./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.03.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6efc92bef151ce13307933930fbf12d828dd2fc0ecd03ad5da23928a5efb5fb2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:23:02,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:23:02,518 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:23:02,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:23:02,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:23:02,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:23:02,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:23:02,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:23:02,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:23:02,560 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:23:02,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:23:02,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:23:02,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:23:02,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:23:02,564 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:23:02,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:23:02,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:23:02,565 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:23:02,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:23:02,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:23:02,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:23:02,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:23:02,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:23:02,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:23:02,567 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:23:02,568 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:23:02,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:23:02,568 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:23:02,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:23:02,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:23:02,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:23:02,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:23:02,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:23:02,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:23:02,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:23:02,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:23:02,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:23:02,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:23:02,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:23:02,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:23:02,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:23:02,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:23:02,573 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6efc92bef151ce13307933930fbf12d828dd2fc0ecd03ad5da23928a5efb5fb2 [2024-10-24 02:23:02,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:23:02,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:23:02,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:23:02,852 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:23:02,852 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:23:02,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.03.cil-2.c [2024-10-24 02:23:04,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:23:04,941 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:23:04,942 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.03.cil-2.c [2024-10-24 02:23:04,990 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557fb6931/26b9637ceb634dfbb1e6cbe893829632/FLAGfbdc826bb [2024-10-24 02:23:05,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557fb6931/26b9637ceb634dfbb1e6cbe893829632 [2024-10-24 02:23:05,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:23:05,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:23:05,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:23:05,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:23:05,013 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:23:05,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:05" (1/1) ... [2024-10-24 02:23:05,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9449b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:05, skipping insertion in model container [2024-10-24 02:23:05,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:05" (1/1) ... [2024-10-24 02:23:05,164 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:23:06,858 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.03.cil-2.c[377612,377625] [2024-10-24 02:23:06,886 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.03.cil-2.c[383339,383352] [2024-10-24 02:23:07,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:23:07,036 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:23:07,827 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.03.cil-2.c[377612,377625] [2024-10-24 02:23:07,834 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.03.cil-2.c[383339,383352] [2024-10-24 02:23:07,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:23:07,910 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:23:07,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07 WrapperNode [2024-10-24 02:23:07,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:23:07,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:23:07,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:23:07,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:23:07,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,410 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12693 [2024-10-24 02:23:08,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:23:08,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:23:08,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:23:08,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:23:08,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,557 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 02:23:08,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,917 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:23:08,972 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:23:08,972 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:23:08,973 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:23:08,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (1/1) ... [2024-10-24 02:23:08,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:23:08,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:23:09,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 02:23:09,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 02:23:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:23:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-24 02:23:09,100 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-24 02:23:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 02:23:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 02:23:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-24 02:23:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-24 02:23:09,103 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-24 02:23:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-24 02:23:09,103 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-24 02:23:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-24 02:23:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-24 02:23:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-24 02:23:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:23:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:23:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:23:09,278 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:23:09,280 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:23:16,720 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2024-10-24 02:23:16,721 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:23:16,831 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:23:16,831 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-24 02:23:16,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:16 BoogieIcfgContainer [2024-10-24 02:23:16,832 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:23:16,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:23:16,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:23:16,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:23:16,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:23:05" (1/3) ... [2024-10-24 02:23:16,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae373b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:16, skipping insertion in model container [2024-10-24 02:23:16,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:07" (2/3) ... [2024-10-24 02:23:16,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae373b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:16, skipping insertion in model container [2024-10-24 02:23:16,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:16" (3/3) ... [2024-10-24 02:23:16,845 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.03.cil-2.c [2024-10-24 02:23:16,862 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:23:16,863 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:23:16,972 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:23:16,978 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;@753a1b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:23:16,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:23:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 2264 states, 2238 states have (on average 1.8847184986595173) internal successors, (4218), 2241 states have internal predecessors, (4218), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-24 02:23:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 02:23:17,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:17,003 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:17,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:17,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1010118271, now seen corresponding path program 1 times [2024-10-24 02:23:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:17,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407703405] [2024-10-24 02:23:17,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:17,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:17,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:17,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:17,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:17,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:17,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:23:17,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:17,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407703405] [2024-10-24 02:23:17,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407703405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:17,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:23:17,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:23:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804055507] [2024-10-24 02:23:17,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:17,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:23:17,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:23:17,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:23:17,606 INFO L87 Difference]: Start difference. First operand has 2264 states, 2238 states have (on average 1.8847184986595173) internal successors, (4218), 2241 states have internal predecessors, (4218), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:18,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:18,802 INFO L93 Difference]: Finished difference Result 4732 states and 8845 transitions. [2024-10-24 02:23:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 02:23:18,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2024-10-24 02:23:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:18,839 INFO L225 Difference]: With dead ends: 4732 [2024-10-24 02:23:18,839 INFO L226 Difference]: Without dead ends: 2471 [2024-10-24 02:23:18,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:23:18,856 INFO L432 NwaCegarLoop]: 4074 mSDtfsCounter, 4459 mSDsluCounter, 12195 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4469 SdHoareTripleChecker+Valid, 16269 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:18,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4469 Valid, 16269 Invalid, 864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 02:23:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2024-10-24 02:23:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2392. [2024-10-24 02:23:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 2348 states have (on average 1.8373083475298126) internal successors, (4314), 2351 states have internal predecessors, (4314), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2024-10-24 02:23:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 4375 transitions. [2024-10-24 02:23:19,047 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 4375 transitions. Word has length 71 [2024-10-24 02:23:19,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:19,048 INFO L471 AbstractCegarLoop]: Abstraction has 2392 states and 4375 transitions. [2024-10-24 02:23:19,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 4375 transitions. [2024-10-24 02:23:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 02:23:19,054 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:19,055 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:19,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:23:19,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:19,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:19,056 INFO L85 PathProgramCache]: Analyzing trace with hash -308869883, now seen corresponding path program 1 times [2024-10-24 02:23:19,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:19,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099194468] [2024-10-24 02:23:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:19,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:19,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:19,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:19,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:19,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:19,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:23:19,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:19,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099194468] [2024-10-24 02:23:19,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099194468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:19,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:23:19,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:23:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096373467] [2024-10-24 02:23:19,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:19,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:23:19,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:19,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:23:19,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:19,408 INFO L87 Difference]: Start difference. First operand 2392 states and 4375 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:20,819 INFO L93 Difference]: Finished difference Result 2906 states and 5181 transitions. [2024-10-24 02:23:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:23:20,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2024-10-24 02:23:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:20,833 INFO L225 Difference]: With dead ends: 2906 [2024-10-24 02:23:20,834 INFO L226 Difference]: Without dead ends: 2644 [2024-10-24 02:23:20,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:23:20,837 INFO L432 NwaCegarLoop]: 4151 mSDtfsCounter, 4453 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4463 SdHoareTripleChecker+Valid, 20570 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:20,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4463 Valid, 20570 Invalid, 1329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 02:23:20,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2024-10-24 02:23:20,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2515. [2024-10-24 02:23:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 2452 states have (on average 1.8242251223491028) internal successors, (4473), 2456 states have internal predecessors, (4473), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2024-10-24 02:23:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 4560 transitions. [2024-10-24 02:23:20,928 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 4560 transitions. Word has length 71 [2024-10-24 02:23:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:20,928 INFO L471 AbstractCegarLoop]: Abstraction has 2515 states and 4560 transitions. [2024-10-24 02:23:20,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 4560 transitions. [2024-10-24 02:23:20,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 02:23:20,931 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:20,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:20,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:23:20,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:20,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:20,933 INFO L85 PathProgramCache]: Analyzing trace with hash 124859203, now seen corresponding path program 1 times [2024-10-24 02:23:20,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:20,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905316296] [2024-10-24 02:23:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:20,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:21,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:21,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:21,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:21,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:21,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:23:21,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:21,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905316296] [2024-10-24 02:23:21,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905316296] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:21,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:23:21,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:23:21,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442932821] [2024-10-24 02:23:21,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:21,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:23:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:21,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:23:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:21,138 INFO L87 Difference]: Start difference. First operand 2515 states and 4560 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:22,483 INFO L93 Difference]: Finished difference Result 3352 states and 5868 transitions. [2024-10-24 02:23:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:23:22,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2024-10-24 02:23:22,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:22,498 INFO L225 Difference]: With dead ends: 3352 [2024-10-24 02:23:22,499 INFO L226 Difference]: Without dead ends: 2967 [2024-10-24 02:23:22,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:23:22,504 INFO L432 NwaCegarLoop]: 4149 mSDtfsCounter, 4451 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 20568 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:22,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4461 Valid, 20568 Invalid, 1327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 02:23:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2024-10-24 02:23:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2762. [2024-10-24 02:23:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2762 states, 2661 states have (on average 1.8008267568583238) internal successors, (4792), 2667 states have internal predecessors, (4792), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2024-10-24 02:23:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4935 transitions. [2024-10-24 02:23:22,699 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4935 transitions. Word has length 71 [2024-10-24 02:23:22,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:22,700 INFO L471 AbstractCegarLoop]: Abstraction has 2762 states and 4935 transitions. [2024-10-24 02:23:22,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:22,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4935 transitions. [2024-10-24 02:23:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 02:23:22,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:22,705 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:22,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:23:22,706 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:22,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1385776453, now seen corresponding path program 1 times [2024-10-24 02:23:22,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:22,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949096934] [2024-10-24 02:23:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:22,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:22,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:22,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:22,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:22,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:22,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:23:22,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:22,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949096934] [2024-10-24 02:23:22,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949096934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:22,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:23:22,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:23:22,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888859020] [2024-10-24 02:23:22,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:22,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:23:22,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:22,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:23:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:22,857 INFO L87 Difference]: Start difference. First operand 2762 states and 4935 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:23,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:23,454 INFO L93 Difference]: Finished difference Result 3589 states and 6236 transitions. [2024-10-24 02:23:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:23:23,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2024-10-24 02:23:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:23,471 INFO L225 Difference]: With dead ends: 3589 [2024-10-24 02:23:23,472 INFO L226 Difference]: Without dead ends: 2957 [2024-10-24 02:23:23,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:23:23,482 INFO L432 NwaCegarLoop]: 4057 mSDtfsCounter, 4387 mSDsluCounter, 12099 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4398 SdHoareTripleChecker+Valid, 16156 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:23,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4398 Valid, 16156 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:23:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2024-10-24 02:23:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2762. [2024-10-24 02:23:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2762 states, 2661 states have (on average 1.7989477639984968) internal successors, (4787), 2667 states have internal predecessors, (4787), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2024-10-24 02:23:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4930 transitions. [2024-10-24 02:23:23,592 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4930 transitions. Word has length 71 [2024-10-24 02:23:23,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:23,592 INFO L471 AbstractCegarLoop]: Abstraction has 2762 states and 4930 transitions. [2024-10-24 02:23:23,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:23,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4930 transitions. [2024-10-24 02:23:23,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 02:23:23,594 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:23,594 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:23,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:23:23,594 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:23,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1426451203, now seen corresponding path program 1 times [2024-10-24 02:23:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:23,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573508256] [2024-10-24 02:23:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:23,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:23,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:23,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:23,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:23,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:23:23,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:23,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573508256] [2024-10-24 02:23:23,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573508256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:23,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:23:23,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:23:23,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616240012] [2024-10-24 02:23:23,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:23,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:23:23,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:23:23,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:23,777 INFO L87 Difference]: Start difference. First operand 2762 states and 4930 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:25,040 INFO L93 Difference]: Finished difference Result 4380 states and 7425 transitions. [2024-10-24 02:23:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:23:25,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2024-10-24 02:23:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:25,059 INFO L225 Difference]: With dead ends: 4380 [2024-10-24 02:23:25,059 INFO L226 Difference]: Without dead ends: 3748 [2024-10-24 02:23:25,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:23:25,063 INFO L432 NwaCegarLoop]: 4147 mSDtfsCounter, 4558 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4572 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:25,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4572 Valid, 20561 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 02:23:25,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2024-10-24 02:23:25,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3253. [2024-10-24 02:23:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 3080 states have (on average 1.7603896103896104) internal successors, (5422), 3090 states have internal predecessors, (5422), 109 states have call successors, (109), 54 states have call predecessors, (109), 62 states have return successors, (144), 116 states have call predecessors, (144), 109 states have call successors, (144) [2024-10-24 02:23:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 5675 transitions. [2024-10-24 02:23:25,361 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 5675 transitions. Word has length 71 [2024-10-24 02:23:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:25,361 INFO L471 AbstractCegarLoop]: Abstraction has 3253 states and 5675 transitions. [2024-10-24 02:23:25,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:25,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 5675 transitions. [2024-10-24 02:23:25,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 02:23:25,364 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:25,364 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:25,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:23:25,365 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:25,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:25,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1481730683, now seen corresponding path program 1 times [2024-10-24 02:23:25,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:25,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812539009] [2024-10-24 02:23:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:25,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:25,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:25,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:25,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:25,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:25,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:23:25,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:25,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812539009] [2024-10-24 02:23:25,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812539009] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:25,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:23:25,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:23:25,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983696831] [2024-10-24 02:23:25,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:25,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:23:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:23:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:25,510 INFO L87 Difference]: Start difference. First operand 3253 states and 5675 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:26,719 INFO L93 Difference]: Finished difference Result 6161 states and 10154 transitions. [2024-10-24 02:23:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:23:26,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2024-10-24 02:23:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:26,745 INFO L225 Difference]: With dead ends: 6161 [2024-10-24 02:23:26,746 INFO L226 Difference]: Without dead ends: 5038 [2024-10-24 02:23:26,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:23:26,754 INFO L432 NwaCegarLoop]: 4146 mSDtfsCounter, 4460 mSDsluCounter, 16411 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4469 SdHoareTripleChecker+Valid, 20557 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:26,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4469 Valid, 20557 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 02:23:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2024-10-24 02:23:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 4191. [2024-10-24 02:23:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3878 states have (on average 1.709128416709644) internal successors, (6628), 3896 states have internal predecessors, (6628), 193 states have call successors, (193), 102 states have call predecessors, (193), 118 states have return successors, (290), 208 states have call predecessors, (290), 193 states have call successors, (290) [2024-10-24 02:23:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 7111 transitions. [2024-10-24 02:23:26,941 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 7111 transitions. Word has length 71 [2024-10-24 02:23:26,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:26,941 INFO L471 AbstractCegarLoop]: Abstraction has 4191 states and 7111 transitions. [2024-10-24 02:23:26,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 7111 transitions. [2024-10-24 02:23:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 02:23:26,945 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:26,945 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:26,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:23:26,945 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:26,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:26,945 INFO L85 PathProgramCache]: Analyzing trace with hash -605711677, now seen corresponding path program 1 times [2024-10-24 02:23:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:26,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413785370] [2024-10-24 02:23:26,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:26,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:27,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:27,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:27,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:27,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:27,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:23:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:27,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413785370] [2024-10-24 02:23:27,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413785370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:27,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:23:27,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:23:27,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620481143] [2024-10-24 02:23:27,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:27,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:23:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:27,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:23:27,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:27,091 INFO L87 Difference]: Start difference. First operand 4191 states and 7111 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:28,389 INFO L93 Difference]: Finished difference Result 9281 states and 14962 transitions. [2024-10-24 02:23:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:23:28,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2024-10-24 02:23:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:28,426 INFO L225 Difference]: With dead ends: 9281 [2024-10-24 02:23:28,426 INFO L226 Difference]: Without dead ends: 7220 [2024-10-24 02:23:28,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:23:28,437 INFO L432 NwaCegarLoop]: 4147 mSDtfsCounter, 4448 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4462 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:28,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4462 Valid, 20561 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:23:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7220 states. [2024-10-24 02:23:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7220 to 6122. [2024-10-24 02:23:28,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 5537 states have (on average 1.6525194148455842) internal successors, (9150), 5571 states have internal predecessors, (9150), 353 states have call successors, (353), 198 states have call predecessors, (353), 230 states have return successors, (628), 384 states have call predecessors, (628), 353 states have call successors, (628) [2024-10-24 02:23:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 10131 transitions. [2024-10-24 02:23:28,778 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 10131 transitions. Word has length 71 [2024-10-24 02:23:28,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:28,779 INFO L471 AbstractCegarLoop]: Abstraction has 6122 states and 10131 transitions. [2024-10-24 02:23:28,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 10131 transitions. [2024-10-24 02:23:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 02:23:28,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:28,786 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:28,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 02:23:28,787 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:28,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:28,787 INFO L85 PathProgramCache]: Analyzing trace with hash 932628353, now seen corresponding path program 1 times [2024-10-24 02:23:28,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:28,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515696795] [2024-10-24 02:23:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:28,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:28,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:28,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:28,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:28,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:28,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:23:28,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:28,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515696795] [2024-10-24 02:23:28,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515696795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:28,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:23:28,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:23:28,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995149491] [2024-10-24 02:23:28,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:28,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:23:28,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:28,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:23:28,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:23:28,903 INFO L87 Difference]: Start difference. First operand 6122 states and 10131 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:30,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:30,603 INFO L93 Difference]: Finished difference Result 13461 states and 21515 transitions. [2024-10-24 02:23:30,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 02:23:30,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2024-10-24 02:23:30,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:30,646 INFO L225 Difference]: With dead ends: 13461 [2024-10-24 02:23:30,647 INFO L226 Difference]: Without dead ends: 9470 [2024-10-24 02:23:30,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-24 02:23:30,668 INFO L432 NwaCegarLoop]: 4178 mSDtfsCounter, 4606 mSDsluCounter, 12239 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 16417 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:30,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4633 Valid, 16417 Invalid, 1099 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 02:23:30,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2024-10-24 02:23:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 8136. [2024-10-24 02:23:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8136 states, 7244 states have (on average 1.6114025400331309) internal successors, (11673), 7311 states have internal predecessors, (11673), 542 states have call successors, (542), 300 states have call predecessors, (542), 348 states have return successors, (899), 556 states have call predecessors, (899), 542 states have call successors, (899) [2024-10-24 02:23:31,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8136 states to 8136 states and 13114 transitions. [2024-10-24 02:23:31,292 INFO L78 Accepts]: Start accepts. Automaton has 8136 states and 13114 transitions. Word has length 71 [2024-10-24 02:23:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:31,293 INFO L471 AbstractCegarLoop]: Abstraction has 8136 states and 13114 transitions. [2024-10-24 02:23:31,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:23:31,293 INFO L276 IsEmpty]: Start isEmpty. Operand 8136 states and 13114 transitions. [2024-10-24 02:23:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-24 02:23:31,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:31,311 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:31,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:23:31,312 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:31,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:31,312 INFO L85 PathProgramCache]: Analyzing trace with hash 919759115, now seen corresponding path program 1 times [2024-10-24 02:23:31,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:31,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113806593] [2024-10-24 02:23:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:31,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:31,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:31,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:31,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:31,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:31,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:31,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 02:23:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:31,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:23:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:31,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 02:23:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 02:23:31,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:31,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113806593] [2024-10-24 02:23:31,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113806593] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:23:31,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698190527] [2024-10-24 02:23:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:31,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:23:31,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:23:31,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:23:31,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 02:23:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:31,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:23:31,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:23:31,687 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 02:23:31,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:23:31,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698190527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:31,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:23:31,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:23:31,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893648102] [2024-10-24 02:23:31,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:31,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:23:31,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:31,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:23:31,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:31,690 INFO L87 Difference]: Start difference. First operand 8136 states and 13114 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 02:23:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:32,475 INFO L93 Difference]: Finished difference Result 19993 states and 31344 transitions. [2024-10-24 02:23:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:23:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2024-10-24 02:23:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:32,535 INFO L225 Difference]: With dead ends: 19993 [2024-10-24 02:23:32,536 INFO L226 Difference]: Without dead ends: 13988 [2024-10-24 02:23:32,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:32,561 INFO L432 NwaCegarLoop]: 4149 mSDtfsCounter, 4122 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:32,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4122 Valid, 4322 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:23:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13988 states. [2024-10-24 02:23:33,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13988 to 13936. [2024-10-24 02:23:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13936 states, 12184 states have (on average 1.5635259356533158) internal successors, (19050), 12316 states have internal predecessors, (19050), 1054 states have call successors, (1054), 600 states have call predecessors, (1054), 696 states have return successors, (1737), 1051 states have call predecessors, (1737), 1054 states have call successors, (1737) [2024-10-24 02:23:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13936 states to 13936 states and 21841 transitions. [2024-10-24 02:23:33,425 INFO L78 Accepts]: Start accepts. Automaton has 13936 states and 21841 transitions. Word has length 115 [2024-10-24 02:23:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:33,425 INFO L471 AbstractCegarLoop]: Abstraction has 13936 states and 21841 transitions. [2024-10-24 02:23:33,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 02:23:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 13936 states and 21841 transitions. [2024-10-24 02:23:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-24 02:23:33,450 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:33,451 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:33,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 02:23:33,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:23:33,656 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:33,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:33,657 INFO L85 PathProgramCache]: Analyzing trace with hash 690437961, now seen corresponding path program 1 times [2024-10-24 02:23:33,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:33,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855222712] [2024-10-24 02:23:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:33,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:33,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:33,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:33,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:33,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:33,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:33,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 02:23:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:33,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:23:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:33,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 02:23:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 02:23:33,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:33,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855222712] [2024-10-24 02:23:33,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855222712] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:23:33,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561937333] [2024-10-24 02:23:33,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:33,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:23:33,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:23:33,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:23:33,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 02:23:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:33,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:23:33,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:23:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-24 02:23:33,937 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:23:33,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561937333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:33,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:23:33,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:23:33,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922760280] [2024-10-24 02:23:33,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:33,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:23:33,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:33,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:23:33,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:33,940 INFO L87 Difference]: Start difference. First operand 13936 states and 21841 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 02:23:35,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:35,146 INFO L93 Difference]: Finished difference Result 37241 states and 57483 transitions. [2024-10-24 02:23:35,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:23:35,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2024-10-24 02:23:35,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:35,248 INFO L225 Difference]: With dead ends: 37241 [2024-10-24 02:23:35,248 INFO L226 Difference]: Without dead ends: 25436 [2024-10-24 02:23:35,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:35,291 INFO L432 NwaCegarLoop]: 4149 mSDtfsCounter, 4127 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4127 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:35,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4127 Valid, 4322 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:23:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25436 states. [2024-10-24 02:23:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25436 to 25334. [2024-10-24 02:23:36,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25334 states, 21888 states have (on average 1.5295138888888888) internal successors, (33478), 22150 states have internal predecessors, (33478), 2052 states have call successors, (2052), 1200 states have call predecessors, (2052), 1392 states have return successors, (3387), 2015 states have call predecessors, (3387), 2052 states have call successors, (3387) [2024-10-24 02:23:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25334 states to 25334 states and 38917 transitions. [2024-10-24 02:23:36,755 INFO L78 Accepts]: Start accepts. Automaton has 25334 states and 38917 transitions. Word has length 115 [2024-10-24 02:23:36,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:36,756 INFO L471 AbstractCegarLoop]: Abstraction has 25334 states and 38917 transitions. [2024-10-24 02:23:36,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 02:23:36,757 INFO L276 IsEmpty]: Start isEmpty. Operand 25334 states and 38917 transitions. [2024-10-24 02:23:36,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-24 02:23:36,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:36,807 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:36,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 02:23:37,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 02:23:37,009 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:37,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:37,010 INFO L85 PathProgramCache]: Analyzing trace with hash 573874123, now seen corresponding path program 1 times [2024-10-24 02:23:37,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:37,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39615734] [2024-10-24 02:23:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:37,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:37,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:37,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:37,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:37,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:37,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:37,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 02:23:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:37,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:23:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:37,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 02:23:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 02:23:37,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:37,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39615734] [2024-10-24 02:23:37,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39615734] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:23:37,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619554560] [2024-10-24 02:23:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:37,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:23:37,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:23:37,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:23:37,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 02:23:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:37,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:23:37,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:23:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 02:23:37,335 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:23:37,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619554560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:37,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:23:37,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:23:37,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396633569] [2024-10-24 02:23:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:37,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:23:37,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:23:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:37,339 INFO L87 Difference]: Start difference. First operand 25334 states and 38917 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 02:23:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:39,451 INFO L93 Difference]: Finished difference Result 70731 states and 108607 transitions. [2024-10-24 02:23:39,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:23:39,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2024-10-24 02:23:39,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:39,678 INFO L225 Difference]: With dead ends: 70731 [2024-10-24 02:23:39,679 INFO L226 Difference]: Without dead ends: 47529 [2024-10-24 02:23:39,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:39,741 INFO L432 NwaCegarLoop]: 4325 mSDtfsCounter, 182 mSDsluCounter, 4149 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 8474 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:39,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 8474 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:23:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47529 states. [2024-10-24 02:23:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47529 to 47529. [2024-10-24 02:23:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47529 states, 40776 states have (on average 1.5053217578968021) internal successors, (61381), 41231 states have internal predecessors, (61381), 3967 states have call successors, (3967), 2400 states have call predecessors, (3967), 2784 states have return successors, (7350), 3961 states have call predecessors, (7350), 3967 states have call successors, (7350) [2024-10-24 02:23:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47529 states to 47529 states and 72698 transitions. [2024-10-24 02:23:43,023 INFO L78 Accepts]: Start accepts. Automaton has 47529 states and 72698 transitions. Word has length 115 [2024-10-24 02:23:43,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:43,024 INFO L471 AbstractCegarLoop]: Abstraction has 47529 states and 72698 transitions. [2024-10-24 02:23:43,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 02:23:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 47529 states and 72698 transitions. [2024-10-24 02:23:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-24 02:23:43,142 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:43,143 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:43,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 02:23:43,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:23:43,344 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:43,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:43,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1434672612, now seen corresponding path program 1 times [2024-10-24 02:23:43,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:43,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798911980] [2024-10-24 02:23:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:43,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 02:23:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:23:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 02:23:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:23:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-24 02:23:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 02:23:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:43,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798911980] [2024-10-24 02:23:43,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798911980] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:23:43,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57710880] [2024-10-24 02:23:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:43,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:23:43,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:23:43,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:23:43,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 02:23:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:43,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:23:43,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:23:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 02:23:44,022 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:23:44,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57710880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:44,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:23:44,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:23:44,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631265001] [2024-10-24 02:23:44,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:44,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:23:44,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:44,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:23:44,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:44,026 INFO L87 Difference]: Start difference. First operand 47529 states and 72698 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 02:23:48,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:23:48,245 INFO L93 Difference]: Finished difference Result 136273 states and 208325 transitions. [2024-10-24 02:23:48,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:23:48,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 148 [2024-10-24 02:23:48,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:23:48,944 INFO L225 Difference]: With dead ends: 136273 [2024-10-24 02:23:48,944 INFO L226 Difference]: Without dead ends: 90881 [2024-10-24 02:23:49,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:49,076 INFO L432 NwaCegarLoop]: 4158 mSDtfsCounter, 4081 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4081 SdHoareTripleChecker+Valid, 4331 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:23:49,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4081 Valid, 4331 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:23:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90881 states. [2024-10-24 02:23:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90881 to 90479. [2024-10-24 02:23:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90479 states, 77674 states have (on average 1.4913484563689265) internal successors, (115839), 78581 states have internal predecessors, (115839), 7381 states have call successors, (7381), 4654 states have call predecessors, (7381), 5422 states have return successors, (13774), 7307 states have call predecessors, (13774), 7381 states have call successors, (13774) [2024-10-24 02:23:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90479 states to 90479 states and 136994 transitions. [2024-10-24 02:23:55,290 INFO L78 Accepts]: Start accepts. Automaton has 90479 states and 136994 transitions. Word has length 148 [2024-10-24 02:23:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:23:55,291 INFO L471 AbstractCegarLoop]: Abstraction has 90479 states and 136994 transitions. [2024-10-24 02:23:55,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 02:23:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 90479 states and 136994 transitions. [2024-10-24 02:23:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-24 02:23:55,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:23:55,506 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:23:55,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 02:23:55,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:23:55,707 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:23:55,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:23:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1063188102, now seen corresponding path program 1 times [2024-10-24 02:23:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:23:55,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756082098] [2024-10-24 02:23:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:55,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:23:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:23:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 02:23:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:23:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 02:23:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 02:23:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 02:23:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 02:23:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:23:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-24 02:23:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:23:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-24 02:23:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-24 02:23:55,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:23:55,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756082098] [2024-10-24 02:23:55,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756082098] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:23:55,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834183389] [2024-10-24 02:23:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:23:55,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:23:55,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:23:55,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:23:55,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 02:23:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:23:55,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:23:55,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:23:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 02:23:56,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:23:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834183389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:23:56,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:23:56,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:23:56,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069611837] [2024-10-24 02:23:56,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:23:56,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:23:56,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:23:56,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:23:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:23:56,080 INFO L87 Difference]: Start difference. First operand 90479 states and 136994 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)