (3/3) ... [2025-02-05 16:08:25,803 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.12.cil-1.c [2025-02-05 16:08:25,812 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 16:08:25,814 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.12.cil-1.c that has 8 procedures, 416 locations, 1 initial locations, 15 loop locations, and 1 error locations. [2025-02-05 16:08:25,887 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 16:08:25,902 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;@5f08ee7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 16:08:25,902 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 16:08:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 379 states have (on average 1.5831134564643798) internal successors, (600), 383 states have internal predecessors, (600), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-05 16:08:25,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-05 16:08:25,915 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:25,916 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:25,916 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:25,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1864873749, now seen corresponding path program 1 times [2025-02-05 16:08:25,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:25,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571526078] [2025-02-05 16:08:25,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:25,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:26,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-05 16:08:26,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-05 16:08:26,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:26,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:26,506 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 16:08:26,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:26,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571526078] [2025-02-05 16:08:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571526078] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:26,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:26,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:08:26,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435629406] [2025-02-05 16:08:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:26,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:08:26,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:26,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:08:26,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:08:26,537 INFO L87 Difference]: Start difference. First operand has 416 states, 379 states have (on average 1.5831134564643798) internal successors, (600), 383 states have internal predecessors, (600), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:27,169 INFO L93 Difference]: Finished difference Result 1252 states and 1994 transitions. [2025-02-05 16:08:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:08:27,171 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2025-02-05 16:08:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:27,182 INFO L225 Difference]: With dead ends: 1252 [2025-02-05 16:08:27,182 INFO L226 Difference]: Without dead ends: 848 [2025-02-05 16:08:27,185 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 16:08:27,187 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 1196 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:27,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 1814 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 16:08:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2025-02-05 16:08:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 817. [2025-02-05 16:08:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 754 states have (on average 1.5530503978779842) internal successors, (1171), 757 states have internal predecessors, (1171), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2025-02-05 16:08:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1268 transitions. [2025-02-05 16:08:27,271 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1268 transitions. Word has length 178 [2025-02-05 16:08:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:27,272 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1268 transitions. [2025-02-05 16:08:27,272 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1268 transitions. [2025-02-05 16:08:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-05 16:08:27,276 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:27,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:27,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 16:08:27,277 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:27,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:27,277 INFO L85 PathProgramCache]: Analyzing trace with hash -975479789, now seen corresponding path program 1 times [2025-02-05 16:08:27,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:27,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521121257] [2025-02-05 16:08:27,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:27,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:27,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-05 16:08:27,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-05 16:08:27,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:27,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:27,611 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 16:08:27,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:27,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521121257] [2025-02-05 16:08:27,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521121257] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:27,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:27,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:27,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372132551] [2025-02-05 16:08:27,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:27,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:27,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:27,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:27,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:27,614 INFO L87 Difference]: Start difference. First operand 817 states and 1268 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:28,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:28,337 INFO L93 Difference]: Finished difference Result 2129 states and 3342 transitions. [2025-02-05 16:08:28,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:28,338 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2025-02-05 16:08:28,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:28,346 INFO L225 Difference]: With dead ends: 2129 [2025-02-05 16:08:28,347 INFO L226 Difference]: Without dead ends: 1332 [2025-02-05 16:08:28,350 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 16:08:28,351 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 1201 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:28,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 3493 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:28,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2025-02-05 16:08:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1197. [2025-02-05 16:08:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1106 states have (on average 1.5452079566003616) internal successors, (1709), 1110 states have internal predecessors, (1709), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (72), 69 states have call predecessors, (72), 68 states have call successors, (72) [2025-02-05 16:08:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1851 transitions. [2025-02-05 16:08:28,404 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1851 transitions. Word has length 178 [2025-02-05 16:08:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:28,404 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 1851 transitions. [2025-02-05 16:08:28,404 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1851 transitions. [2025-02-05 16:08:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-05 16:08:28,408 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:28,408 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:28,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 16:08:28,409 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:28,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1860215596, now seen corresponding path program 1 times [2025-02-05 16:08:28,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:28,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265059352] [2025-02-05 16:08:28,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:28,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:28,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-05 16:08:28,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-05 16:08:28,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:28,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:28,645 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 16:08:28,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:28,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265059352] [2025-02-05 16:08:28,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265059352] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:28,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:28,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:28,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615971768] [2025-02-05 16:08:28,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:28,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:28,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:28,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:28,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:28,647 INFO L87 Difference]: Start difference. First operand 1197 states and 1851 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:29,405 INFO L93 Difference]: Finished difference Result 3339 states and 5230 transitions. [2025-02-05 16:08:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:29,406 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2025-02-05 16:08:29,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:29,418 INFO L225 Difference]: With dead ends: 3339 [2025-02-05 16:08:29,419 INFO L226 Difference]: Without dead ends: 2162 [2025-02-05 16:08:29,422 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 16:08:29,424 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 1229 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:29,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 2416 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 16:08:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2025-02-05 16:08:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2006. [2025-02-05 16:08:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1857 states have (on average 1.5487345180398493) internal successors, (2876), 1865 states have internal predecessors, (2876), 112 states have call successors, (112), 31 states have call predecessors, (112), 36 states have return successors, (126), 113 states have call predecessors, (126), 110 states have call successors, (126) [2025-02-05 16:08:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 3114 transitions. [2025-02-05 16:08:29,491 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 3114 transitions. Word has length 178 [2025-02-05 16:08:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:29,491 INFO L471 AbstractCegarLoop]: Abstraction has 2006 states and 3114 transitions. [2025-02-05 16:08:29,491 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 3114 transitions. [2025-02-05 16:08:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-05 16:08:29,493 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:29,493 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:29,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 16:08:29,494 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:29,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2129117171, now seen corresponding path program 1 times [2025-02-05 16:08:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:29,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930317137] [2025-02-05 16:08:29,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:29,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-05 16:08:29,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-05 16:08:29,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:29,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:29,637 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 16:08:29,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:29,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930317137] [2025-02-05 16:08:29,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930317137] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:29,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:29,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:29,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016348288] [2025-02-05 16:08:29,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:29,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:29,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:29,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:29,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:29,639 INFO L87 Difference]: Start difference. First operand 2006 states and 3114 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:30,322 INFO L93 Difference]: Finished difference Result 5950 states and 9391 transitions. [2025-02-05 16:08:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:30,322 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2025-02-05 16:08:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:30,337 INFO L225 Difference]: With dead ends: 5950 [2025-02-05 16:08:30,338 INFO L226 Difference]: Without dead ends: 3964 [2025-02-05 16:08:30,342 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 16:08:30,343 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 1191 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:30,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 3465 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2025-02-05 16:08:30,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 3765. [2025-02-05 16:08:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3494 states have (on average 1.566113337149399) internal successors, (5472), 3516 states have internal predecessors, (5472), 196 states have call successors, (196), 55 states have call predecessors, (196), 74 states have return successors, (258), 201 states have call predecessors, (258), 194 states have call successors, (258) [2025-02-05 16:08:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 5926 transitions. [2025-02-05 16:08:30,468 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 5926 transitions. Word has length 178 [2025-02-05 16:08:30,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:30,469 INFO L471 AbstractCegarLoop]: Abstraction has 3765 states and 5926 transitions. [2025-02-05 16:08:30,469 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 5926 transitions. [2025-02-05 16:08:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-05 16:08:30,472 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:30,472 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:30,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 16:08:30,472 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:30,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:30,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1426521332, now seen corresponding path program 1 times [2025-02-05 16:08:30,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:30,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799644860] [2025-02-05 16:08:30,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:30,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:30,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-05 16:08:30,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-05 16:08:30,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:30,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:30,598 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 16:08:30,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:30,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799644860] [2025-02-05 16:08:30,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799644860] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:30,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:30,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:30,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878422528] [2025-02-05 16:08:30,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:30,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:30,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:30,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:30,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:30,600 INFO L87 Difference]: Start difference. First operand 3765 states and 5926 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:31,385 INFO L93 Difference]: Finished difference Result 11717 states and 18845 transitions. [2025-02-05 16:08:31,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:31,386 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2025-02-05 16:08:31,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:31,417 INFO L225 Difference]: With dead ends: 11717 [2025-02-05 16:08:31,417 INFO L226 Difference]: Without dead ends: 7972 [2025-02-05 16:08:31,426 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 16:08:31,428 INFO L435 NwaCegarLoop]: 843 mSDtfsCounter, 1186 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:31,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 3453 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:31,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7972 states. [2025-02-05 16:08:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7972 to 7688. [2025-02-05 16:08:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 7155 states have (on average 1.595527603074773) internal successors, (11416), 7223 states have internal predecessors, (11416), 364 states have call successors, (364), 103 states have call predecessors, (364), 168 states have return successors, (618), 377 states have call predecessors, (618), 362 states have call successors, (618) [2025-02-05 16:08:31,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 12398 transitions. [2025-02-05 16:08:31,708 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 12398 transitions. Word has length 178 [2025-02-05 16:08:31,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:31,708 INFO L471 AbstractCegarLoop]: Abstraction has 7688 states and 12398 transitions. [2025-02-05 16:08:31,709 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 12398 transitions. [2025-02-05 16:08:31,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-05 16:08:31,713 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:31,713 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:31,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 16:08:31,713 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:31,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1921279021, now seen corresponding path program 1 times [2025-02-05 16:08:31,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:31,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430843583] [2025-02-05 16:08:31,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:31,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-05 16:08:31,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-05 16:08:31,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:31,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:31,834 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 16:08:31,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:31,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430843583] [2025-02-05 16:08:31,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430843583] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:31,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:31,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:31,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587059937] [2025-02-05 16:08:31,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:31,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:31,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:31,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:31,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:31,837 INFO L87 Difference]: Start difference. First operand 7688 states and 12398 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:32,857 INFO L93 Difference]: Finished difference Result 24812 states and 41127 transitions. [2025-02-05 16:08:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:32,858 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2025-02-05 16:08:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:32,929 INFO L225 Difference]: With dead ends: 24812 [2025-02-05 16:08:32,929 INFO L226 Difference]: Without dead ends: 17144 [2025-02-05 16:08:32,944 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 16:08:32,945 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 1181 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:32,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 3441 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17144 states. [2025-02-05 16:08:33,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17144 to 16695. [2025-02-05 16:08:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16695 states, 15584 states have (on average 1.6334702258726899) internal successors, (25456), 15798 states have internal predecessors, (25456), 700 states have call successors, (700), 199 states have call predecessors, (700), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2025-02-05 16:08:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16695 states to 16695 states and 27878 transitions. [2025-02-05 16:08:33,519 INFO L78 Accepts]: Start accepts. Automaton has 16695 states and 27878 transitions. Word has length 178 [2025-02-05 16:08:33,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:33,519 INFO L471 AbstractCegarLoop]: Abstraction has 16695 states and 27878 transitions. [2025-02-05 16:08:33,520 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:33,520 INFO L276 IsEmpty]: Start isEmpty. Operand 16695 states and 27878 transitions. [2025-02-05 16:08:33,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-05 16:08:33,527 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:33,527 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:33,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 16:08:33,527 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:33,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:33,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1197988588, now seen corresponding path program 1 times [2025-02-05 16:08:33,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:33,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089768709] [2025-02-05 16:08:33,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:33,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:33,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-05 16:08:33,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-05 16:08:33,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:33,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:33,679 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 16:08:33,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:33,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089768709] [2025-02-05 16:08:33,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089768709] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:33,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:33,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:33,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823502586] [2025-02-05 16:08:33,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:33,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:33,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:33,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:33,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:33,681 INFO L87 Difference]: Start difference. First operand 16695 states and 27878 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:34,907 INFO L93 Difference]: Finished difference Result 55471 states and 95877 transitions. [2025-02-05 16:08:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:34,907 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2025-02-05 16:08:34,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:35,042 INFO L225 Difference]: With dead ends: 55471 [2025-02-05 16:08:35,042 INFO L226 Difference]: Without dead ends: 38796 [2025-02-05 16:08:35,093 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 16:08:35,094 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 1176 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:35,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 3429 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38796 states. [2025-02-05 16:08:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38796 to 38030. [2025-02-05 16:08:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38030 states, 35601 states have (on average 1.676245049296368) internal successors, (59676), 36269 states have internal predecessors, (59676), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2025-02-05 16:08:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38030 states to 38030 states and 66514 transitions. [2025-02-05 16:08:36,243 INFO L78 Accepts]: Start accepts. Automaton has 38030 states and 66514 transitions. Word has length 178 [2025-02-05 16:08:36,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:36,244 INFO L471 AbstractCegarLoop]: Abstraction has 38030 states and 66514 transitions. [2025-02-05 16:08:36,244 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:36,245 INFO L276 IsEmpty]: Start isEmpty. Operand 38030 states and 66514 transitions. [2025-02-05 16:08:36,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-05 16:08:36,258 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:36,259 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:36,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 16:08:36,259 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:36,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:36,260 INFO L85 PathProgramCache]: Analyzing trace with hash 487911347, now seen corresponding path program 1 times [2025-02-05 16:08:36,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:36,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898621391] [2025-02-05 16:08:36,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:36,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:36,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-05 16:08:36,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-05 16:08:36,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:36,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:36,404 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 16:08:36,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:36,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898621391] [2025-02-05 16:08:36,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898621391] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:36,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:36,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:36,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255265896] [2025-02-05 16:08:36,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:36,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:36,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:36,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:36,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:36,407 INFO L87 Difference]: Start difference. First operand 38030 states and 66514 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:38,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:38,484 INFO L93 Difference]: Finished difference Result 129558 states and 236603 transitions. [2025-02-05 16:08:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:38,487 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2025-02-05 16:08:38,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:38,788 INFO L225 Difference]: With dead ends: 129558 [2025-02-05 16:08:38,790 INFO L226 Difference]: Without dead ends: 91548 [2025-02-05 16:08:38,891 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 16:08:38,892 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 1171 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:38,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 3417 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:38,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91548 states. [2025-02-05 16:08:41,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91548 to 90177. [2025-02-05 16:08:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90177 states, 84626 states have (on average 1.72027509276109) internal successors, (145580), 86688 states have internal predecessors, (145580), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 2834 states have return successors, (19098), 2841 states have call predecessors, (19098), 2714 states have call successors, (19098) [2025-02-05 16:08:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90177 states to 90177 states and 167394 transitions. [2025-02-05 16:08:41,679 INFO L78 Accepts]: Start accepts. Automaton has 90177 states and 167394 transitions. Word has length 178 [2025-02-05 16:08:41,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:41,682 INFO L471 AbstractCegarLoop]: Abstraction has 90177 states and 167394 transitions. [2025-02-05 16:08:41,682 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:41,682 INFO L276 IsEmpty]: Start isEmpty. Operand 90177 states and 167394 transitions. [2025-02-05 16:08:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-05 16:08:41,702 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:41,703 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:41,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 16:08:41,703 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:41,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash 680842548, now seen corresponding path program 1 times [2025-02-05 16:08:41,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:41,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144634406] [2025-02-05 16:08:41,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:41,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:41,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-05 16:08:41,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-05 16:08:41,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:41,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:42,198 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 16:08:42,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:42,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144634406] [2025-02-05 16:08:42,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144634406] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:42,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:42,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:42,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110043702] [2025-02-05 16:08:42,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:42,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:42,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:42,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:42,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:42,200 INFO L87 Difference]: Start difference. First operand 90177 states and 167394 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:47,027 INFO L93 Difference]: Finished difference Result 314121 states and 615625 transitions. [2025-02-05 16:08:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:47,027 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2025-02-05 16:08:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:47,858 INFO L225 Difference]: With dead ends: 314121 [2025-02-05 16:08:47,859 INFO L226 Difference]: Without dead ends: 223964 [2025-02-05 16:08:48,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:48,178 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 1166 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:48,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 3405 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 16:08:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223964 states. [2025-02-05 16:08:54,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223964 to 221444. [2025-02-05 16:08:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221444 states, 208191 states have (on average 1.762304806643899) internal successors, (366896), 214499 states have internal predecessors, (366896), 5404 states have call successors, (5404), 1543 states have call predecessors, (5404), 7848 states have return successors, (70938), 5657 states have call predecessors, (70938), 5402 states have call successors, (70938) [2025-02-05 16:08:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221444 states to 221444 states and 443238 transitions. [2025-02-05 16:08:56,281 INFO L78 Accepts]: Start accepts. Automaton has 221444 states and 443238 transitions. Word has length 178 [2025-02-05 16:08:56,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:08:56,281 INFO L471 AbstractCegarLoop]: Abstraction has 221444 states and 443238 transitions. [2025-02-05 16:08:56,282 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:56,282 INFO L276 IsEmpty]: Start isEmpty. Operand 221444 states and 443238 transitions. [2025-02-05 16:08:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-05 16:08:56,314 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:08:56,314 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:08:56,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 16:08:56,315 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:08:56,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:08:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash 548518803, now seen corresponding path program 1 times [2025-02-05 16:08:56,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:08:56,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844858736] [2025-02-05 16:08:56,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:08:56,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:08:56,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-05 16:08:56,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-05 16:08:56,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:08:56,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:08:56,408 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 16:08:56,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:08:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844858736] [2025-02-05 16:08:56,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844858736] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:08:56,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:08:56,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:08:56,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862284045] [2025-02-05 16:08:56,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:08:56,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:08:56,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:08:56,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:08:56,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:56,410 INFO L87 Difference]: Start difference. First operand 221444 states and 443238 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)